Annotation of loncom/publisher/rawkey.txt, revision 1.1

1.1     ! www         1: 
        !             2: aint
        !             3: 
        !             4: Test,sequence
        !             5: algebra,math
        !             6: 
        !             7: 
        !             8: 
        !             9: unit,si,units
        !            10: scales,time,interval,measurements
        !            11: sigfigs,digits,digit,significant
        !            12: figures,digits,significant
        !            13: number,notation,digits,mantissa,superscripts,digit,scientific,significant,numbers
        !            14: 
        !            15: 
        !            16: 
        !            17: 
        !            18: 
        !            19: 
        !            20: calorie,btu,heat,btuhour,kcal,joule,cal,kilocalorie
        !            21: equivalent,heat,mechanical,cal
        !            22: heat,energy,matter,temperature
        !            23: 
        !            24: 
        !            25: 
        !            26: 
        !            27: 
        !            28: 
        !            29: 
        !            30: 
        !            31: 
        !            32: 
        !            33: 
        !            34: 
        !            35: 
        !            36: 
        !            37: 
        !            38: 
        !            39: differentiation,tangent,differential,derivative,calculus
        !            40: 
        !            41: 
        !            42: micro,pico,hecto,centi,mega,tera,deca,yocto,zepto,deci,nano,yotta,giga,peta,kilo,milli,atto,zetta,femto
        !            43: 
        !            44: integral,integration,integrals,functions,derivative,calculus
        !            45: 
        !            46: 
        !            47: kinematics,motion,kinematical,dimension,motions,physics,dynamics
        !            48: instantaneous,acceleration,average,velocity
        !            49: speed,direction,acceleration,average,physics,velocity
        !            50: acceleration,time,physics,velocity,kinematic
        !            51: 
        !            52: 
        !            53: 
        !            54: components,vector,angle,coordinate,coordinates,orthogonal
        !            55: direction,vector,addition
        !            56: subtracted,subtraction,graphical,vector,addition,vectors
        !            57: direction,components,vector,trajectory,projectile
        !            58: angle,speed,acceleration,velocity
        !            59: 
        !            60: 
        !            61: 
        !            62: trigonometry,diagram,body,frictionless,diagrams,trig,free,acceleration,mass,pulley,inclined,massless,plane
        !            63: 
        !            64: equilibrium,acceleration,forces,static,statics,balanced
        !            65: direction,forces,directions,statics,tension
        !            66: acceleration,gravitational,friction,pulley,atwood,force
        !            67: applet,atwood
        !            68: work,gravity,force,applet,kinetic,coefficient,friction
        !            69: 
        !            70: 
        !            71: energy,unit,work,joule,dynamics,kinematics,kinetic,units
        !            72: work,path,force,pathindependent
        !            73: kg,kinematics,mass,work,gravity,displacement,force
        !            74: equilibrium,forces,distance,hookes,work,force,compressed,average,law,spring,units
        !            75: 
        !            76: equilibrium,stretched,stretches,work,gravity,force,mass,position,pulled,spring
        !            77: 
        !            78: kinetic,pendulum,energy,height,speed,conservation,potential
        !            79: trajectory,energy,speed,kinetic,friction,potential
        !            80: frictional,forces,energy,energies,loss,nonconservative,mechanical,slope,fractional,kinetic,friction,potential
        !            81: 
        !            82: time,horsepower,work,watt,rate,power
        !            83: energy,work,efficiency,output,power,input
        !            84: energy,gravitational,work,efficiency,kinetic,power,conservation,potential,summary
        !            85: 
        !            86: 
        !            87: 
        !            88: masses,momentum,energy,newtons,force,relation,kinetic,mass,external
        !            89: momentum,impulse,force,impact
        !            90: colliding,simulation,dimension,elasticity,collisions,applet,kinetic,simulates,elastic,inelastic,collision
        !            91: 
        !            92: center,forces,distance,mass
        !            93: centerofmass,center,equilibrium,fosbury,height,suspension,particles,potential,suspending
        !            94: 
        !            95: center,system,momentum,energy,force,dimensions,accelerate,collisions,kinetic,mass,elastic,inelastic,collision,velocity
        !            96: 
        !            97: 
        !            98: 
        !            99: 
        !           100: circle,moon,revolution,earth,rotations,rotates,siderian,revolves,solar,side,rotation,sun
        !           101: 
        !           102: arc,measures,length,angular,radian,rad,radius,radians
        !           103: center,ac,acceleration,centripetal,uniform
        !           104: gravitational,gravity,acceleration,earth,gravitation,gr,weight
        !           105: earth,mass,sun
        !           106: 
        !           107: 
        !           108: 
        !           109: slide,angular,rotational,ra,acceleration,slipping,rotates,rotating,wheel,slides,rolling,rotate
        !           110: 
        !           111: angular,torque,counterclockwise,force,righthandrule,clockwise,acceleration,inertia,cross
        !           112: 
        !           113: equilibrium,angular
        !           114: shape,angular,torque,arm,inertia,rotating
        !           115: parallel,axis,theorem
        !           116: gravity,rolls,sphere,inclined,inclines,spheres,plane,rolling,roll,incline
        !           117: 
        !           118: 
        !           119: youngs,shearing,stress,shear,solids
        !           120: faradays,metallic,generator,demonstration,metal,shielding,gauss,lightning,voltage,sparks,video,graaff,cage
        !           121: 
        !           122: 
        !           123: lightning,voltage,clip,discharge,charges,video,insulator,potential
        !           124: 
        !           125: Charge,Voltage,Electrostatics
        !           126: charge,electrostatic,charging,atoms,electrons,atom,electron
        !           127: repulsion,charge,identifying,detecting,electric,charges,electroscope,light,bodies,electroscopes
        !           128: 
        !           129: protons,electrostatic,force,electric,nucleons,nuclear
        !           130: masses,forces,protons,coulomb,gravitational,gravity,newtons,force,electrons,gravitation,mass
        !           131: 
        !           132: coulombs,vacuum,coulomb,fields,permittivity,atoms,force,electrons,charges,medium
        !           133: 
        !           134: coulomb,permittivity,dielectric,medium
        !           135: vacuum,ion,coulomb,negatively,permittivity,force,electrolyte,charged,vaccum
        !           136: positive,forces,charge,coulomb,force,charges
        !           137: beams,deflector,television,field,charge,force,deflected,electric,application,charges,deflect,beam,phone,electron
        !           138: 
        !           139: charge,force,electric,charges,electron
        !           140: field,fields,point,magnitude,charges
        !           141: field,fields,force,electric
        !           142: field,force,electric,perpendicular
        !           143: field,charge,coulomb,conducting,equipotential,charged,charges,potential
        !           144: masses,coulombs,unit,charge,coulomb,gravity,pith,force,charges,mass,microcoulomb,weight,units
        !           145: 
        !           146: equilibrium,forces,force,vector
        !           147: vacuum,charge,coulomb,force,magnitude,charges,orbit,gold,electron,nucleus
        !           148: vacuum,coulomb,force,charges
        !           149: coulombs,charges,forces,distance,charge,particles,force
        !           150: coulombs,charge,coulomb,force,electrons,charges,electron,transfer
        !           151: 
        !           152: 
        !           153: charge,inductance,parallel,symbol,electrostatic,circuits,circuit,symbols,ground,voltage,wire,switch,charges,potentials,wires,battery,potential,capacitor,coil,resistance,alternating,resistor
        !           154: 
        !           155: spherically,capacitance,field,charge,coulomb,pe,electrostatic,permittivity,spherical,conductor,sphere,isolated,potential,capacitor
        !           156: 
        !           157: polar,dielectrics,positive,dipoles,polarization,field,charge,molecule,changing,molecules,alignment,nonpolar,electric,thermal,dipole,charges,negative,align,density,dielectric,capacitor,flux
        !           158: 
        !           159: capacitors,insulated,positive,energy,capacitance,polarization,field,charge,nc,plate,force,plates,electric,charged,charges,separation,dielectric,battery,potential,capacitor
        !           160: 
        !           161: capacitors,energy,capacitance,charge,voltage,dielectric,battery,capacitor,connect
        !           162: 
        !           163: capacitors,charge,spherical,voltage,radius,cr,sphere,microcoulomb
        !           164: 
        !           165: 
        !           166: parallel,series,resistors,resistances,resistance
        !           167: voltmeter,voltage,galvanometer,resistance
        !           168: dissipated,resistivity,ohms,voltmeter,ammeter,law,laws,ampere,discharging,parallel,battery,capacitor,temperature,series,resistors,voltage,resistor
        !           169: 
        !           170: heat,energy,resistors,voltage,electric,ohms,power,volts,coil,resistance,resistor
        !           171: 
        !           172: ammeters,parallel,resistors,shunt,ohm,rs,ohms,galvanometer,ammeter,galvonometer,potential,resistance,resistor
        !           173: 
        !           174: 
        !           175: 
        !           176: magnet,field,charge,fields,electromagnets,poles,monopoles,north,electric,pole,attract,charges,repulsive,magnets,magnetic,attractive
        !           177: 
        !           178: angle,product,field,force,direction,vectors,vector,magnetic,perpendicular,cross,lorentz
        !           179: 
        !           180: charge,direction,charges,pointing,force,vectors
        !           181: magnet,field,poles,lines,pole,magnetic
        !           182: field,currents,force,drift,vector,charges,magnetic,lorentz,velocity
        !           183: forces,force,directions,magnitude,direction
        !           184: forces,field,charge,hall,force,electrons,voltage,electric,charges,magnetic,potential,lorentz,electron
        !           185: 
        !           186: force,magnitude,charged,magnetic,perpendicular,particle,coil,velocity
        !           187: amperes,field,charge,toroid,torque,force,repulsive,magnetic,cyclotron,coil,frequency,solenoid,magnetism
        !           188: 
        !           189: force,magnitude
        !           190: differentiation,derivations,primer,formulas,integration,appendix,calculus
        !           191: 
        !           192: magnet,electromotive,faradays,force,wire,electric,emf,induced,magnetic,potential,faraday
        !           193: 
        !           194: field,integral,integration,permittivity,monopoles,gauss,electric,free,vector,area,magnetic,flux,velocity,magnetism
        !           195: 
        !           196: circular,field,magnetic,flux,coil
        !           197: lenzs,field,electromotive,work,faradays,force,voltage,emf,da,area,potential,coil,velocity
        !           198: 
        !           199: coupled,oscillators,faradays,voltage,applet,ts,magnets,lenz,law,magnetic,flux,coil,oscillations,loop
        !           200: 
        !           201: field,faradays,motional,voltage,wire,induced,area,magnetic,coil,velocity
        !           202: induction,output,magnetic,fields,information,storage,induce,electromagnet,magnetization,ferromagnetic,translated,magnetized,voltage,magnetizes
        !           203: 
        !           204: field,work,faradays,powers,rotational,voltage,emf,induced,magnets,rotated,magnetic,power,rotating,velocity,rotate
        !           205: 
        !           206: emf,rotates,magnetic,angular,rotating,coil,rotational,velocity,voltage,frequency
        !           207: 
        !           208: induced,field,magnetic,inductance,faradays,flux,coil,henry
        !           209: field,mutual,inductance,flow,magnetic,flux,solenoid
        !           210: lenzs,coils,amperes,inductance,faradays,induce,circuit,voltage,selfinductance,emf,induced,solenoids,magnetic,flux,coil
        !           211: 
        !           212: selfinductance,inductance,flux,solenoid
        !           213: coils,ls,toroids,inductance,toroid,circuit,selfinductance,solenoids,coil,resistance,solenoid
        !           214: 
        !           215: energy,field,inductance,circuit,voltage,kirchhoffs,magnetic,inductor,potential,resistance
        !           216: 
        !           217: energy,inductance,stored,solenoid
        !           218: induction,coils,energy,field,inductance,induce,electricity,emf,induced,magnetic,rotation,coil,loop,solenoid
        !           219: 
        !           220: measuring,magnetic,surface,flux
        !           221: lenzs,angle,field,faradays,potental,counterclockwise,clockwise,magnitude,vector,magnetic,potential,coil
        !           222: 
        !           223: induction,field,emf,induced,magnetic,solenoid
        !           224: difference,induction,angle,wingspan,wing,voltage,induced,magnetic,rectangle,potential
        !           225: 
        !           226: large,energy,inductor,inductance
        !           227: lenzs,field,faradays,voltage,induced,magnetic,potential
        !           228: induced,field,magnetic,mutual,inductance,faradays,voltage,solenoid
        !           229: 
        !           230: frequencies,resonant,capacitance,inductance,resonance,circuits,circuit,voltage,capacitive,impedance,power,capacitor,resistance,resistor
        !           231: 
        !           232: circuits,circuit,voltage,rc,transformer,inductor,frequency
        !           233: decays,circuit,voltage,ohms,tt,battery,exponentially
        !           234: voltage
        !           235: ac,transformers,transformer,volts
        !           236: 
        !           237: 
        !           238: 
        !           239: 
        !           240: reflecting,mirror,reflection,reflected,light,surface,mirrors
        !           241: trigonometry,snells,speed,refraction,incident,rays
        !           242: snells,wavelength,index,refraction,light,media,medium,frequency
        !           243: angle,wavelength,rainbows,incoming,dispersion,wavelengths,droplets,angles,reflection,prism,refraction,deflection,deflected,reflected,sunlight,prisms,medium,frequency
        !           244: 
        !           245: snells,angle,optics,incoming,index,angles,fiber,reflection,refraction,refracted,ray,reflected,light,optically,surface,rays
        !           246: 
        !           247: angle,reflection,reflected,video,internal
        !           248: tracing,virtual,eye,mirror,reflection,ray,reflected,light,mirrors,images,image,plane,observer,rays
        !           249: 
        !           250: reflect,curved,mirror,reflection,spherical,ray,reflected,concave,light,surface,mirrors,curvature
        !           251: 
        !           252: virtual,eye,mirror,ray,reflected,concave,light,image,enlarged,magnification,rays
        !           253: 
        !           254: length,mirror,focal,inverted,concave,curvature,image,magnification
        !           255: positive,erect,virtual,eyes,eye,mirror,inverted,images,curvature,image,enlarged,magnification
        !           256: 
        !           257: erect,virtual,mirror,ray,concave,images,image
        !           258: distance,mirror,spherical,concave,lens,projector,light,lenses,convex
        !           259: 
        !           260: 
        !           261: 
        !           262: intermediate,virtual,focal,inverted,point,lens,lenses,image,rays
        !           263: magnifications,lens,combinations,image,magnification
        !           264: intermediate,diverging,mirror,lens,image
        !           265: retina,pupil,eye,refraction,iris,cornea,lens,curvature,optical
        !           266: retina,eye,mirror,lens,lenses,refractive
        !           267: farsightedness,retina,eye,eyeball,hypermetropia,lens,lenses,prebyopia,corrections,blurred
        !           268: 
        !           269: telescope,telescopes,microscope,eyes,eye,microscopes,eyepiece,image,magnification
        !           270: 
        !           271: eye,magnification
        !           272: aperture,cameras,reflector,slr,exposure,eye,mirror,focal,prism,eyepiece,lens,shutter,light,camera,lenses,image,film,optical,viewfinding
        !           273: 
        !           274: microscope,magnifications,ocular,eyepiece,magnifying,lens,lenses,image,magnification,glass
        !           275: 
        !           276: barrel,microscope,focal,eyepiece,magnification
        !           277: lengths,length,telescope,eye,infinity,mirror,focal,magnifier,magnifies,eyepiece,image,aberrations,magnification
        !           278: 
        !           279: length,telescope,focal,eyepiece,magnification
        !           280: telescope,microscope,prescription,lens,optical,magnification
        !           281: diopter,farsighted,diopters,mirror,lens,lenses,nearpoint
        !           282: glasses,length,nearsighted,eye,infinity,focal,farpoint,correction,lens,lenses,corrective
        !           283: 
        !           284: length,eye,focal,magnifying,nearpoint,magnification,glass
        !           285: barrel,microscope,microscopes,diopters,focal,ocular,eyepiece,magnification
        !           286: length,telescope,mirror,focal,concave,eyepiece,curvature,magnification
        !           287: slit,pattern,applet,diffraction,color
        !           288: 
        !           289: slit,applet,diffraction,doubleslit,wavelength
        !           290: 
        !           291: 
        !           292: 
        !           293: 
        !           294: 
        !           295: 
        !           296: star,wavelength,temperature,blackbody,surface
        !           297: 
        !           298: 
        !           299: 
        !           300: 
        !           301: 
        !           302: 
        !           303: 
        !           304: 
        !           305: 
        !           306: 
        !           307: 
        !           308: 
        !           309: 
        !           310: 
        !           311: 
        !           312: 
        !           313: element,masses,atom,stable,nucleons,energy,mass,isotones,protons,atomic,neutrons,proton,neutron,femtometer,einsteins,isotopes,nuclei,nucleus
        !           314: 
        !           315: nucleon,forces,nucleons,energy,protons,electromagnetic,nuclear,neutrons,particle,particles,force,weight,binding,nucleus
        !           316: 
        !           317: masses,atom,saturation,nucleon,hydrogen,mass,protons,carbon,fission,repulsion,nuclear,neutrons,proton,neutron,electrically,neutral,excess,force,stability,electron,nuclei,nucleus
        !           318: 
        !           319: penetrate,penetration,photons,radiation,momentum,beta,alpha,radioactivity,emission,particles,helium,nuclei,penetrating,exponentially,electrons,rays,gamma,spontaneously,decay
        !           320: 
        !           321: masses,detectors,nucleons,kinetic,energy,mass,protons,americium,energies,particle,conservation,particles,excitation,nuclei,isotope,nucleus,decay
        !           322: 
        !           323: antiparticle,mev,momentum,beta,energy,capture,decays,antielectron,energies,antineutrino,emission,neutron,nucleons,mass,antilepton,masselectron,positron,leptons,particles,lepton,electron,radioactive,neutrino,nucleus,decay
        !           324: 
        !           325: photons,discrete,mev,line,energy,protons,decays,energies,states,lines,nuclei,ray,electrons,balmer,transition,atom,state,nucleon,hydrogen,nucleons,ev,spectral,nuclear,light,photon,neutrons,levels,radioactive,emitted,transitions,nucleus,rays,gamma,decay
        !           326: 
        !           327: decays,nuclei,fluctuations,radioactive,nucleus,decay
        !           328: activity,life,line,curie,decays,disintegration,disintegrations,half,exponential,bequerel,nuclei,radioactive
        !           329: 
        !           330: half,nuclei,life,isotope
        !           331: photons,injects,bones,diagnostic,energy,protons,decays,gammaray,blood,human,picture,body,technetium,stable,patient,photon,neutrons,emits,camera,halflife,solution,patients,image,injected,gamma,decay
        !           332: 
        !           333: source,activity,life,decays,half,nuclei,curies
        !           334: uranium,heat,mev,trigger,energy,liese,chemical,decays,energies,neutron,atoms,chernobyl,fragments,benzene,molecules,triggered,nuclei,electrical,absorption,otto,electronic,atom,absorbers,reactors,kinetic,energetically,fission,nuclear,power,meitner,neutrons,reactor,explosions,electron,isotope,hahn,nucleus,decay
        !           335: 
        !           336: plutonium,energy,nuclei,kiloton,alamos,los,kinetic,fission,nuclear,neutrons,reactor,bomb
        !           337: 
        !           338: temperatures,mev,bethe,energy,energies,fusion,proton,neutron,hans,nuclei,lithium,longlived,thermal,atom,hydrogen,nuclear,photon,reactor,positron,nasa,helium,electron,isotope,radioactive,neutrino
        !           339: 
        !           340: star,uranium,fusion,dwarf,expansion,neutron,cosmological,white,galaxies,cosmology,lines,nuclei,supernova,stars,hubble,hydrogen,spectral,planet,nuclear,redshift,observations,astronomical,iron,helium
        !           341: 
        !           342: neutrinos,photons,beta,decays,halflives,sources,atoms,nuclei,electrons,alpha,nuclear,neutrons,particle,particles,isotopes,radioactive,emitted,rays,gamma,decay
        !           343: 
        !           344: becquerel,half,proton,neutron,life,atomic,decay
        !           345: radius,nucleons,nucleus
        !           346: protons,coulomb,electrostatic,force,nucleus
        !           347: energy,proton,nucleus
        !           348: energy,kinetic,kev,emitted,process,nucleus,decay
        !           349: energy,kinetic,positron,kev,nucleus
        !           350: half,nuclei,life
        !           351: half,nuclei,life,isotope,radioactive
        !           352: half,atoms,life,radioactive
        !           353: decays,half,atoms,activity,avogadros
        !           354: half,atoms,activity,life,avogadros,radioactive
        !           355: chromodynamics,strongnuclear,electromagnetic,quarks,gravitational,proton,neutron,atoms,force,interactions,qcd,nuclei,elementary,atom,strong,nucleons,gravitation,hadrons,color,leptons,weak,quantum,lepton,electron,nucleus
        !           356: 
        !           357: forces,strongnuclear,energy,electromagnetic,gravitational,force,fundamental,principle,interaction,heisenberg,graviton,conservation,particles,weak,uncertainty
        !           358: 
        !           359: neutrinos,masses,forces,electromagnetic,gravitational,force,mass,weak,electron,muon,neutrino
        !           360: 
        !           361: kaon,hadron,pions,quarks,decays,kaons,force,strong,hadrons,muons,quarkantiquark,muon,pion
        !           362: 
        !           363: 
        !           364: 
        !           365: 
        !           366: 
        !           367: distance,accelerates
        !           368: capacitors,charges,rate,charge,half,halflife,capacity,capacitor,plates,voltage
        !           369: 
        !           370: ohms,capacitance,resistance,circuit
        !           371: ohms,heated,resistance,circuit,ir,voltage,resistor
        !           372: error,ohms,circuit,voltage,resistor
        !           373: energy,temperature,mass,power,voltage,electrical
        !           374: 
        !           375: 
        !           376: 
        !           377: 
        !           378: 
        !           379: 
        !           380: direction,dc,statements,voltage
        !           381: 
        !           382: 
        !           383: 
        !           384: 
        !           385: orientation,distance,image,focal,magnification
        !           386: 
        !           387: 
        !           388: 
        !           389: 
        !           390: 
        !           391: 
        !           392: 
        !           393: 
        !           394: 
        !           395: 
        !           396: 
        !           397: quiz,lab,quizzes,weeks
        !           398: field,charge,force,electric
        !           399: scalars,charge,electrical,electric,corner,charges,potentials,rectangle,potential,microcoulomb,corners
        !           400: 
        !           401: 
        !           402: 
        !           403: 
        !           404: 
        !           405: 
        !           406: 
        !           407: 
        !           408: 
        !           409: 
        !           410: 
        !           411: 
        !           412: 
        !           413: 
        !           414: 
        !           415: 
        !           416: 
        !           417: 
        !           418: 
        !           419: 
        !           420: 
        !           421: 
        !           422: 
        !           423: 
        !           424: 
        !           425: electromagnetic,morley,einstein,michelson,light,relativity,albert,lorentz,ether
        !           426: 
        !           427: photoelectric,motion,atoms,nobel,atom,einstein,theory,roosevelt,atomic,relativity,albert,brownian,quantum,bomb
        !           428: 
        !           429: experiment,reference,speed,einsteins,frame,postulates,morley,laser,einstein,postulate,michelson,theory,space,light,relativity,velocity,relative
        !           430: 
        !           431: reference,length,pythagorus,mirror,frame,dilated,clock,light,relativity,dilation,beam,velocity
        !           432: 
        !           433: cern,clocks,lifetime,accelerator,dilated,subatomic,accelerators,atomic,dilation,muon,laboratory
        !           434: 
        !           435: reference,twin,inertial,frame,astronaut,paradox,relativity,gamma
        !           436: beta,speeds,speed,light,relative,gamma
        !           437: moon,spacecrafts,relativistic,apollo,relativity,spacecraft,nonrelativistic,gamma
        !           438: 
        !           439: shifted,universe,telescope,wavelength,doppler,telescopes,galaxies,shift,everexpanding,hubble,einstein,red,inversely,redshifted,relativistic,light,galaxy,dilation,velocity,ether
        !           440: 
        !           441: dilated,laser,clock,relativity,beam
        !           442: length,speed,contraction
        !           443: length,noncontracted,lengthcontraction
        !           444: galilean,speed,velocities,lorentz,dilation,velocity,transformation
        !           445: reference,speed,frame,laser,einstein,postulate,velocities,relativistic,light
        !           446: 
        !           447: newtons,relativistic,velocity,relativistically
        !           448: energy,einstein,kinetic,mass,relativistic,nonrelativistic
        !           449: momentum,energy,speed,mass,relativistic,photon,particle
        !           450: energy,kinetic,electron
        !           451: relativy,general,gravitational,gravity,electrostatic,newtonian,accelerating,acceleration,einstein,mass,space,relativity,albert,newton
        !           452: 
        !           453: hole,collapse,general,gravity,schwarzschild,holes,newtonian,spacetime,radius,eddington,mass,black,light,relativity,curvature
        !           454: 
        !           455: beta,energy,wavelength,doppler,speed,shift,relativity,lorentz,dilation,velocity,frequency,gamma,contraction
        !           456: 
        !           457: enterprise,starship,dilation,gamma,contraction
        !           458: ship,light,starship
        !           459: period,orbital,vulcan,frame,circumference,lorentz
        !           460: speed
        !           461: momentum,energy,proton,gev,accelerator
        !           462: heavy,energy,collider,ion,energies,nuclei,brookhaven,nucleon,relativistic,gammafactor,nucleus,contraction
        !           463: 
        !           464: reference,frame,paradox,relativistic,light,starship,voyager,relativity,dilation
        !           465: 
        !           466: beams,mev,proton,beam
        !           467: according,lorentz,velocity,transformation
        !           468: redshifts,space,redshift,velocity
        !           469: masses,schwarzschild,radius,mass
        !           470: 
        !           471: 
        !           472: 
        !           473: 
        !           474: 
        !           475: course,benenson,physics
        !           476: 
        !           477: 
        !           478: 
        !           479: multiply
        !           480: problems,Sample
        !           481: 
        !           482: fisherman,archimedes
        !           483: 
        !           484: 
        !           485: 
        !           486: course,home,topics,benenson,computers
        !           487: demo,demonstrations,welcome
        !           488: 
        !           489: rainfall,biome, precipitation, chart
        !           490: Measurement
        !           491: 
        !           492: welcome
        !           493: floats,buoyancy,archimedes,displaces,density
        !           494: ratio,density
        !           495: buoyancy,Archimedes',floaters,sinks,displaced,density
        !           496: shape,gas,fluid,volume,solid,liquid,properties,states
        !           497: energy,calorimeter, 
        !           498: aluminum,experiment,energy,nutritious,calorimetry,combustion,food
        !           499: 
        !           500: 
        !           501: 
        !           502: 
        !           503: 
        !           504: instruments,wave,physics
        !           505: 
        !           506: 
        !           507: 
        !           508: 
        !           509: number,mach,sound,air,speed,formula
        !           510: waves,sound,vibrations,physics
        !           511: sound
        !           512: matter,states
        !           513: state,fluid
        !           514: fluids,states, classification
        !           515: 
        !           516: 
        !           517: 
        !           518: 
        !           519: density
        !           520: density
        !           521: 
        !           522: float,density,buoyancy
        !           523: density,buoyancy
        !           524: displace,density,buoyancy
        !           525: 
        !           526: float,density,buoyancy
        !           527: beat,beats,frequency
        !           528: Energy,motion
        !           529: 
        !           530: 
        !           531: 
        !           532: 
        !           533: 
        !           534: energy,force,deceleration
        !           535: kinetic,energy
        !           536: energy,potential
        !           537: energy,work,force,potential
        !           538: energy,speed,kinetic,potential,velocity
        !           539: work,force
        !           540: acceleration,energy,inertia,friction,work,conservation,force,weight
        !           541: 
        !           542: force,pressure
        !           543: pressure
        !           544: altitude,pressure
        !           545: depth,pressure
        !           546: floats,sinks,buoyancy
        !           547: pressure,fluid,density
        !           548: 
        !           549: heat,energy
        !           550: experiment,equilibrium,thermal,specific
        !           551: 
        !           552: 
        !           553: heat,equilibrium,temperature
        !           554: frequency
        !           555: 
        !           556: 
        !           557: 
        !           558: 
        !           559: 
        !           560: 
        !           561: 
        !           562: 
        !           563: 
        !           564: 
        !           565: 
        !           566: 
        !           567: 
        !           568: 
        !           569: 
        !           570: 
        !           571: 
        !           572: 
        !           573: equilibrium,heated,temperature
        !           574: heat,state,change,latent
        !           575: 
        !           576: heat,energy,states,latent
        !           577: heat,equilibrium,temperature
        !           578: heat,specific,boiling,change,boil,melt,temperature,melting
        !           579: heat,energy,temperature
        !           580: 
        !           581: scales,length,powers,scale,units
        !           582: 
        !           583: 
        !           584: 
        !           585: 
        !           586: 
        !           587: 
        !           588: 
        !           589: 
        !           590: reflect,wave,refraction,medium,frequency,difraction
        !           591: 
        !           592: refraction,lens
        !           593: air,speed,wave,wavelength
        !           594: 
        !           595: 
        !           596: 
        !           597: sound,air,number,speed,mach,formula
        !           598: beat,beats,frequency
        !           599: 
        !           600: 
        !           601: 
        !           602: 
        !           603: 
        !           604: 
        !           605: 
        !           606: 
        !           607: 
        !           608: 
        !           609: 
        !           610: 
        !           611: 
        !           612: 
        !           613: 
        !           614: 
        !           615: 
        !           616: 
        !           617: 
        !           618: 
        !           619: 
        !           620: 
        !           621: 
        !           622: 
        !           623: 
        !           624: 
        !           625: 
        !           626: 
        !           627: 
        !           628: 
        !           629: 
        !           630: 
        !           631: 
        !           632: 
        !           633: 
        !           634: 
        !           635: 
        !           636: 
        !           637: 
        !           638: 
        !           639: 
        !           640: 
        !           641: 
        !           642: 
        !           643: 
        !           644: 
        !           645: 
        !           646: 
        !           647: 
        !           648: 
        !           649: 
        !           650: 
        !           651: 
        !           652: 
        !           653: 
        !           654: 
        !           655: 
        !           656: 
        !           657: 
        !           658: 
        !           659: 
        !           660: 
        !           661: 
        !           662: 
        !           663: 
        !           664: 
        !           665: 
        !           666: 
        !           667: 
        !           668: 
        !           669: 
        !           670: 
        !           671: 
        !           672: 
        !           673: 
        !           674: 
        !           675: 
        !           676: 
        !           677: 
        !           678: 
        !           679: 
        !           680: 
        !           681: 
        !           682: 
        !           683: 
        !           684: 
        !           685: 
        !           686: 
        !           687: 
        !           688: 
        !           689: 
        !           690: 
        !           691: 
        !           692: 
        !           693: 
        !           694: 
        !           695: 
        !           696: 
        !           697: 
        !           698: 
        !           699: 
        !           700: 
        !           701: 
        !           702: 
        !           703: 
        !           704: 
        !           705: 
        !           706: 
        !           707: 
        !           708: 
        !           709: 
        !           710: 
        !           711: 
        !           712: 
        !           713: 
        !           714: 
        !           715: 
        !           716: 
        !           717: 
        !           718: 
        !           719: 
        !           720: 
        !           721: 
        !           722: 
        !           723: 
        !           724: 
        !           725: 
        !           726: 
        !           727: 
        !           728: 
        !           729: 
        !           730: 
        !           731: 
        !           732: 
        !           733: 
        !           734: 
        !           735: 
        !           736: 
        !           737: 
        !           738: 
        !           739: 
        !           740: 
        !           741: 
        !           742: 
        !           743: 
        !           744: 
        !           745: 
        !           746: 
        !           747: 
        !           748: 
        !           749: 
        !           750: 
        !           751: 
        !           752: genetics,inheritance,pangenesis,darwin,hereditary
        !           753: genetics,genetic,gregor,inheritance,inheritence,mendel
        !           754: genetics,mendel,hybridization,dominant,genetic,hybrid,recessive,filial
        !           755: mendel,gregor,alleles,genetics,inheritance,gene,loci,mendels,chromosome,allele,genetic,pea
        !           756: 
        !           757: genetics,genetic, gregor, inheritance, inheritence,mendel
        !           758: genetics,mendel,meiosis,gene,haploid,diploid,genetic,gregor
        !           759: gregor,mendel,homologs,metaphase,inheritance,meiosis,haploid,anaphase,prophase,chromosome,chromosomes,telophase
        !           760: 
        !           761: punnette,square, genetic, genetics, gregor, mendel,testcross,cross,test
        !           762: genetics,gregor, mendel,meiosis,genetic
        !           763: 
        !           764: 
        !           765: 
        !           766: 
        !           767: 
        !           768: 
        !           769: 
        !           770: alleles,gametes,assortment,mendel,phenotype,independent,punnett
        !           771: genetics,dihybrid,punnett,mendel,phenotype,genotypes,ratio
        !           772: independent,frequencies,genetics,multiplication,ratios,rule,probability,phenotypic,rules,addition,alternative
        !           773: 
        !           774: monohybrid,alleles,independent,genetics,punnett,square,genetic,cross,crosses
        !           775: 
        !           776: dihybrid,chromosome,alleles,punnett,square,genetics,multiplication,meiosis,probability,genotype
        !           777: 
        !           778: phenotype,addition,independent,genetics,probability,punnett,square,genotype
        !           779: monohybrid,independent,genetics,probability,phenotypes,probabiity,cross,genotype,trihybrid,crosses
        !           780: 
        !           781: phenotype,independent,genetics,probability,trihybrid,crosses
        !           782: ratios,mendels,independent,genetics,inheritance,meiosis,chromosome
        !           783: over,sister,paternal,alleles,chromosomal,crossing,chromatids,nonsister,homologs,genetics,maternal,chromosome
        !           784: 
        !           785: paternal,alleles,genetics,chromatids,meiosis,nonsister,maternal,recombination,genetic,nonparental
        !           786: 
        !           787: genetics,recombination,recombinant,nonrecombinant,parental,nonparental
        !           788: dihybrid,monohybrid,chromatids,nonsister,independent,crossover,genes,genetics,inheritance,genotypic,meiosis,probability,squares,trait,traits,chromosome,punnett,summary,nonparental,phenotypic,crosses
        !           789: 
        !           790: 
        !           791: 
        !           792: 
        !           793: 
        !           794: 
        !           795: 
        !           796: 
        !           797: 
        !           798: 
        !           799: 
        !           800: 
        !           801: 
        !           802: 
        !           803: 
        !           804: 
        !           805: 
        !           806: 
        !           807: 
        !           808: 
        !           809: 
        !           810: 
        !           811: carbohydrates,biomolecule,carbohydrate,starch
        !           812: carbohydrate,galactose,subunits,sugars,carbohydrates,sugar,ribulose,glucose,fructose,mannose,carbo,sixcarbon
        !           813: 
        !           814: carbohydrate,biomolecule,monomer,polymerization,subunits,sugars,carbohydrates,polysaccharides,disaccharide,monosaccharide,fructose
        !           815: 
        !           816: carbohydrate,biomolecule,cellulose,carbohydrates,function,starches,polymer,configuration,starch
        !           817: 
        !           818: 
        !           819: 
        !           820: carbohydrate,polymerization,carbohydrates,glucose,polymer,position
        !           821: biomolecule,casein,amino,proteins,protein,acid
        !           822: sidechain,casein,amino,proteins,protein,acids,acid,backbone
        !           823: polymerization,polypeptides,macromedia,polypeptide,acids,shockwave,acid
        !           824: amino,polypeptide,proteins,chains,protein,acids,acid
        !           825: amino,proteins,protein,structure,primary,acids,acid
        !           826: lysine,polar,histidine,leucine,met,phenylalanine,cys,asparagine,tyrosine,sidechain,thr,chemistry,alanine,arginine,aspartic,lys,methionine,pro,glutamine,amine,amino,arg,glycine,proteins,asn,asp,glutamic,hydrophobic,nonpolar,isoleucine,protein,chain,cysteine,phe,hydrophilic,cyan,gln,glu,gly,trp,valine,acids,ser,tryptophan,proline,val,threonine,ala,acid,ile,serine
        !           827: 
        !           828: pleated,carboxyl,ahelices,amino,proteins,sidechains,structure,cytochromef,ahelix,secondary,hbond,bpleated,acids,acid
        !           829: 
        !           830: vijay,amino,proteins,protein,structure,pande,animation,acid
        !           831: subunits,polypeptides,polypeptide,proteins,quaternary,chain,structure
        !           832: protein,transport,structural,biochemical,storage,casein,amino,papain,proteins,protein,enzymes,papains,acids,acid
        !           833: 
        !           834: 
        !           835: 
        !           836: 
        !           837: cytochrome,tertiary,amino,proteins,protein,cysteine,cysteines,cytochromef,proteinis,acids,acid
        !           838: 
        !           839: subunits,rubisco,enzyme,proteins,ribulose,quaternary,protein,quarternary,enzymes,structure,active
        !           840: 
        !           841: biomolecule,nucleic,genes,proteins,dna,protein,acids,acid
        !           842: deoxy,nucleotide,deoxyribose,dna,deoxyribonucleic,monomers,nucleotides,acids,polymers,acid
        !           843: 
        !           844: nucleic,rna,deoxyribose,polynucleotide,dna,chain,monomers,nucleotides,phosphate,ribose,acids,acid
        !           845: 
        !           846: adenine,cystine, guanine, thymine, 
        !           847: uracil,purine,nucleotide,ribonucleic,polynucleotides,nucleic,rna,pyrimidine,polynucleotide,dna,deoxyribonucleic,chain,acids,acid
        !           848: 
        !           849: rnas,rna,biomolecule,amino,polynucleotide,dna,uracil,gene,trna,acids,thymine,acid
        !           850: 
        !           851: 
        !           852: 
        !           853: 
        !           854: biomolecule,deoxy,ribonucleic,nucleic,rna,sugar,deoxyribose,dna,deoxyribonucleic,acids,acid
        !           855: 
        !           856: purines,nucleic,pyrimidine,nucliec,uracil,nucleotides,pyrimidines,acids
        !           857: biomolecules,nucleotide,nucleic,polynucleotide,activity,nucleotides,shockwave,drag,acid
        !           858: 
        !           859: 
        !           860: 
        !           861: biomolecules,cholesterol,lipids,lipid
        !           862: biomolecules,biomolecules,biological,lipid
        !           863: biomolecule,lipid,steroids,biomolecules,cholesterol,triglycerides,testerone,lipids,fat,phospholipids,acid
        !           864: 
        !           865: biomolecule,lipid, 
        !           866: ,biomolecules,glycerol,saturated,monounsaturated,polyunsaturated,fats,triglycerides,lipids,unsaturated,fat,acid
        !           867: 
        !           868: fat,lipid, 
        !           869: biomolecule,polar,biomolecules,fatty,fattyacid,fats,hydrophobic,hydrophilic,acids,lipids,phospholipids,acid,phospholipid
        !           870: 
        !           871: steroid,fat, lipid, 
        !           872: biomolecule,testosterone,steroids,biomolecules,anabolic,estradiol,lipids
        !           873: 
        !           874: 
        !           875: 
        !           876: 
        !           877: biomolecule,lipid, 
        !           878: hydrophilic,polar,positive,biomolecules,hydrophobic,nonpolar,lipids
        !           879: lipid,biomolecule, 
        !           880: polar,testosterone,biomolecules,progesterone,cholesterol,nonpolar,estradiol,lipids,fat,phospholipids
        !           881: 
        !           882: 
        !           883: 
        !           884: 
        !           885: 
        !           886: 
        !           887: amino,carbohydrate, biomolecule, 
        !           888: lipid,biomolecules,nucleic,carbohydrates,acids,lipids,digested,proteins,digestion
        !           889: 
        !           890: 
        !           891: 
        !           892: 
        !           893: 
        !           894: 
        !           895: 
        !           896: 
        !           897: 
        !           898: 
        !           899: 
        !           900: 
        !           901: 
        !           902: 
        !           903: 
        !           904: 
        !           905: 
        !           906: 
        !           907: 
        !           908: 
        !           909: 
        !           910: 
        !           911: organelles,thylakoid,chloroplast,photo,matrix,granum,membrane,stroma,reactions,light,chloroplasts,photosynthesis,plant
        !           912: 
        !           913: 
        !           914: 
        !           915: 
        !           916: 
        !           917: 
        !           918: 
        !           919: 
        !           920: 
        !           921: glycolysis,cycle,coa,acetylcoa,acetyl,krebs,pyruvate,respiration
        !           922: cycle,coa,acetylcoa,acetyl,krebs,glycolysis,respiration
        !           923: cycle,coa,acetyl,krebs,respiration
        !           924: gylcolysis,cycle,fadh,krebs,nadh,fad,nad,respiration
        !           925: glycolysis,cycle,krebs,respiration
        !           926: cycle,krebs,glycolysis,respiration
        !           927: kg,ma,force,acceleration,static,mass,coefficient,friction
        !           928: simulation,gravity,force,friction,trajectories,accelerates,air,resistance,velocity,terminal
        !           929: 
        !           930: forces,kinetic,static,coefficient,friction,balance,force,balanced
        !           931: characterization,components,forces,kinetic,static,coefficient,perpendicular,friction,inclined,force,plane
        !           932: 
        !           933: mitochondrion,transport,cellular,chain,man,electron,respiration
        !           934: transport,chain,animation,electron,respiration
        !           935: transport,chain,glycolysis,electron,respiration
        !           936: transport,cycle,anaerobic,coa,cellular,acetyl,krebs,chain,fermentation,glycolysis,electron,respiration
        !           937: 
        !           938: glycolysis,krebs, 
        !           939: cycle,transport,aerobic,anaerobic,chain,fermentation,electron,respiration
        !           940: gene,dna, rna, protein,transcription
        !           941: 
        !           942: 
        !           943: 
        !           944: rnas,subunits,unit,rna,ribosomal,rrna,function,mrna,translation,ribosomes,subunit,functional,ribosome,trnas
        !           945: 
        !           946: 
        !           947: 
        !           948: 
        !           949: dogma,rna,dna,protein,gene,transcription
        !           950: dogma,rna,dna,translation,protein,transcription
        !           951: dogma,rna,ribosomal,dna,translation,protein,messenger,nucleotides,transcription
        !           952: 
        !           953: rna,amino,dna,translation,protein,gene,polymerase,transciption,nucleoside,acid
        !           954: 
        !           955: gene,rna,mrna,protein,transcript,transcription
        !           956: 
        !           957: 
        !           958: 
        !           959: 
        !           960: 
        !           961: 
        !           962: 
        !           963: 
        !           964: 
        !           965: 
        !           966: 
        !           967: 
        !           968: frequency
        !           969: 
        !           970: concept,solution
        !           971: 
        !           972: virtual,concave,convex,image
        !           973: incidence,angle,refraction,light
        !           974: chain,autotrophs,requirements,energy,food,herbivores,omnivores
        !           975: food,energy
        !           976: 
        !           977: energy
        !           978: 
        !           979: 
        !           980: 
        !           981: migration,chlorophyll,pigment,xanthophyll,carotene,photosynthesis,chromatography,chromatogram,absorption,spinach
        !           982: 
        !           983: 
        !           984: pendulum,period,wave
        !           985: 
        !           986: 
        !           987: speed,electromagnetic,medium,waves,wave
        !           988: amplitude,trough,crest,properties,hertz,troughs,sine,curve
        !           989: physics,instruments,wave
        !           990: sound,vibrations,physics,waves
        !           991: sound,vibrations,physics,waves
        !           992: sound,vibrations,physics,waves
        !           993: sound,vibrations,physics,waves
        !           994: 
        !           995: modulus,transverse,harmonic,glockenspiels,bar,harmonics,youngs,frequency
        !           996: spinach,chromatography,chlorophyll,carotene,solvent,pigment,xanthophyll
        !           997: spinach,chromatography,chlorophyll,migrated,pigments,plant
        !           998: 
        !           999: kinematic,average,position,physics,velocity
        !          1000: energy,molecules,sunlight,organic,light
        !          1001: energy,compounds,sunlight,plants,organic,light
        !          1002: dioxide,energy,carbon,captured,atp,sunlight,light,stored,nadph
        !          1003: calvin,cycle,adenosine,light,photosynthesis,photolysis
        !          1004: reactant,light
        !          1005: products,product,light
        !          1006: nadph,nadp
        !          1007: adp,atp
        !          1008: co
        !          1009: adp,atp,co
        !          1010: 
        !          1011: calorimetry,energy,combustion,temperature,mass,food
        !          1012: kg,pounds,mass,conversion,weigh,kgs,weight,pound
        !          1013: reduced,oxidized,energy,calvin,chloroplasts,nadph,sun,nadp,plant,electrons,atp
        !          1014: 
        !          1015: instantaneous,graph,velocity
        !          1016: wavelength,sound,vibrations,harmonic,beat
        !          1017: sound,intensity
        !          1018: sound,intensity
        !          1019: power,sound,intensity
        !          1020: sound
        !          1021: 
        !          1022: speed,average
        !          1023: length,components,component,coordinates
        !          1024: 
        !          1025: 
        !          1026: addition,direction,vector
        !          1027: addition,direction,vector
        !          1028: vectors,vector,angle
        !          1029: reflection
        !          1030: 
        !          1031: 
        !          1032: 
        !          1033: 
        !          1034: 
        !          1035: motion,magnet,forces,reaction,law,laws,friction,gravity,action,newtons,force,dynamics,kinematics,inertia,magnetic,weight
        !          1036: 
        !          1037: 
        !          1038: 
        !          1039: 
        !          1040: motion,projectile,velocity
        !          1041: energy,transport,glycolysis,electron,sugarproducing
        !          1042: energy,transport,molecules,effect,water,atps,plants,organic,light,coenzyme,electron
        !          1043: 
        !          1044: energy,sugar,carotenoidsyellow,light,photosynthesis
        !          1045: product,waste,cellular,glucose,breakdown,pyruvate,fuel,respiration
        !          1046: compounds,formula
        !          1047: 
        !          1048: equilibrium,forces,energy,stretched,compress,force,stretching,compressed,compresses,acceleration,compressing,spring,velocity
        !          1049: 
        !          1050: 
        !          1051: energy,work,kinetic,potential,velocity
        !          1052: 
        !          1053: 
        !          1054: 
        !          1055: 
        !          1056: 
        !          1057: 
        !          1058: 
        !          1059: 
        !          1060: 
        !          1061: 
        !          1062: 
        !          1063: 
        !          1064: 
        !          1065: 
        !          1066: 
        !          1067: 
        !          1068: 
        !          1069: 
        !          1070: 
        !          1071: motion,collisions,momentum,energy,action,force
        !          1072: 
        !          1073: momentum,direction,mass,velocities,linear,velocity,momenta
        !          1074: momentum,forces,energy,energies,force,collisions,vector,collide,kinetic,velocities,elastic,conserved,conservation,inelastic,collision,momenta
        !          1075: 
        !          1076: 
        !          1077: 
        !          1078: 
        !          1079: 
        !          1080: 
        !          1081: 
        !          1082: 
        !          1083: 
        !          1084: 
        !          1085: 
        !          1086: 
        !          1087: 
        !          1088: 
        !          1089: 
        !          1090: 
        !          1091: 
        !          1092: 
        !          1093: 
        !          1094: 
        !          1095: 
        !          1096: 
        !          1097: 
        !          1098: 
        !          1099: 
        !          1100: 
        !          1101: 
        !          1102: 
        !          1103: 
        !          1104: 
        !          1105: 
        !          1106: 
        !          1107: 
        !          1108: 
        !          1109: 
        !          1110: 
        !          1111: 
        !          1112: 
        !          1113: 
        !          1114: 
        !          1115: 
        !          1116: 
        !          1117: 
        !          1118: 
        !          1119: 
        !          1120: 
        !          1121: 
        !          1122: 
        !          1123: 
        !          1124: 
        !          1125: 
        !          1126: 
        !          1127: 
        !          1128: 
        !          1129: 
        !          1130: 
        !          1131: 
        !          1132: 
        !          1133: 
        !          1134: 
        !          1135: 
        !          1136: 
        !          1137: 
        !          1138: 
        !          1139: 
        !          1140: 
        !          1141: 
        !          1142: 
        !          1143: 
        !          1144: 
        !          1145: 
        !          1146: 
        !          1147: 
        !          1148: 
        !          1149: 
        !          1150: 
        !          1151: 
        !          1152: 
        !          1153: 
        !          1154: 
        !          1155: nomenclature
        !          1156: nomenclature
        !          1157: compounds,formula
        !          1158: 
        !          1159: bouncing,energy,gravitational,height,mass,bounce,potential
        !          1160: angle,energy,net,work,force,acceleration,kinetic,coefficient,friction,inclined,velocity
        !          1161: 
        !          1162: speed,average,mass,power
        !          1163: energy,efficiency,watts,flow,output,power,conservation
        !          1164: energy,speed,kinetic,mass,velocity
        !          1165: energy,force,spring,potential,displacement
        !          1166: heat,frictional,energy,force,coefficient
        !          1167: energy,efficiency,watts,power,engine,potential,velocity
        !          1168: momentum,energy,lost,kinetic,collision,velocity
        !          1169: momentum,collides,height,friction,conservation,hf,inelastic,collision
        !          1170: momentum,impulse,force,average,velocity
        !          1171: energies,kinetic,asteroid,exploding,momentum,joules,energy,conservation,bomb,explosion
        !          1172: 
        !          1173: momentum,speed,mass,velocities,conserved,friction,velocity
        !          1174: momentum,impulse,force,average
        !          1175: inelastic,momentum,energy,conservation,collision,velocity
        !          1176: center,components,mass
        !          1177: polar,cartesian,coordinates
        !          1178: 
        !          1179: angle,angular,righthand,vectors,vector,thumb,rule,rotation,velocity
        !          1180: polar,cartesian,coordinates
        !          1181: player,swung,swing,golf
        !          1182: motion,angular,kinematic,circular,acceleration,linear,velocity
        !          1183: energy,distance,gravitational,earth,potentials,potential
        !          1184: impact,asteroid
        !          1185: orbits,galilei,galileo,planet,planets,kepler
        !          1186: revolution,seasons,seasonal
        !          1187: forces,orbital,gravity,satellite,force,radius,circular,acceleration,orbit,swing,centripetal
        !          1188: 
        !          1189: geostationary,satellite,orbits,satellites,orbit,tv,animation
        !          1190: thermal,contracting,contraction,concrete
        !          1191: temperatures,heat,equilibrium,temperature,water,entropy,celsius
        !          1192: equilibrium,angle,energy,work,torque,force,rotational,potential
        !          1193: newtons,force,water
        !          1194: dynamics,fluid
        !          1195: magnitude,center,acceleration,mass,torque,force,tension
        !          1196: center,equilibrium,fulcrum,rotational,mass,position
        !          1197: inertia,axis,rotates,perpendicular,moment,rotating,parallel,theorem,plane
        !          1198: energy,mgh,height,work,gravity,speed,rotational,kinetic,inclined,rotation,potential
        !          1199: 
        !          1200: angular,parallel,speed,skaters,mass,rotation,paths,velocity
        !          1201: angular,torque,speed,rotational,circular,magnitude,acceleration,inertia,ia
        !          1202: acceleration,kinetic,inertia,gravitational,height,conservation,centripetal,potential,rotational,velocity,translational
        !          1203: 
        !          1204: momentum,angular,moment,inertia,conservation,rotation
        !          1205: energy,moment,rotational,kinetic,inertia,rotation
        !          1206: torque,force,perpendicular
        !          1207: motion,speed,circular,magnitude,acceleration,centripetal,constant
        !          1208: speed,acceleration,centripetal,curvature
        !          1209: speed,force,acceleration,friction,centripetal,curvature
        !          1210: frictional,angular,force,friction,centripetal,velocity
        !          1211: minimum,energy,energies,height,force,mechanical,acceleration,kinetic,conserved,friction,conservation,centripetal,potential,weight,velocity
        !          1212: 
        !          1213: energy,height,work,gravity,force,mass,theorem
        !          1214: radius,orbit,law,keplers
        !          1215: geostationary,speeds,orbital,speed,satellite,radius,satellites,orbit
        !          1216: energy,satellite,satellites,orbit,kinetic,mass,orbiting
        !          1217: revolutions,acceleration,angular,revolution,accelerates,speed,radianss,radians
        !          1218: 
        !          1219: percent,percentage,error,fractional
        !          1220: energy,potential
        !          1221: universe,atoms,body,water,avogadros
        !          1222: gravity,free,fall
        !          1223: unit,britain,british,units
        !          1224: si,dimensional,analysis,dimensionality,dimensions
        !          1225: sf,digits,accuracy,sfs,significant
        !          1226: kg,intrinsic,mass,scale
        !          1227: expansion,volume,coefficient
        !          1228: stress,expanding,railroad,track,temperature,strain,expand
        !          1229: exercise,weights,drinks,cal,metabolic,weight,calories
        !          1230: boiling,melt,heat,lattice,temperature,latent
        !          1231: equilibrium,water
        !          1232: heat,carnot,cycle,processes,entropy,adiabatic,efficiency,cycles
        !          1233: gas,expansion,work,ideal,free,irreversible,reversible,entropy,volume,inverse,isothermal,process
        !          1234: 
        !          1235: energy,temperature,thermal,reservoirs,kelvin,reservoir,entropy
        !          1236: temperature,metabolic,watt,power,entropy
        !          1237: 
        !          1238: 
        !          1239: 
        !          1240: welcome,math,mathematics,champ
        !          1241: 
        !          1242: oscillation,acceleration,harmonic,displacement
        !          1243: 
        !          1244: 
        !          1245: sounds,db,intensities,intensity
        !          1246: decibel,bands,rock,threshold,rockbands,db,sound
        !          1247: pressure,amplitude,power,wave,speakers,intensity
        !          1248: 
        !          1249: world
        !          1250: sum
        !          1251: physlets
        !          1252: cells,lysosome,extracellular,histamine,plasma,cell,macrophages,cellmacrophages,membrane,immune
        !          1253: 
        !          1254: 
        !          1255: 
        !          1256: metabolism,table,nitrate,growth,nitrateabsent,yeast,nitratepresent,data
        !          1257: photosynthesis,respiration
        !          1258: 
        !          1259: 
        !          1260: momentum,impulse,force,mass,velocity
        !          1261: 
        !          1262: percent
        !          1263: percent
        !          1264: 
        !          1265: 
        !          1266: 
        !          1267: 
        !          1268: 
        !          1269: 
        !          1270: 
        !          1271: 
        !          1272: 
        !          1273: 
        !          1274: 
        !          1275: 
        !          1276: 
        !          1277: 
        !          1278: 
        !          1279: 
        !          1280: 
        !          1281: 
        !          1282: protein,beans,material,energy,crop,soybeans,biomass,biochemical,photosynthesis,max,soybean,glycine,tofu,plant,agricultural,soy
        !          1283: 
        !          1284: chloroplast,nicotonamideadenine,rubp,dinucleotide,twostep,triphosphate,energy,adenine,chemical,calvin,reactions,bisphosphate,cycle,light,photosynthesis,nadph,plant,ribulose,atp
        !          1285: 
        !          1286: photosystems,study,energy,chemical,reactions,guide,light,chloroplasts,photosynthesis,objectives
        !          1287: 
        !          1288: question,problem,color,light,ultraviolet,infrared,photosynthesis,soybean,colors,spectrum
        !          1289: 
        !          1290: reflect,color,soybeans,reactions,light,pigments,problem,photosynthesis,leaf,absorb,soybean,photosynthetic,colors,question
        !          1291: 
        !          1292: 
        !          1293: momentum,energy,collides,elastically,collisions,velocities,elastic,collision,velocity
        !          1294: 
        !          1295: 
        !          1296: question,problem,chlorophyll,soybean,absorption,accessory,pigment,pigments,carotenoid,spectra,photosynthesis,absorb,spectrum
        !          1297: 
        !          1298: 
        !          1299: momentum,ball,impulse,speed,force,mass
        !          1300: 
        !          1301: 
        !          1302: 
        !          1303: 
        !          1304: 
        !          1305: biochemical,photosynthesis,photosystems,photochemistry,nadph,photosystem,chlorophyll,nadp,thylakoid,activation,pigment,atp
        !          1306: 
        !          1307: photosystem,membrane,atp,protein,photosynthesis,chlorophyll,cytochrome,photo,adp,plastoquinone,plastocyanin,pigments,lipid
        !          1308: 
        !          1309: chlorophyll,calvin,cycle,plastocyanin,pigments,photosynthesis,reductase,coenzyme,nadph,photosystem,chlorophyllprotein,nadp,ferredoxin
        !          1310: 
        !          1311: thylakoid,transport,membrane,atp,reactions,light,photosynthesis,synopsis,nadph
        !          1312: 
        !          1313: z,scheme, 
        !          1314: z-diagram,scheme,cytochrome,ferrodoxin,calvin,cycle,photosystem,diagram,plastoquinone,plastocyanin,photosynthesis,nadph
        !          1315: 
        !          1316: lumen,chlorophyll,plastoquinone,thylakoid,membranes,calvin,cycle,photosynthesis,coenzyme,nadph,photosystem,nadp,membrane,stroma,atp
        !          1317: 
        !          1318: units
        !          1319: polar,dimension,vectors,vector,twodimensional
        !          1320: 
        !          1321: rubp,phosphoglycerate,calvin,lego,cycle,rubisco,atp,photosynthesis,nadph,glyceraldhyde
        !          1322: 
        !          1323: 
        !          1324: 
        !          1325: rubp,calvin,cycle,rubisco,os,photo,atp,co,synthesis,photosynthesis,nadph
        !          1326: calvin,cycle,chloroplast,glucose,atp,photosynthesis,nadph
        !          1327: rubisco,rubp,phosphoglycerate,calvin,cycle,atp,photosynthesis,nadph,phosphorylated
        !          1328: 
        !          1329: sucrose,carbon,transport,carbohydrates,biochemical,glucose,fructose,photosynthesis
        !          1330: 
        !          1331: Calvin,cycle,cyanobacteria,storage,glucose,chloroplasts,photosynthesis,gp,symbiotic,evolutionary,prokaryotic,plant,carbohydrate,starch
        !          1332: 
        !          1333: wall,carbon,structural,cellulose,skeleton,fiber,rayon,glucose,biosphere,polymer,photosynthesis,cell,hemp,walls,plant,starch
        !          1334: 
        !          1335: biomolecules,carbon,carbohydrates,biochemical,amino,glucose,atp,carboydrates,photosynthesis,acids,glycolysis
        !          1336: 
        !          1337: 
        !          1338: calvin,product,soybeans,cycle,biochemical,soybean,biosynthesis,glyceraldehyde,phosphate,production,photosynthesis
        !          1339: 
        !          1340: 
        !          1341: welcome,physics
        !          1342: 
        !          1343: 
        !          1344: unit,convert,si,conversion,british,units,conversions
        !          1345: percent,sale,price
        !          1346: 
        !          1347: 
        !          1348: 
        !          1349: 
        !          1350: 
        !          1351: 
        !          1352: concept,sciences,science,scientific,physics,explanations
        !          1353: carbohydrate,protein, 
        !          1354: question,study,biomolecules,fatty,guide,questions,carbohydrates,macromolecules,acids,lipids,biomolecule,amino,objectives,proteins
        !          1355: 
        !          1356: macromolecule,monomer,subunits,biomolecules,macromolecules,biomolecule,oligomer,hydrolysis,tetramer,polymer,synthesis,monomers,subunit,dehydration,covalent,polymers,bond,starch
        !          1357: 
        !          1358: polymerization,carbohydrates,polysaccharides,glucose,monomers,polysaccharide,polymers,shockwave,carbohydrate
        !          1359: 
        !          1360: biomolecule,structure,lysine,amino,proteins,protein,tryptophan,acid
        !          1361: gene,dna, transcription,genes,dna,protein,gene
        !          1362: polymerase,region,rna,promoter,transcription,dna
        !          1363: polymerase,rna,strand,template,transcription,dna
        !          1364: protein,termination,polymerase,rna,transcription,dna
        !          1365: protein,nucleotides,polarity,transcription
        !          1366: metabolism,respiration, anaerobic, aerobic, 
        !          1367: fermentation,nitrate,growth,yeast,aeruginosa,deep,data
        !          1368: respiration,fermentation, anaerobic, aerobic
        !          1369: nitrate,specimen,metabolism,absence,agar
        !          1370: yeast,metabolism,aeruginosa,pseudomonas
        !          1371: recycle,acceptor,yeast,aeruginosa,ferment,nad,electron
        !          1372: nitrate,oxygen,acceptor,aerobic,anaerobic,metabolism,electrons,atp,fermentation,glycolysis,nad,electron,respiration
        !          1373: 
        !          1374: nitrate,oxygen,growth,trypticase,energy,acceptor,yeast,aerobic,anaerobic,metabolism,grow,culture,aeruginosa,soy,respirers,cells,organic,fermentation,fermenters,pseudomonas,food,metabolize,denitrifying,inorganic,nad,electron,respiration
        !          1375: 
        !          1376: fermentation,aerobic,anaerobic,respiration
        !          1377: transport,photosynthesis,electron,respiration
        !          1378: 
        !          1379: aerobic,anaerobic,fermenters,metabolize
        !          1380: acceptor,product,aerobic,anaerobic,fermenter,organic,fermentation,inorganic,electron,respirer,respiration
        !          1381: 
        !          1382: nitrate,growth,metabolism,deep,agar
        !          1383: net,aerobic,anaerobic,atp,fermentation,glycolysis,respiration
        !          1384: oxygen,cellulose,recycles,fats,glucose,atp,fermentation,cell,glycolysis,respiration,starch
        !          1385: 
        !          1386: citric,cycle,atp,krebs,pyruvic,glycolysis,electron
        !          1387: energy,yeast,glucose,atp,fermentation,photosynthesis,respiration
        !          1388: 
        !          1389: photosynthesis,chloroplasts, absorbance,color
        !          1390: rate,chloroplasts,photosynthesis
        !          1391: experiment,dpip,chloroplasts,reduce,data
        !          1392: dpip,chloroplasts,boiled,reduce,dark
        !          1393: reduction,dpip,light,chloroplasts,boiled,unboiled,reduce,dark
        !          1394: activity,carotenes,xanthophylls,yellow,chloroplasts,pigments,increase,chlorophylls,photosynthetic
        !          1395: 
        !          1396: oxygen,photosystems,chlorophyll,reduced,cytochrome,oxidized,energy,absorbs,spectrophotometry,dye,organic,dpip,absorbance,light,chloroplasts,colorimeter,chloroplast,unboiled,photosynthesis,nadph,photosystem,objectives,electron,data,atp
        !          1397: 
        !          1398: 
        !          1399: 
        !          1400: simulation,lab,plants,light,questions,photosynthesis,excite,electrons
        !          1401: blue,colorless,reduced,oxidized,energy,dpip,light,questions,absorb,excited,nadph,nadp,electrons,atp
        !          1402: 
        !          1403: 
        !          1404: motion,kinematic,acceleration
        !          1405: direction,distance,displacement,physics
        !          1406: 
        !          1407: 
        !          1408: 
        !          1409: 
        !          1410: radius,height
        !          1411: lenght
        !          1412: 
        !          1413: mass
        !          1414: 
        !          1415: weight
        !          1416: weight
        !          1417: 
        !          1418: 
        !          1419: time
        !          1420: 
        !          1421: 
        !          1422: 
        !          1423: 
        !          1424: 
        !          1425: 
        !          1426: 
        !          1427: unit,length,dimension,meters,converted,dimensions,dimensional,analysis,mass,dimensionality,units
        !          1428: 
        !          1429: research,experiment,scientist,qualitative,descriptive,independent,controlled,hypothesis,quantitative,scientific,measurements,method,data,numerical,variable
        !          1430: 
        !          1431: experiment,growth,conclusion,information,condition,measurements,plant,explanation,variable
        !          1432: 
        !          1433: experiment,scientist,measured,dependent,independent,hypothesis,measuring,test,variable
        !          1434: 
        !          1435: 
        !          1436: diffusion,starch, iodine, cell membrane,beaker,baggy
        !          1437: lab,color,diffusion,iodine,procedure,data,starch
        !          1438: experiment,diffused,simulation,beaker,baggy,lab,transport,iodine,cell,membrane,starch
        !          1439: 
        !          1440: pores,baggy,iodine,size,membrane,starch
        !          1441: baggy,cell,fish,salt,water,membrane,freshwater
        !          1442: cf,translation,gene,cystic,lungs,osmosis,fibrosis,proteins,membrane,mrna,cftr,transcription,dna
        !          1443: 
        !          1444: gene,translation,protein,nucleotide,proteins,dna
        !          1445: translation,protein,gene,rna,trna,ribosome,rrna,mrna
        !          1446: protein,rnas,ribosomes,subunit,rna,eukaryotic,bacterial,bacteria,ribosome,ribosomal,rrna,prokaryotic,transfer
        !          1447: 
        !          1448: translation,protein,rnas,nucleotide,structure,ribosomes,rna,trna,ribosomal,proteins,transfer,mrna
        !          1449: 
        !          1450: translation,protein,met,codons,codon,rna,methionine,ribosome,rrna,triplet,mrna
        !          1451: 
        !          1452: reproduction,organized,inherited,membrane
        !          1453: communities,cells,structure,environment,organism,maintaining,cell,temperature,interactions,function,organisms,structures
        !          1454: 
        !          1455: gene,protein,translation,activity,macromedia,shockwave,genes,proteins,transcription
        !          1456: 
        !          1457: cystic,translation,protein,chaperones,proteosomes,chime,ribosome,fibrosis,folding,polypeptide,proteins,cftr,chaperone
        !          1458: 
        !          1459: rna,translation,protein,nucleotide,ribosomes,codon,gene,cystic,trna,ribosome,fibrosis,rrna,cftr,dna
        !          1460: 
        !          1461: 
        !          1462: conversions
        !          1463: Lab,set up
        !          1464: unit
        !          1465: deviation,error
        !          1466: speed,si,direction,vector,average,displacement,physics,velocity
        !          1467: speed,average,position,displacement,physics,velocity
        !          1468: instantaneous,rate,physics,velocity
        !          1469: speed,noncalculus,instantaneous,calculus,velocity
        !          1470: slope,graphing,average,graphs,graph,velocity
        !          1471: kinematic
        !          1472: acceleration,graphs,constant,physics
        !          1473: acceleration,physics,velocity,kinematic
        !          1474: kinematic,kinematics,physics,velocity
        !          1475: digits,figuresw,digit,significant,units
        !          1476: unit,conversion
        !          1477: significant,figures
        !          1478: unit,conversion,km,hour,conversion
        !          1479: force,friction
        !          1480: science,sciences,physics,interconnections
        !          1481: unit,units
        !          1482: speeds,vertical,position,axis,graphs,displacement,horizontal
        !          1483: speed,nonconstant,plot,accelerate,acceleration,graphs
        !          1484: distance,speed,average
        !          1485: time
        !          1486: time
        !          1487: velocity
        !          1488: 
        !          1489: 
        !          1490: 
        !          1491: 
        !          1492: 
        !          1493: 
        !          1494: 
        !          1495: 
        !          1496: 
        !          1497: 
        !          1498: 
        !          1499: 
        !          1500: average,velocity
        !          1501: acceleration,velocity, time,speed,free,kinematics,fall
        !          1502: 
        !          1503: distance,place,speed,accelerating,acceleration,displacement,velocity
        !          1504: 
        !          1505: 
        !          1506: 
        !          1507: 
        !          1508: 
        !          1509: 
        !          1510: coulombs,forces,force
        !          1511: positive,forces,net,charge,coulomb,force,charges,symmetry,position
        !          1512: unit,units
        !          1513: dog,photo, picture, pictures, dogs, husky, shepard, sheperd
        !          1514: nucleotide,ribonucleoside,rna,dna,polymerase,nucleoside,transcription
        !          1515: km,unit,prefix,dimension,meters,cm,centimeters,units
        !          1516: forces,charge,force,charges
        !          1517: field,electric
        !          1518: magnitude,force
        !          1519: distance,charges
        !          1520: 
        !          1521: 
        !          1522: motion,trajectories,projectile,velocity
        !          1523: trigonometry,pythogoras
        !          1524: 
        !          1525: 
        !          1526: 
        !          1527: 
        !          1528: 
        !          1529: 
        !          1530: 
        !          1531: 
        !          1532: 
        !          1533: coordinate,cartesian,orthogonal,pythagoras
        !          1534: adding,vectors,vector
        !          1535: vectors,graphical,vector,angle
        !          1536: crossing,upstream,stream,cross
        !          1537: 
        !          1538: 
        !          1539: 
        !          1540: photosystem,act,reactions,light,photosynthesis
        !          1541: fluid,membranes,membrane,mosaic
        !          1542: fertilization,membranes,sperm,fertilize,membrane
        !          1543: fluid,mosaic,peripheral,protein,glycoproteins,membranes,structural,glycolipids,carbohydrates,integral,cholesterol,bilayer,embedded,lipid,proteins,phospholipids,membrane,phospholipid,carbohydrate
        !          1544: 
        !          1545: protein,polar,hydrophilic,structure,membranes,fabric,bilayer,phospholipids,membrane,phospholipid,hydrophobic,cytoplasm
        !          1546: 
        !          1547: fluidity,structural,glycolipids,saturated,integral,cholesterol,bilayer,membrane,hydrophobic,peripheral,glycoproteins,fluid,structure,membranes,functional,unsaturated,lipid,phospholipids,phospholipid
        !          1548: 
        !          1549: fluid,mosaic,sperm,structural,sperms,membrane,fertilization,membranes
        !          1550: glycoproteins,fluid,structure,glycolipids,functional,bilayer,phospholipids,membrane,phospholipid,mosaic
        !          1551: 
        !          1552: fluid,mosaic,transport,membrane,membranes
        !          1553: membranes,diffusion,membrane
        !          1554: gradient,membrane,reosmosis,concentration,membranes,diffusion,osmosis
        !          1555: channels,gradient,porin,gated,bilayer,hydrophobic,porins,hydrophilic,membranes,diffusion,osmosis
        !          1556: 
        !          1557: concentration,membranes,transport,active,gradient,facilitated,osmosis,passive,hydrolysis,membrane,hydrophobic
        !          1558: 
        !          1559: cotransport,transport,membrane,electrical,atp,electrochemical,concentration,membranes,potential
        !          1560: 
        !          1561: vectors,vector,component
        !          1562: components,distance,speed,xcomponent
        !          1563: motion,direction,vector,velocity
        !          1564: motion,projectiles,projectile
        !          1565: motion,trajectories,projectile
        !          1566: motion,muzzle,trajectories,projectile,cannon
        !          1567: 
        !          1568: direction,vectors,acceleration,component,distances,projectiles,projectile,velocity
        !          1569: 
        !          1570: unit,units
        !          1571: force
        !          1572: trajectory,height,range,projectile
        !          1573: 
        !          1574: masses,momentum,energy,newtons,force,kinetic,mass,external
        !          1575: momentum,forces,newtons,force,linear
        !          1576: momentum,forces,force,linear,conservation,external
        !          1577: masses,momentum,elastically,collisions,collide,kinetic,velocities,elastic,collision
        !          1578: 
        !          1579: momentum,energy,collisions,elastic,collision
        !          1580: objects,applet,mass,billiards,collision,velocity
        !          1581: colliding,momentum,stick,collisions,inelastic,totally,velocity
        !          1582: energy,sticks,height,conserved,impact,conversion,potential,inelastic,collision,velocity
        !          1583: 
        !          1584: centerofmass,center,momentum,motion,forces,newtons,force,vector,mass,law,external
        !          1585: 
        !          1586: centerofmass,center,momentum,motion,forces,force,mass,external,calculate,momenta
        !          1587: 
        !          1588: center,forces,rm,coordinate,mass
        !          1589: centerofmass,center,equilibrium,energy,motions,particles,potential
        !          1590: momentum,collisions,ineleastic,collision
        !          1591: circular,motion,chapter
        !          1592: motion,velocities,linear,velocity
        !          1593: angular,velocities,velocity,absolute
        !          1594: rotations,rotation,velocity,frequency
        !          1595: radial,radius,circular,centripetal
        !          1596: tangential,motion,angular,acceleration,vector,centripetal,velocity
        !          1597: gravitationally,gravitational,gravity,orbits,acceleration,gravitation,law,particles,newton
        !          1598: 
        !          1599: 
        !          1600: colliding,asteroids,astronomers,astronomical,asteroid,collision
        !          1601: angle,speed,escape
        !          1602: java,satellite,applet,vector,orbit,javaapplet,velocity
        !          1603: energy,circular,kinematics,centripetal,velocity
        !          1604: rotation,chapter
        !          1605: masses,motion,object,rotational,kinematic,objects,mass,rotating
        !          1606: torques,torque,force
        !          1607: equilibrium,torques,balance,rotational,rotation,weight
        !          1608: kg,torques,forces,force,rotational,mass
        !          1609: equilibrium,forces,neutral,force,stable,static,stability
        !          1610: moment,weights,aluminum,inertia,rotation,weight,frequency,moments
        !          1611: torques,angular,torque,acceleration,inertia
        !          1612: rotational,acceleration,rotation
        !          1613: energy,moment,work,rotational,translation,linear,wo,rotation,moments
        !          1614: momentum,angular,moment,torque,rotational,kinematic,vectors,vector,kinetic,rotation,velocity
        !          1615: 
        !          1616: system,momentum,angular,moment,spinning,gyroscopes,vector,conserved,precession,conservation,rotation,precesses,velocity
        !          1617: 
        !          1618: star,momentum,angular,moment,spherical,ro,sphere,inertia,conserved,rotating,rotation,io,velocity
        !          1619: 
        !          1620: momentum,angular,hoop,torque,rpm,conserved,rotating,rotation,velocity
        !          1621: momentum,torques,forces,rotational,acceleration,inertia,rotation,velocity,translational
        !          1622: 
        !          1623: momentum,energy,angular,moment,work,torque,rotational,kinetic,inertia,conservation,rotation
        !          1624: 
        !          1625: momentum,work,force,coefficient,friction,inelastic,collision,velocity
        !          1626: trajectory,angle,acceleration,velocity
        !          1627: forces,java,gravity,force,applet,beam
        !          1628: motion,angle,projectile,cannon,velocity
        !          1629: induction
        !          1630: 
        !          1631: current,field,faradays,section,emf,induced,magnitude,magnetic,coil,units
        !          1632: 
        !          1633: dimension
        !          1634: faradays,voltage,induced,da,area,magnetic
        !          1635: 
        !          1636: voltage,induction,energy,inductance,magnetic,coil,velocity
        !          1637: frequencies,beats,applet,hz,beat
        !          1638: simulation,impulse,friction,momentum,applet,conservation,billiards,billiard
        !          1639: wavelength,colors,blackbody,power,wavelengths,temperature,radiation,applet,spectrum
        !          1640: 
        !          1641: 
        !          1642: calculator
        !          1643: fissions,neutron,applet,fission,fishionable,explode
        !          1644: proton,java,orbits,orbit,electrons,applet,electron
        !          1645: oscillators,oscillations,energy,applet,waves
        !          1646: oscillator,oscillations,applet,velocity,frequency
        !          1647: atomic,applet,radioactive
        !          1648: doppler,speed,applet,sound,animation,velocity
        !          1649: float,diver,sink,archimedes,floats,applet
        !          1650: induction,applet,galvanometer,velocity
        !          1651: lens,light,lenses,combination,applet,optical,rays
        !          1652: gas,thermodynamic,temperature,applet
        !          1653: quark,quarks,antiquarks,applet
        !          1654: temperatures,orbit,sun,temperature,seasons,radiation,applet,solar,rays
        !          1655: shadows,applet,shadow
        !          1656: forces,friction,gravity,force,applet
        !          1657: significant,number,numbers,applet
        !          1658: frequencies,piano,applet,sound,notes
        !          1659: 
        !          1660: 
        !          1661: wavelength,applet,frequency
        !          1662: colors,color,mixed,mixing,applet
        !          1663: colors,color,intensity,applet
        !          1664: distance,time,trajectory,speed,tan
        !          1665: diameter,circular
        !          1666: atmosphere,solution,meters,meter
        !          1667: projectile,derivation
        !          1668: meters,newtons,force,area
        !          1669: force,area,torr
        !          1670: forces,mass,volume,gravity,force,alcohol
        !          1671: liter,diameter,viscosity,density,cm,liters
        !          1672: incompressible,units
        !          1673: density,archimedes,force
        !          1674: 
        !          1675: molecule,atom,atomic,avogadro,atomos,atoms,molecules,angstrom,classify
        !          1676: gas,forms,solid,phases,states,stars,state,liquid,liquids,squeeze,gases,aggregation,matter,ions,atoms,pressure,electrons,applet,solids,plasma
        !          1677: 
        !          1678: shape,gas,compress,solid,incompressible,distend,elastic,compressibility,gases,atoms,elastically,solids
        !          1679: 
        !          1680: steel,stress,volume,inelastic,deform,force,pressure,strain
        !          1681: tensile,stress,strain,compressed,compressional
        !          1682: youngs,stress,force,strain,modulus
        !          1683: youngs,rod,stress,stressed,stretched,force,strain,modulus,stretch,stressstrain
        !          1684: 
        !          1685: compress,stress,bulk,compressibility,squeeze,modulus
        !          1686: atmospheric,fluids,pascals,liquid,force,bar,pressure,fluid,stretch,atmospheres
        !          1687: 
        !          1688: forces,density,force,pressure,fluid
        !          1689: diving,atmosphere,pressure,divers,atmospheres
        !          1690: hydraulic,equilibrium,work,incompressible,pascals,pressure
        !          1691: hydraulic,cylinder,pump,force
        !          1692: acceleration
        !          1693: height,pressure,mercury,barometer,torricelli,weather
        !          1694: buoyed,density,buoyant,liquids,archimedes,pressure,dense,sinks,buoyancy,weight
        !          1695: 
        !          1696: volume,archimedes,force,buoyancy,weight
        !          1697: gas,float,density,liquid,buoyant,submerged,gravity,force,floats,fluid,displaced,floating
        !          1698: 
        !          1699: ice,density,gravity,floats,specific,floating,iceberg
        !          1700: density,buoyant,force
        !          1701: volumes,moving,viscosity,volume,eddies,cylinders,fluid,particles,viscous,velocity
        !          1702: 
        !          1703: work,flowing,flow,bernoullis,density,liquid,velocity
        !          1704: bernoullis,velocity
        !          1705: bernoulli,blood,flow,density,venturi,pressure,gauge,velocity
        !          1706: viscosity,blockages,artery,liquid,poiseuilles,pressure,velocity
        !          1707: turbulence,flow,capillary,turbulent,pressure,nonturbulent,reynolds,velocity
        !          1708: hydraulic,diver,flow,stress,density,liquid,submerged,liquids,force,pressure,strain,sinks,fluid,viscous,atmospheres
        !          1709: 
        !          1710: youngs,tensile,incompressible,flow,bernoullis,stress,fluids,bulk,pascals,archimedes,poiseuilles,pressure,strain,modulus,reynolds,pascal,compressional,solids,floating
        !          1711: 
        !          1712: gas,applet
        !          1713: temperature,chapter
        !          1714: equilibrium,forces,thermal,heating,heat,energy,temperature,flows
        !          1715: thermostats,wavelength,expansion,thermocouple,voltage,thermal,color,light,density,resistance,freezing,heat,pyrometer,unfrozen,chemoluminescence,temperature,bimetallic,thermometers,expand
        !          1716: 
        !          1717: temperatures,kelvin,fahrenheits,freezing,thermometer,degrees,fahrenheit,temperature,centigrade,celsius
        !          1718: 
        !          1719: gas,ideal,pv,law,laws,volume,thermodynamic,gases,temperature,pressure,thermodynamics
        !          1720: 
        !          1721: temperatures,moles,kelvin,volume,kelvins,liquids,thermometer,temperature,pressure,phase,applet
        !          1722: 
        !          1723: gas,ideal,moles,kelvin,constant,boltzmanns,co
        !          1724: expansion,work,strain,solids
        !          1725: impulses,gas,forces,impulse,momentum,gases,temperature,force,pressure,particles
        !          1726: 
        !          1727: gas,simulation,collisions,kinetic,molecules,temperature,applet
        !          1728: equilibrium,angular,kinetic,joules,boltzmanns,temperature,pressure,velocities,velocity
        !          1729: 
        !          1730: equilibrium,solid,ideal,atoms,molecules,temperature
        !          1731: gas,thermal,kelvin,boltzmanns,temperature
        !          1732: temperatures,collider,gluons,conductors,brookhaven,boseeinstein,explodes,temperature,accelerators,fission,superconductors,relativistic,volts,electron,bomb,explosion
        !          1733: 
        !          1734: degrees,temperature
        !          1735: gas,nitrogen,moles,atmospheres
        !          1736: molecule,ideal,temperature
        !          1737: thermal,gasoline,temperature
        !          1738: gas,kelvin,thermometer,temperature,pressure
        !          1739: gas,molecule,kinetic,solution,energy,speed,molecules
        !          1740: gas,ideal,moles,degrees,temperature,pressure
        !          1741: heat,chapter
        !          1742: kinetic,friction,heat,energy,temperature,latent,conservation
        !          1743: combustion,heat,gasoline,temperature
        !          1744: heat,temperature,specific,calorimetry
        !          1745: example,heat,tungsten,temperature,calorimetry
        !          1746: temperatures,equilibrium,heat,liquids,energy,gases,temperature,capacities,insulation,calorimetry
        !          1747: 
        !          1748: phases,heat,matter,molecules,temperature,electrons,phase,plasma,bonds
        !          1749: temperatures,solid,phases,melt,liquid,heat,energy,temperature,melting,water,phase,condensation
        !          1750: 
        !          1751: equilibrium,ice,thermal,melt,heat,icewater,temperature,melting,water,melts
        !          1752: electromagnetic,molecule,heat,fields,convection,molecules,water,conduction,radiation,contact
        !          1753: 
        !          1754: thermal,heat,conduct,atoms,temperature,conduction,solids
        !          1755: kelvin,temperature
        !          1756: temperatures,electromagnetic,blackbody,microwave,heat,temperature,applet,stefanboltzmann,spectrum
        !          1757: 
        !          1758: ice,kelvin,degree,heat,degrees,temperature,phase
        !          1759: 
        !          1760: thermal,vaporization,stefans,heat,mechanical,specific
        !          1761: emissivity,stefans,temperature,radiation
        !          1762: ice,melt,heating,liquid,heats,heat,temperature,water,latent
        !          1763: mass,vaporization,heat,vapor,temperature,water,latent
        !          1764: heat,energy
        !          1765: combustion,heat,energy
        !          1766: equilibrium,copper,temperature
        !          1767: heat,temperature,boil
        !          1768: watts,immersion,watt,joules,joule,temperature
        !          1769: equilibrium,heat,temperature
        !          1770: watt,stefans,tungsten,temperature
        !          1771: temperatures,work,flow,degree,heat,temperature
        !          1772: temperatures,thermal,heat,degrees,temperature
        !          1773: video,clip,melts
        !          1774: video,liquids,milk,clip,irreversible,processes,irreversibly,entropy,process
        !          1775: isotherm,gas,cylinder,isotherms,adiabat,video,engine,heat,cycle,carnotcycle,phase,carnot
        !          1776: 
        !          1777: work,absorbed,heat,energy,exhausts,exhausted,thermodynamics
        !          1778: temperatures,kelvin,heat,cycle,temperature,carnot
        !          1779: work,law,energy,thermodynamics
        !          1780: gas,work,solution,heat,isobaric,pressure,isobarically
        !          1781: engine,heat,cycle
        !          1782: heat,energy,temperature,entropy,process
        !          1783: work,ideal,engine,heat,efficiency,carnot,thermodynamics
        !          1784: work,thermodynamic,heat,energy,efficiency,thermodynamics
        !          1785: connected,coils,magnet,oscillate,video,coil
        !          1786: indicated,video,deflection,galvanometer,solenoid
        !          1787: video,faraday,deflection
        !          1788: galvanometer,faraday
        !          1789: video,galvanometer,faraday
        !          1790: galvanometer,faraday
        !          1791: galvanometer,faraday
        !          1792: currents,timevarying
        !          1793: voltage,sinusoidal,capacitors,currents,voltages
        !          1794: discharge,kirchhoffs,circuit,voltage,rc,resistor
        !          1795: voltage,rc,resistor,capacitor
        !          1796: lc,circuit,voltage,discharges,inductance,inductor
        !          1797: lc,circuit,discharges,oscillation,inductor,capacitor,frequency
        !          1798: lc,charge,circuit,voltage,oscillating,oscillation,capacitor
        !          1799: lc,discharges,inductor,capacitor
        !          1800: circuit,resistance,oscillation,inductance,circuits,harmonic
        !          1801: circuit,voltage,resistance,resistor,inductance,kirchhoffs,battery,potential
        !          1802: circuit,resistance,battery
        !          1803: factors,circuit,voltage,resistor,currents,ac,voltages,ohms,kirchhoffs,potential,alternating
        !          1804: 
        !          1805: sinusoidal,applet
        !          1806: sinusoidal,resistor,ac
        !          1807: dissipation,power,ac,voltage,resistor
        !          1808: voltage,resistance,inductance,ac,inductive,kirchhoffs,inductor,frequency
        !          1809: circuit,inductance,ac,inductive,inductor
        !          1810: emf,kirchhoffs,capacitor,ac,circuit,voltage
        !          1811: capacitative,capacitor,circuit,voltage
        !          1812: resonance,circuit,voltage,resistor,inductance,degrees,ac,voltages,inductive,capacitor,oscillates
        !          1813: 
        !          1814: voltage,sinusoidal,oscillations,voltages
        !          1815: resonance,circuit,resistance,resistor,capacitance,inductance,ac,inductive
        !          1816: voltage,impedance,ac,frequency
        !          1817: frequencies,twoway,circuit,loudspeakers,threeway,bass,signals,speaker,filter,signal,filters,capacitor,tweeter,frequency
        !          1818: 
        !          1819: transmission,coils,energy,electricity,ac,voltage,emf,transformers,transformer,power,volts,coil
        !          1820: 
        !          1821: circuit,voltage,digital,computers,analog,computer
        !          1822: transformer,transformers,coil
        !          1823: device,resonance,generator,voltage,impedance,transformer,power,resistor,ac,dissipated,capacitor,frequency
        !          1824: 
        !          1825: 
        !          1826: charge,charging,circuit,ohms,capacitor
        !          1827: charge,circuits,circuit,rc,capacitor
        !          1828: ohms,battery
        !          1829: capacitors,voltage,ohms,oscillator,impedance,frequency
        !          1830: capacitance,inductance,circuit,voltage,capacitive,ohms,impedance,resistance,frequency
        !          1831: 
        !          1832: microfarad,capacitive,inductive,inductor,capacitor,frequency
        !          1833: microfarad,impedance,hz
        !          1834: resonance,circuit,ohms,hz,frequency
        !          1835: resonance,circuit,voltage,ohms,impedance,inductor,volts,frequency
        !          1836: resonance,watts,circuit,dissipated,ohms,volts,frequency,resistor
        !          1837: capacitors,microfarad,resonance,inductive,resistors,capacitive,ohms,capacitances,volt,volts,inductances,frequency,resistor,inductors
        !          1838: 
        !          1839: microfarad,circuit,ohms,volts,frequency,resistor
        !          1840: oscilloscope,sinusoidally,applet,sinusoidal,physical,oscilloscopes
        !          1841: capacitance,applet,capacitor
        !          1842: capacitance,inductance,resonance,circuit,voltage,applet,resistance,frequency
        !          1843: 
        !          1844: 
        !          1845: momentum,recoil,thermal,toy,absorber,absorbes,radiometer
        !          1846: electromagnetic,waves
        !          1847: oscillation,field,fields,elctromagnetic,video
        !          1848: propagation,video,wave
        !          1849: maxwell,maxwells,waves,capacitor,displacement,magnetism
        !          1850: electromagnetic,wavelength,absorption,wave,momentum,energy,reflection,pressure,waves,frequency
        !          1851: 
        !          1852: maxwell,electromagnetic,field,wavelength,speed,refraction,propagation,vector,amplitudes,waves,magnetic,wave,physics,frequency,oscillations
        !          1853: 
        !          1854: oscillating,electromagnetic,dipole,waves,wave,harmonic
        !          1855: energy,field,efield,earths,sunlight,density
        !          1856: energy,electromagnetic,field,efield,bfield,em,magnetic,density,intensity
        !          1857: momentum,warmth,electromagnetic,force,skin,radiation,sunburn,sunlight,waves,wave,sunscreen,sun
        !          1858: 
        !          1859: energy,newtons,force,pressure,radiation,sunlight,flux
        !          1860: frequencies,microwaves,electromagnetic,wavelength,absorption,radiation,absorbed,radar,frequency,spectrum
        !          1861: 
        !          1862: trajectory,acceleration,velocity
        !          1863: instantaneous,acceleration,graph,accelerations
        !          1864: forces,balance,force,frictionless,components,acceleration,unbalanced,slides
        !          1865: reaction,opposite,action
        !          1866: inertia
        !          1867: 
        !          1868: kinetic,friction,incline,weight
        !          1869: heat,temperature,bimetal
        !          1870: gleichgewicht,thermisches
        !          1871: 
        !          1872: heat
        !          1873: waves,vibrations
        !          1874: pendulum,oscillation,force,waves,wave,vibrations,oscillates,oscillations
        !          1875: oscillating,oscillation,period,cycle,amplitude,periodic,displacement,frequency
        !          1876: 
        !          1877: oscillating,equilibrium,oscillators,stretched,oscillator,spring,harmonic
        !          1878: shm,oscillatory,motion,oscillation,period,phase,position,sinusoidal,displacement,frequency
        !          1879: 
        !          1880: oscillators,simulation,oscillator,amplitude,applet,spring,oscillations
        !          1881: oscillation,mass,spring,displacement
        !          1882: shm,pendulum,motion,period,pendulums,amplitude,acceleration,spring,harmonic,displacement,oscillations
        !          1883: 
        !          1884: pendulum,simulation,applet,harmonic
        !          1885: pendulum,oscillate,cycles
        !          1886: motion,phase,harmonic,displacement
        !          1887: shm,acceleration,harmonic,displacement,frequency
        !          1888: amplitude,harmonic,displacement
        !          1889: motion,oscillation,damping,damped,harmonic,displacement
        !          1890: oscillating,oscillators,motion,oscillator,amplitude,applet,video,sinusoidal,wave
        !          1891: 
        !          1892: vibrating,simulation,electromagnetic,wavelength,transverse,characteristics,amplitude,longitudinal,waves,wave,sound,frequency,oscillations
        !          1893: 
        !          1894: superposition,displacements,wavelength,interfering,phase,amplitude,waves,waveform,interference,interfere
        !          1895: 
        !          1896: constructive,applet,interference
        !          1897: constructive,superposition,destructive,wavelength,amplitude,amplitudes,waves,interference
        !          1898: 
        !          1899: diffraction,wavelength,diffracted,reflection,refraction,phase,reflected,waves,wave,light
        !          1900: 
        !          1901: frequencies,motion,oscillate,vibration,wavelength,periodic,waves,antinodes,frequency
        !          1902: 
        !          1903: strings,frequencies,guitar,vibration,wavelength,instrument,piano,violin,node,string
        !          1904: 
        !          1905: strings,frequencies,instrument,vibrate,instruments,video,harmonics,sound,string,harmonic,frequency
        !          1906: 
        !          1907: strings,frequencies,waves,wave,string
        !          1908: frequencies,harmonics,wave,string,hz
        !          1909: frequencies,superposition,fourier,fundamental,periodic,harmonics,waves,wave,harmonic,frequency
        !          1910: 
        !          1911: fourier,harmonics,wave
        !          1912: shm,pendulum,oscillating,proportional,wavelengths,amplitude,wave,string,harmonic,oscillates,frequency
        !          1913: 
        !          1914: pendulum,period,pendulums,video
        !          1915: shm,pendulum
        !          1916: pendulum,periods,period,acceleration,video
        !          1917: masses,simulation,transverse,waves,wave
        !          1918: overtones,oscillator,video,waves,string,frequency
        !          1919: shm,pendulum,frequencies,waves,wave,vibrations,harmonic,frequency
        !          1920: shm,oscillating,equilibrium,joules,energy,kinetic,spring,horizontal,velocity
        !          1921: 
        !          1922: frequencies,wavelength,standing,wave,frequency
        !          1923: angular,equilibium,displacement,frequency
        !          1924: shm,pendulum,period
        !          1925: vibrates,hz,frequency
        !          1926: ultrasonic,wavelength,echo,waves,wave,velocity,frequency
        !          1927: harmonic,displacement,oscillates
        !          1928: frictionless,amplitude,displaced,friction,spring,harmonic,displacement
        !          1929: shm,harmonic
        !          1930: energy,amplitude,waves,wave,frequency
        !          1931: frequencies,violinist,violin,hz,frequency
        !          1932: wavelength,waves,wave,hz,frequency
        !          1933: oscillation,maxima,minima,harmonic
        !          1934: 
        !          1935: sound
        !          1936: strings,sonar,ultrasound,transverse,longitudinal,waves,wave,light,sound,string
        !          1937: 
        !          1938: frequencies,molecule,force,pressure,sine,drums,sinusoidal,waves,wave,sound,ear,velocity
        !          1939: 
        !          1940: youngs,speed,temperature,fluid,waves,wave,sound,string,air
        !          1941: speed,thunderstorm,video,sound,thunder
        !          1942: football,speed,quarterback,sound
        !          1943: wavelength,speed,fundamental,node,wave,sound,antinodes,hz,frequency
        !          1944: sounds,wavelength,pressure,absorption,source,amplitude,power,wave,sound,intensity,frequency
        !          1945: 
        !          1946: graham,logarithmic,logarithm,vibrate,alexander,amplitude,bell,intensities,waves,sound,intensity
        !          1947: 
        !          1948: frequencies,human,threshold,db,sound,volume,intensity,frequency
        !          1949: threshold,db,sound,intensity
        !          1950: threshold,db,intensities,sound,music,intensity
        !          1951: frequencies,sounds,wavelength,temperature,wave,sound,music,hz
        !          1952: sinusoidal,waves,wave,sound,interference
        !          1953: frequencies,waves,wave,interference,speakers,frequency
        !          1954: frequencies,beats,amplitude,waves,frequency
        !          1955: doppler,wave,compressions,sound,frequency
        !          1956: doppler,speed,velocities,sound,velocity,frequency
        !          1957: speed,echo,sound,hz,velocity,frequency
        !          1958: tornados,thunderstorms,doppler,speed,satellite,thunderstorm,radiation,waves,weather,velocity,frequency
        !          1959: 
        !          1960: speeds,speed,sonic,waves,wave,sound,velocity,frequency
        !          1961: strings,pipe,frequencies,wavelength,instrument,speed,node,instruments,pipes,harmonics,waves,sound,string,antinodes,frequency
        !          1962: 
        !          1963: pipe,speed,fundamental,beats,pipes,organ,sound,hz,frequency
        !          1964: frequencies,sebastian,keys,human,tonal,piano,tone,soprano,halftones,musical,bach,tones,bass,baritone,note,sound,johann,notes,key,hz,klavier,frequency,intervals,wohltemperierte
        !          1965: 
        !          1966: pipe,decibel,doppler,transverse,speed,db,intensities,waves,wave,organ,sound,intensity,velocity,frequency
        !          1967: 
        !          1968: pipe,frequencies,wavelength,doppler,db,velocities,wave,organ,sound,intensity,velocity
        !          1969: 
        !          1970: intensities,power,sound,intensity
        !          1971: wavelength,waves,sound,interference,interfere,hz,frequency
        !          1972: doppler,sound,hz,velocity,frequency
        !          1973: pipe,resonant,temperature,velocities,organ,hz,frequency
        !          1974: vibration,youngs,wavelength,fundamental,modulus,wave,density,sound,velocity,frequency
        !          1975: 
        !          1976: sounds,youngs,speed,modulus,sound,velocity
        !          1977: temperature,pressure,modulus,bulk,sound
        !          1978: pipe,fork,fundamental,beats,organ,beat,velocity,frequency
        !          1979: degrees,temperature,sound,celsius
        !          1980: 
        !          1981: demo,oscilloscope,microphone,pressure,video,sinusoidal,waves,wave,sound
        !          1982: oscilloscope,xylophone,microphone,beats,beating,video,sinusoidal,hz
        !          1983: doppler,honking,car,video,velocity,frequency
        !          1984: exams,practice
        !          1985: telescope,telescopes,microscope,object,microscopes,diameter,objective,visual,magnification
        !          1986: 
        !          1987: 
        !          1988: unit,wavelength,want,proton,speed,subatomic,angstrom,bohr,electronvolt,electron
        !          1989: 
        !          1990: kg,system,micro,years,unit,length,kilogram,metric,days,nano,si,standard,meter,day,definition,wave,kilo,milli,units,oscillations
        !          1991: 
        !          1992: derivation,proof
        !          1993: free,time,fall
        !          1994: swimmer,swimmers,swim
        !          1995: ball,speed,soccer,fell,free,falls,fall
        !          1996: simulation,resistance,velocity
        !          1997: derivation,proof
        !          1998: forces,rope,newtons,speed,force,tension,mass,pulley
        !          1999: forces,gravity,force,weight
        !          2000: gravitational,speed,force,frictionless,inclined,plane,velocity
        !          2001: gravity,newtons,force,acceleration,kinetic,friction,velocity,terminal,falling
        !          2002: 
        !          2003: trigonometry,sin,degrees,force,cos,sine,cosine,triangle
        !          2004: fightsong,white,spartan,green,spartans
        !          2005: forces,force,acceleration,coefficient,velocity
        !          2006: capacitors,energy,capacitance,electricity,speed,electrostatic,force,circuit,conductors,resistors,voltage,dissipated,electric,insulators,galvanometer,magnetic,resistances,dielectric,capacitor,coil,resistance,resistor
        !          2007: 
        !          2008: masses,kg,deformation,frictional,forces,energy,youngs,gravitational,gravity,newtons,speed,days,satellite,bullet,temperature,force,modulus,acceleration,orbit,kinetic,mass,bullets,day,centripetal,resistance,velocity,curve
        !          2009: 
        !          2010: diopter,energy,field,polarizers,wavelength,fields,microfarads,speed,resonance,force,voltage,dissipated,ohms,concave,magnifying,magnetic,power,wave,volts,curvature,hz,polarized,exam,electron,velocity,frequency,magnification,solenoid
        !          2011: 
        !          2012: 
        !          2013: work,force,displacement
        !          2014: equilibrium,forces,energy,stretched,compress,work,force,stretching,compressed,compresses,acceleration,storing,stored,spring,stores,displacement,velocity
        !          2015: 
        !          2016: pendulum,kg,energy,gravitational,work,speed,force,accelerate,nonconservative,compressed,kinetic,power,swing,spring,inclined,potential,compression
        !          2017: 
        !          2018: 
        !          2019: 
        !          2020: 
        !          2021: 
        !          2022: 
        !          2023: 
        !          2024: pendulum,swings,energy,speed,pe,te,kinetic,potential
        !          2025: ball,energy,ramp,balls,kinetic,video,potential,inclines,roll
        !          2026: pendulum,energy,video,conserved,conservation,velocity
        !          2027: derivation
        !          2028: kg,angle,energy,height,work,gravity,mass,potential
        !          2029: momentum,carts,gun,powder,gunpowder,collide,video,bounce,conserved,explodes,explosion
        !          2030: 
        !          2031: gunpowder,video
        !          2032: collisions,video,cart,videos
        !          2033: ball,oscillation,period,balls,video
        !          2034: ball,billard,collisions,balls,video,billiard,videos,collision
        !          2035: carts,speed,collisions,video,cart,collision
        !          2036: pendulum,energy,ballistic,bullet,kinetic,video,potential,inelastic,collision
        !          2037: 
        !          2038: wrench,parabola,balance,clip,video
        !          2039: derivation,proof
        !          2040: derivation,proof
        !          2041: derivation,proof
        !          2042: thermodynamics
        !          2043: heat,energy,law,laws,entropy,conservation,thermodynamics
        !          2044: definitions,heat,boundary,system,bath,eos,irreversible,reservoir,capacity,thermodynamic,thermodynamics,boundaries,temperature,process
        !          2045: 
        !          2046: gas,isometric,helmholtz,energy,law,hermann,isobaric,volume,conservation,adiabatic,thermodynamic,thermodynamics,temperature,pressure,isothermal
        !          2047: 
        !          2048: gas,heat,isometric,energy,isobaric,work,volume,ideal,adiabatic,thermodynamic,thermodynamics,temperature,pressure,isothermal
        !          2049: 
        !          2050: gas,compresses,cylinder,piston,work,volume,displacement,force
        !          2051: gas,piston,work,volume,displacement,force
        !          2052: gas,isobar,isobaric,processes,work,ideal,process
        !          2053: gas,heat,isobaric,processes,pressure,process
        !          2054: heat,energy,boil,latent,isobaric,piston,work,volume,steam,thermodynamics,temperature,pressure
        !          2055: 
        !          2056: gas,heat,bath,energy,reservoir,work,volume,ideal,capacity,temperature,isothermal,process
        !          2057: 
        !          2058: gas,expansion,work,volume,ideal,compression,temperature,isothermal
        !          2059: gas,expansion,work,volume,ideal,compression,isothermal
        !          2060: heat,isometric,work,process
        !          2061: heat,isometric,work,volume,excitation,process
        !          2062: thermal,heat,processes,work,engine,combustion,adiabatic,process
        !          2063: isotherm,gas,specific,gases,volume,ideal,adiabatic,monoatomic,pressure,heats,isothermal,process,adiabat
        !          2064: 
        !          2065: gas,heat,free,equilibrium,insulated,vacuum,energy,expansion,processes,work,ideal,temperature,thermally,process,expand
        !          2066: 
        !          2067: heat,equilibrium,helmholtz,energy,engineering,work,criminals,crackpots,efficiency,joule,molecules,temperature,perpetual,mobile,inventors,thermal,fools,law,carnot,perpetuum,entropy,engine,conservation,relativity,thermodynamics,patent
        !          2068: 
        !          2069: heat,cycle,reservoir,work,engine,efficiency,thermodynamics,temperature,engines,cycles
        !          2070: 
        !          2071: heat,joules,bath,kinetic,colder,refrigerator,warmer,refrigerators,reservoir,work,cooler,cool,joule,temperature,engines,warm
        !          2072: 
        !          2073: isotherm,temperatures,refrigerator,cycle,work,performance,adiabatic,efficiency,temperature,adiabat,carnot,processes,engine,isothermal,process
        !          2074: 
        !          2075: temperatures,turbine,cycle,boiler,efficiency,turbines,carnot,power,engine,steam,condenser,thermodynamics
        !          2076: 
        !          2077: heat,cycle,adiabatic,efficiency,carnot,reversible,processes,entropy,cycles
        !          2078: equilibrium,irreversible,reversible,processes,entropy,process
        !          2079: gas,expansion,ideal,temperature,spontaneously,si,free,irreversible,reversible,entropy,volume,isothermal
        !          2080: 
        !          2081: masses,temperatures,heat,equilibrium,hotter,temperature,capacities,conduction,specific,mass,calorimetry,irreversible,reservoir,reversibly,entropy,capacity,process
        !          2082: 
        !          2083: masses,temperatures,heat,equilibrium,insulated,temperature,thermal,specific,mass,entropy,heats
        !          2084: 
        !          2085: gas,expansion,ideal,moles,free,entropy,expands,volume,process
        !          2086: equilibrium,energy,spontaneously,processes,entropy,subsystem,thermodynamic,thermodynamics,process
        !          2087: 
        !          2088: gas,temperatures,heat,isothemal,equilibrium,energy,isobaric,cycle,expansion,work,ideal,adiabatic,pump,temperature,irreversible,reversible,cooled,entropy,thermodynamic,thermodynamics
        !          2089: 
        !          2090: gas,heat,isometric,refrigerator,isobaric,cycle,work,ideal,adiabatic,efficiency,coefficient,carnot,entropy,engine,thermodynamics,isothermal,process
        !          2091: 
        !          2092: temperatures,survive,characteristic,grows,traits,lifetime,offspring,organisms,characteristics
        !          2093: 
        !          2094: 
        !          2095: charge,charging,friction
        !          2096: 
        !          2097: angle,field,charge,permittivity,force,efield,electric,direction,vector,charges,medium
        !          2098: 
        !          2099: compute,field,work,computations,speed,lines,applet,computer
        !          2100: coulombs,field,net,charge,permittivity,force,gauss,flow,electrostatics,direction,flux,medium
        !          2101: 
        !          2102: coulombs,field,equivalent,pe,permittivity,electric,magnitude,vector,flux,medium
        !          2103: 
        !          2104: coulombs,capacitance,charge,microfarads,voltage,flows,uncharged,volts,battery,capacitor
        !          2105: 
        !          2106: capacitance,parallel,plate,plates,area,capacity,capacitor
        !          2107: energy,capacitance,charge,charged,capacitor,microcoulomb
        !          2108: gap,plate,plates,voltage,volts,dielectric,capacitor
        !          2109: gap,energy,capacitance,field,parallel,disks,electric,charged,battery,capacitor
        !          2110: 
        !          2111: capacitors,capacitance,series
        !          2112: capacitors,capacitance,parallel,capacitances
        !          2113: series,capacitors,capacitance,parallel,capacitor
        !          2114: 
        !          2115: 
        !          2116: conduct,charge,semiconductors,electricity,conductors,electrons,conduction,electric,discharge,charged,conductor,insulators,insulator,conductivity,electronics,resistance,discharged
        !          2117: 
        !          2118: coulombs,charge,coulomb,permittivity,force,electrostatics,isolated,electron
        !          2119: field,charge,parallel,gauss,electric,direction,vectors,vector,fluxes,area,law,perpendicular,flux
        !          2120: 
        !          2121: repulsion,field,charge,inducing,diverging,metallic,electrostatic,shielded,generator,franklins,conducting,metal,shielding,gauss,electrons,gaussian,electric,tall,induced,magnitude,insulating,de,induces,charged,conductor,law,electroscope,uncharged,surface,flux,faraday,divergence
        !          2122: 
        !          2123: field,charge,metallic,permittivity,force,metal,gauss,gaussian,electric,conductor,charges,flux
        !          2124: 
        !          2125: field,charge,metal,gauss,electrostatics,electric,sphere,density
        !          2126: repelled,energy,repulsion,field,work,pe,electrostatic,force,electric,potential,displacement
        !          2127: 
        !          2128: energy,charge,potential
        !          2129: energy,field,charge,work,force,electrical,electric,charges,potential
        !          2130: energy,field,charge,work,force,accelerate,kinetic,constant,potential
        !          2131: electric,conductor,energy,field,volt,charge,coulomb,energies,work,electronvolt,potential,electrostatic,force,electron
        !          2132: 
        !          2133: energy,proton,atom,hydrogen,position,potential,electron,nucleus
        !          2134: superposition,charge,coulomb,energies,electrostatic,permittivity,electric,charges,potential,scalar
        !          2135: 
        !          2136: charges,potentials,energy,charge,positions,potential
        !          2137: line,energy,surfaces,field,charge,radial,work,electrostatic,force,lines,radius,electric,equipotential,concentric,acceleration,equipotentials,charges,perpendicular,surface,potential,circles
        !          2138: 
        !          2139: leakage,clouds,field,charge,fields,ions,force,lines,lightning,conductors,electrons,neutralizes,flow,electric,equipotential,charged,conductor,atmosphere,charges,friction,insulator,dielectric,air,ionization,potential,cloud,electron
        !          2140: 
        !          2141: surfaces,field,charge,gravitational,work,gravity,electric,dipole,equipotential,equipotentials,perpendicular,surface,potential,uniform
        !          2142: 
        !          2143: electrostatics
        !          2144: field,charge,electrostatic,plot,applet,charges,potentials,potential
        !          2145: energy,field,charge,work,electrostatic,force,gauss,electric,charged,charges,er,surface,potential
        !          2146: 
        !          2147: tubes,picture,video,beam,electron
        !          2148: tubes,picture,plates,deflection,tv,video,beam,electron
        !          2149: hair,charge,charging,generator,video,friction
        !          2150: repelled,charge,conducting,metal,shielding,charged,video,insulator,graaff,van
        !          2151: 
        !          2152: faradays,generator,gauss,lightning,voltage,sparks,video,graaff,van
        !          2153: charge,recoil,generator,electric,sparks,discharge,conductor,graaff,van
        !          2154: momentum,charge,recoil,generator,electric,sparks,discharge,conductor,video,graaff,van
        !          2155: 
        !          2156: capacitance,charge,permittivity,conducting,spherical,radius,conductor,sphere,isolated,surface,potential
        !          2157: 
        !          2158: capacitance,grounded,charge,infinity,permittivity,concentric
        !          2159: capacitors
        !          2160: capacitors,dielectrics,energy,capacitance,charge,permittivity,charged,dielectric,battery,potential,capacitor
        !          2161: 
        !          2162: capacitors,energy,capacitance,coulomb,capacitiance,farad,sphere,volt,stored,dielectric,capacitor,spheres
        !          2163: 
        !          2164: 
        !          2165: lenses,mirrors
        !          2166: angle,outgoing,incoming,angles,reflection
        !          2167: mendel,inheritance, genetic,genetics,mendels
        !          2168: alleles,genetics,inheritance,mendel,mendels,genetic,gregor,inherited
        !          2169: pisum,genetics,inheritance,mendel,independent,genetic,gregor,pea,sativum
        !          2170: homologs,chromosome,diploidy,genetic,gregor,homologous,mendel,haploid,diploid
        !          2171: 
        !          2172: sister,chromatids,mendel,haploid,inheritence,inheritance,meiosis,chromosome,dyad,gregor
        !          2173: 
        !          2174: mendel,meiosis,chromosome,gregor,segregation
        !          2175: genetics,mendel,punnett,allele,square,genetic,gregor
        !          2176: 
        !          2177: 
        !          2178: forces,force,vector
        !          2179: resistivity,temperatures,dependence,temperature,resistance
        !          2180: parallel,resistors,voltage,resistances,potential,resistance
        !          2181: galvanometer,currents,circuits
        !          2182: nuclear,physics
        !          2183: positive,protons,charge,electrostatic,negatively,electrons,conduction,electric,charged,conductor,static,negative,uncharged,positively,electrically,electron
        !          2184: 
        !          2185: charge,proton
        !          2186: appendix
        !          2187: magnetism
        !          2188: field,charge,fields,vectors,vector,charges,magnetic,lorentz
        !          2189: field,charge,charged,magnetic,lorentz
        !          2190: vectors,components,acceleration,vector,component,velocity
        !          2191: energy,work,kinetic
        !          2192: work,force,displacement
        !          2193: kg,heat,energy,weights,work,gravity,speed,temperature,vectors,vector,mass,thermodynamics,weight
        !          2194: 
        !          2195: forces,work,force,vector,kinetic,coefficient,friction,velocity
        !          2196: gas,expansion,ideal,adiabatic
        !          2197: energy,superconducting,inductor,inductance,solenoid
        !          2198: angle,force,electrons,magnitude,magnetic,lorentz,electron,velocity
        !          2199: field,charge,force,magnitude,lorenz,lorentz,electron,velocity
        !          2200: trajectory,field,ions,force,mass,centrifugal,lorentz,electron
        !          2201: field,magnetic
        !          2202: currents,force
        !          2203: toroids,field,toroid,solenoids,magnetic,solenoid,toroidal
        !          2204: torques,field,moment,torque,moments
        !          2205: field,magnitudes,work,wire,flow,vectors,magnetic
        !          2206: needle,magnets,magnetic,needles
        !          2207: circular,orbit,video,particle,beam,electron
        !          2208: orbit,video,magnetic,particle,beam,electron
        !          2209: magnet,field,compass,video,magnetic
        !          2210: ki,sliding,energy,work,techniques,dynamics,kinematics,coefficient,friction,slides
        !          2211: 
        !          2212: elementary,particle,physics
        !          2213: instruments,optical
        !          2214: equilibrium,energy,length,store,height,work,gravity,joule,position,spring,potential,displacement
        !          2215: 
        !          2216: heat,momentum,energy,conserved,baryon,conservation,thermodynamics
        !          2217: glasses,diopter,farsighted,virtual,eye,mirror,lens,focus,lenses,inverse,image
        !          2218: 
        !          2219: heat,forces,energy,conservative,work,force,nonconservative,applet,friction,conservation
        !          2220: 
        !          2221: myopia,length,elongated,nearsightedness,microscope,eye,magnifications,eyeball,focal,inverted,lens,camera,lenses,muscles,magnification
        !          2222: 
        !          2223: forces,energy,energies,conservative,gravity,mechanical,kinetic,conservation,potential
        !          2224: 
        !          2225: barrel,virtual,microscope,object,ocular,objective,image,optical
        !          2226: addition,classical
        !          2227: hole,gravity,holes,hawking,black
        !          2228: up,down, strange, charm, bottom, 
        !          2229: top,quark,quarks,proton,neutron,fermilab,particle,particles,antiquarks
        !          2230: universe,galaxies,shift,red,frequency
        !          2231: relativity
        !          2232: joules,energy,pounder,grams,burger
        !          2233: 
        !          2234: 
        !          2235: 
        !          2236: 
        !          2237: 
        !          2238: 
        !          2239: 
        !          2240: 
        !          2241: 
        !          2242: 
        !          2243: 
        !          2244: 
        !          2245: origins,theory,quantum
        !          2246: diffraction,momentum,electromagnetic,quanta,body,newtonian,states,electrons,quantized,radiation,position,black,atomic,simultaneously,quantization,quantum
        !          2247: 
        !          2248: temperatures,electromagnetic,pyrometer,wavelength,ultraviolet,infrared,catastrophe,body,wiens,black,displacement,spectrum,divergence
        !          2249: 
        !          2250: wiens,black,law,temperature,body
        !          2251: photons,oscillators,electromagnetic,quanta,ultraviolet,body,quantized,radiation,oscillator,black,quantization,hz,plancks
        !          2252: 
        !          2253: einstein,electromagnetic,ultraviolet,einsteins,circuit,electron,electrons
        !          2254: photoelectric,photocurrent,voltages,electrons,voltage,photon,frequency
        !          2255: photons,diffraction,bremsstrahlung,electromagnetic,wavelength,atoms,roentgens,voltage,roentgen,radiation,photon,atomic,electron
        !          2256: 
        !          2257: energy,electromagnetic,ray,electrons,kinematic,radiation,photon,compton,xray,xrays
        !          2258: 
        !          2259: diffract,wavelength,electrons,de,wavelike,broglie,waves,wave,electron
        !          2260: photons,energy,wavelength,wavelengths,electrons,kinetic,photon,electron,nonrelativistic
        !          2261: 
        !          2262: momentum,uncertainties,heisenberg,plancks,uncertainty
        !          2263: photons,antiproton,antiparticle,protons,proton,accelerator,collisions,chamberlain,accelerators,annihilation,collide,antiprotons,particle,relativity,antiparticles,annihilate
        !          2264: 
        !          2265: photons,photoelectric,energy,proton,body,electrons,black,photon,compton,electron,frequency,spectrum
        !          2266: 
        !          2267: wavelength,photon
        !          2268: photoelectric,wavelength,electrons,light
        !          2269: monochromatic,wavelength,shift,light,compton,electron
        !          2270: momentum,wavelength,proton,de,broglie
        !          2271: principle,heisenberg,uncertainty
        !          2272: principle,heisenberg,uncertainty
        !          2273: mass,photon,particle,electron,annihilate,frequency
        !          2274: radius,atom,hydrogen,bohr,level
        !          2275: energy,atom,hydrogen,bohr,level,ev
        !          2276: energy,wavelength,subatomic,atom,radiation,hydrogen,bohr,ev,electron
        !          2277: atom,hydrogen,bohr,level,electron
        !          2278: mechanics,atom,hydrogen,quantum,electron
        !          2279: energy,atom,hydrogen,bohr,level,ev,photon,electron
        !          2280: photoelectric,photocurrent,wavelength,wavelengths,applet,cesium
        !          2281: oscillating,hertz,wavelength,wavelengths,heinrich,radiating,radiation,dipole,frequency
        !          2282: 
        !          2283: lt,electromagnetic,length,wavelength,ac,voltage,amplitude,magnetic,wave,polaroids,capacitor,oscillates
        !          2284: 
        !          2285: wavelength,waves,hz,frequency
        !          2286: laser,light
        !          2287: joules,energy,reflector,pressure,laser,radiation,light,intensity
        !          2288: length,wavelength,mhz,radio,antenna,antennas,station,fm,light,hz,frequency
        !          2289: polarization,polarizers,light,polaroids,polarized,beam,polarizer,intensity
        !          2290: energy,field,sunlight,asteroid
        !          2291: polarization,polarizers,unpolarized,light,polarized,polarizer
        !          2292: orientation,polarization,polarizers,photometer,applet,polarimeters,polarizer,optical,rays
        !          2293: 
        !          2294: photoelectric,hertz,electromagnetic,duality,waveparticle,quanta,young,ray,planck,einstein,isaac,waves,wave,newton,huygens,quantum
        !          2295: 
        !          2296: aerobic,anaerobic,metabolism,glycolysis,respiration
        !          2297: mitochondrion,transport,cycle,mitochondria,krebs,chain,electron,respiration
        !          2298: anaerobic,fermentation,glycolysis,respiration
        !          2299: respiration,glucose,fermentation,glycolysis
        !          2300: fermentation,break, down,glucose,glycolysis,respiration
        !          2301: respiration,glucose,atp,nadh,glycolysis,nad
        !          2302: exercise,glycolysis,respiration
        !          2303: phosphates,excercise,glycolysis,respiration
        !          2304: atp,glycolysis,respiration
        !          2305: anaerobic,co,fermentation,pyruvate,alcohol,nadh,glycolysis,nad,respiration
        !          2306: respiration,aerobic,anaerobic,fermentation,glycolysis
        !          2307: motion,forces,newtons,body,force,directions,direction,vectors,components,acceleration,vector,freebody,law
        !          2308: 
        !          2309: motion,force,newtonian,acceleration,mass,newton
        !          2310: vectors,subtraction
        !          2311: 
        !          2312: velocity,graph
        !          2313: acceleration,graph
        !          2314: vectors
        !          2315: 
        !          2316: 
        !          2317: trajectory
        !          2318: velocity
        !          2319: position,vector
        !          2320: 
        !          2321: 
        !          2322: 
        !          2323: velocity,components
        !          2324: vectors
        !          2325: 
        !          2326: resultant,vector
        !          2327: vector,addition
        !          2328: 
        !          2329: 
        !          2330: vector,addition
        !          2331: 
        !          2332: 
        !          2333: trajectory
        !          2334: direction,vector
        !          2335: gravity,diagram,diagrams,balanced,freebody,unbalanced,weight
        !          2336: forces,net,force,vectors,vector
        !          2337: forces,distance,net,gravity,electrostatic,force,act,attraction
        !          2338: motion,forces,newtons,force,galileo,inertia,mass,law,friction,newton,velocity
        !          2339: 
        !          2340: forces,newtons,force,velocity
        !          2341: forces,force,vectors,components,vector,component
        !          2342: net,newtons,force,accelerate,direction,acceleration,mass,netforce
        !          2343: kg,force,si,acceleration,dimensional,newton,dimensionality,weigh,weight,velocity
        !          2344: 
        !          2345: 
        !          2346: hydraulic,force,fluids,buoyant
        !          2347: 
        !          2348: 
        !          2349: 
        !          2350: 
        !          2351: 
        !          2352: 
        !          2353: 
        !          2354: megaton,kg,gal,energy,unit,length,lightyear,kmh,force,pressure,atm,cm,cal,btu,ev,power,ft,mpa,volume,conversion,hp,kwh,velocity,units
        !          2355: 
        !          2356: powers,power
        !          2357: speed,temperature,force,mileshour,displacement,velocity
        !          2358: magnitude,vectors,vector,crossproduct,perpendicular,scalar
        !          2359: products,orthonormal,unit,length,coordinate,vectors,vector,cartesian,orthogonal,scalar
        !          2360: 
        !          2361: impurities,forces,electricity,force,electrons,electric,insulators,dielectric
        !          2362: 
        !          2363: polynomial,logarithm,chain,exponential,derivative,calculus
        !          2364: circle,cylinder,height,geometry,radius,circumference,area,sphere,rectangle,volume,surface,square,sides
        !          2365: 
        !          2366: length,applet,area,scalar,skalarprodukt,projection
        !          2367: angle,vectors,vector,vektorprodukt
        !          2368: ionic,molecule,atom,hydrogen,element,chemical,compound,covalent,bond
        !          2369: charge,molecule,electrons,atom
        !          2370: element,atom,polar,gains,positive,shared,unequal,negative,charge,molecule,amount,molecules,electron,water,electrons
        !          2371: 
        !          2372: 
        !          2373: submerged,newtons,tension,convert,displaces,density,liquid,units
        !          2374: graphs,graph
        !          2375: bumper,gravity,pasco,accelerate,acceleration,cart,friction
        !          2376: friction,velocity
        !          2377: acceleration,friction,ramp,force,coefficient,weight
        !          2378: acceleration,mass,law,hookes,gravity,force,spring,harmonic,frequency
        !          2379: period,spring,oscillates,frequency
        !          2380: tension,wave,harmonic,frequency
        !          2381: kinetic,coefficient,friction,gravity,force
        !          2382: kinetic,energy,potential
        !          2383: kinetic,energy
        !          2384: gravity,acceleration,resistance,velocity,terminal,falling
        !          2385: air,resistance,velocity,terminal
        !          2386: carts,coefficient,cart,friction,inelastic,collision
        !          2387: carts,speed,collide,velocities,cart,collision,velocity
        !          2388: tension,string,pendulum
        !          2389: string,pendulum
        !          2390: angular,force,rotational,inertia,centripetal,velocity
        !          2391: moment,inertia,rotates,rotating
        !          2392: ice,temperature,water
        !          2393: joules,energy,calorie
        !          2394: submerged,force,weight,buoyant
        !          2395: 
        !          2396: deviation,measured,estimates,measure,accuracy,error,standard,analysis,measurement,measurements,variance,mean
        !          2397: 
        !          2398: addition,approximation,error,additions
        !          2399: average,velocity
        !          2400: distance
        !          2401: speed,average
        !          2402: acceleration,average
        !          2403: speed,vectors,orthogonal
        !          2404: velocity,relative
        !          2405: acceleration,velocity
        !          2406: projectile,velocity
        !          2407: angle,balls,baseball,projectile,velocity
        !          2408: maximum,range,velocity
        !          2409: angle,vector
        !          2410: trigonometry,angle,degrees,vectors,vector,velocity
        !          2411: vectors,vector,angle,angles
        !          2412: charge,coulomb,field,force,electric
        !          2413: field,electric
        !          2414: forces,distance,field,charge,fields,electric,vector,charges
        !          2415: electric,charged,sphere,field,charge
        !          2416: folded,field,electric,panels,flux,uniform,panel
        !          2417: field,charge,coulomb,force,electric,charges,potentials,potential,microcoulomb
        !          2418: 
        !          2419: scalars,charges,potentials,potential
        !          2420: electric,energy,field,charge,work
        !          2421: energy,field,charge,work,accelerating,electric,vector,displacement
        !          2422: approximate,angle,slit,interference
        !          2423: monochromatic,wavelength,reflection,refraction,reflected,transmitted,thickness,beam
        !          2424: 
        !          2425: 
        !          2426: electromagnetic,phenomena,polarization,field,optics,apertures,phases,electric,phenomenon,amplitude,waves,magnetic,patterns,interference,mirrors,frequency
        !          2427: 
        !          2428: constructively,superimposing,amplitude,wave,interference,interfere,constructive,destructive,superimposed,waves,frequency
        !          2429: 
        !          2430: constructive,slits,destructive,wavelength,young,phase,coherent,slit,bulb,waves,wave,light,interference
        !          2431: 
        !          2432: phase,waves,light,interfere
        !          2433: wavelength,wavelengths,radiation,destructively,interfere,frequency
        !          2434: constructive,line,destructive,wavelength,interference
        !          2435: pattern,slits,wavelength,double,slit,interference
        !          2436: monochromatic,bubbles,wavelength,reflection,refraction,colors,ray,reflected,interference
        !          2437: 
        !          2438: thin,interference,film,coating
        !          2439: coatings,wavelength,reflecting,wavelengths,coat,refraction,reflected,photograph,transmitted,lens,lenses,reflections,binocular,glass,coating
        !          2440: 
        !          2441: thin,wavelength,refraction,constructively,lens,wave,light,interference,interfere,constructive,reflect,destructive,wavelengths,reflected,film,glass
        !          2442: 
        !          2443: interferometer,electromagnetic,wavelength,mirror,interferometers,michelson,waves,ether
        !          2444: 
        !          2445: monochromatic,maximum,superposition,diffraction,integer,slits,maxima,length,wavelength,lines,slit,waves,light,interference,glass
        !          2446: 
        !          2447: diffraction,length,wavelength,slit,wave,light,intensity
        !          2448: aperture,diffraction,slits,photographs,apertures,lens
        !          2449: lens,aberrations
        !          2450: transmission,polarization,unpolarized,transmitted,waves,polarizations,intensity
        !          2451: 
        !          2452: polarization,polarizers,rotated,polarized,polarizer,intensity
        !          2453: pattern,diffraction,slits,reflector,wavelength,apertures,act,slit,patterns,wave,polarizer
        !          2454: 
        !          2455: maximum,slits,maxima,wavelength,double,slit
        !          2456: maxima,wavelength,minima,wavelengths,ray,slit
        !          2457: constuctive,maximum,thin,refraction,soap,reflected,light,interference,film
        !          2458: minimum,maximum,transmission,coated,reflection,refraction,wave,film,coating
        !          2459: constructive,interferometer,wavelength,mirror,michelson,wave,interference
        !          2460: constructive,hair,wavelength,wedge,interference
        !          2461: diffraction,slits,wavelength,grating
        !          2462: maximum,diffraction,integer,line,maxima,light
        !          2463: minimum,maximum,diffraction,slit,light,single
        !          2464: diffraction,minima
        !          2465: pattern,maximum,diffraction,central,slit,light,single
        !          2466: aperture,minimum,wavelength,vertices,circular,linear,vertex
        !          2467: photosystem,photosynthesis
        !          2468: respiration,cycle,krebs,pyruvate,glycolysis
        !          2469: cycle,krebs,glycolysis
        !          2470: cycle,mitochondria,respir,co,krebs,glycolysis,respiration
        !          2471: capacitance,parallel,plate,plates,dielectric,capacitor
        !          2472: cycle,oxidation,krebs,glycolysis,respiration
        !          2473: capacitors,energy,capacitance,charge,series,voltage,volts,battery,capacitor
        !          2474: transport,cycle,fadh,krebs,chain,nadh,glycolysis,electron,respiration
        !          2475: forces,gravity,newtons,force,tension,vector,law,laws,inclined,plane,incline,weight,velocity,terminal
        !          2476: 
        !          2477: forces,object,diagram,force,frictionless,tension,objects,direction,acceleration,component,freebody,mass,friction,massless
        !          2478: 
        !          2479: applet,pulley,inclined,plane
        !          2480: static,kinetic,aristotle,kinematics,frictional,forces,kinetic,static,friction,force,resistance,rolling
        !          2481: 
        !          2482: transport,proton,gradient,cellular,chain,electron,respiration,chemiosmosis
        !          2483: chemical,transport,gradient,electro,cellular,chain,electrochemical,electron,respiration,chemiosmosis
        !          2484: 
        !          2485: cellular,respiration,gradient,membrane,atp,electrochemical,potential,chemiosmosis
        !          2486: 
        !          2487: mitochondrion,chloroplast,cellular,respiration,chemiosmosis
        !          2488: Slding,block
        !          2489: 
        !          2490: genetics,inheritance,mendel,gene,genetic,gregor,inheritence
        !          2491: kg,ma,newtons,tension,acceleration,mass
        !          2492: kg,forces,ma,newtons,force,accelerate,acceleration,mass,coefficient,friction
        !          2493: 
        !          2494: kg,forces,angle,force,acceleration,mass,inclined,plane
        !          2495: forces,newtons,satellite,force,xcomponent
        !          2496: masses,kg,acceleration,mass,pulley,atwood
        !          2497: gravity,force,air,resistance,weight,velocity,terminal
        !          2498: forces,angle,force,accelerating,constant,velocity
        !          2499: masses,kg,gravity,force,machine,friction,pulley,velocity
        !          2500: capacitors,capacitance,charge,coulomb,fields,circuits,conductors,electrical,conductor,charges,farad,volt,capacity,capacitor,faraday
        !          2501: 
        !          2502: capacitance,charge,conducting,potential
        !          2503: capacitors,shape,coulombs,affecting,capacitance,grounded,field,charge,size,permittivity,force,conductors,factor,conductor,charges,sphere,dielectric,battery,potential,capacitor,proximity,medium
        !          2504: 
        !          2505: capacitors,capacitance,plate,permittivity,gauss,plates,gaussian,vectors,charged,conductor,charges,law,dielectric,capacitor,flux
        !          2506: 
        !          2507: capacitors,capacitance,parallel,plate,capacitances,capacitor
        !          2508: thundercloud,field,charge,parallel,plate,voltage,area,separation,capacity,potential,capacitor,cloud
        !          2509: 
        !          2510: capacitance,permittivity,conducting,force,spherical,concentric,conductor,sphere,potential,spheres
        !          2511: 
        !          2512: capacitance,conducting,formula,farad,surface,capacity
        !          2513: capacitance,grounded,charge,force,ground,concentric,sphere,isolated,capacity,potential,spheres
        !          2514: 
        !          2515: capacitors,capacitance,parallel,equivalent,electricity,circuits,circuit,series,voltage,electronic,battery,potential,capacitor,batteries
        !          2516: 
        !          2517: capacitors,connected,capacitance,charge,series,capacitor
        !          2518: capacitors,capacitance,equivalent,series
        !          2519: capacitors,capacitance,parallel,equivalent,plates,potential,capacitor
        !          2520: capacitors,connected,capacitance,parallel,capacitances
        !          2521: capacitors,capacitance,parallel,equivalent,series,applet,capacitances
        !          2522: capacitors,capacitance,circuits,circuit,voltage,conductor,isolated,battery,electrically,potential
        !          2523: 
        !          2524: energy,capacitance,repulsion,charge,work,force,charged,conductor,charges,stored,potential,capacitor
        !          2525: 
        !          2526: energy,capacitance,generator,voltage,potential,graaf,van
        !          2527: insulating,conductor,capacitance,electroscope,charge,work,potential,conductors,sharing
        !          2528: 
        !          2529: polar,coulombs,dielectrics,positive,capacitance,dipoles,polarization,field,inducing,coulomb,molecule,neutral,molecules,force,electrons,electrical,nonpolar,electric,induced,dipole,direction,conductor,charges,negative,insulator,dielectric,potential,capacitor
        !          2530: 
        !          2531: heat,energy
        !          2532: 
        !          2533: 
        !          2534: 
        !          2535: charges,charge,coulomb,ampere,electrons,flow,electrical
        !          2536: electric,thermal,scattering,drifting,drift,heat,impurities,conductor,dissipation,energy,velocities,field,charge,imperfections,flows,battery,vibrations,potential,ions,atoms,temperature,force,resistance,electron,conductors,velocity,electrons,conduction,electrical,terminal
        !          2537: 
        !          2538: electric,drift,charges,electron,velocity,electrons
        !          2539: voltage,ohm,ohms,semiconductor,conductor,volt,resistance
        !          2540: code,color,band,resistances,coding,resistance,colors,numbers,resistors,resistor,tolerance,ohm
        !          2541: 
        !          2542: resistivity,charge,conductors,conductivity,resistance
        !          2543: resistivity,capacitance,plate,permittivity,plates,voltage,area,capacitor,resistance
        !          2544: 
        !          2545: resistivity,dependence,temperature,resistance
        !          2546: dissipation,energy,charge,circuits,circuit,watthour,circuitry,dissipated,ohms,charges,watt,power,potential,resistance,resistor
        !          2547: 
        !          2548: dissipated,dissipation,power,dissipate,voltage
        !          2549: currents,equivalent,circuits,circuit,series,resistors,ri,rs,resistances,resistance,resistor
        !          2550: 
        !          2551: resistances,potentiometer,potential,resistance,circuit,series,resistors
        !          2552: parallel,currents,equivalent,potential,circuits,resistance,circuit,resistors,resistor
        !          2553: 
        !          2554: electrodes,electrolyte,terminals,emf,positive,charges,dissipation,energy,negative,chemical,ion,reactions,charge,electromotive,electrode,battery,potential,ions,permittivity,resistance,circuit,electron,electrons,voltage,electrical,terminal,batteries
        !          2555: 
        !          2556: length,mirror,focal,ray,concave,mirrors,convex,curvature,image,magnification
        !          2557: 
        !          2558: light,convex,mirror,magnification
        !          2559: diffraction,snells,incidence,displacements,ray,incident,transmitted,displaced,law,lenses,transparent,displacement,beam
        !          2560: 
        !          2561: length,lensmaker,focal,refraction,refracted,formula,lens,focus,lenses,rays
        !          2562: length,mirror,focal,lens,lenses,images,image
        !          2563: length,mirror,focal,ray,inverted,lens,lenses,image
        !          2564: refracted,lens,lenses,image
        !          2565: length,focal,lens,image
        !          2566: length,focal,concave,lens,lenses
        !          2567: dispersions,lengths,telescope,wavelength,dispersion,focal,refraction,hubble,parabolic,lens,chromatic,focus,aberration,light,lenses,nasa,aberrations
        !          2568: 
        !          2569: diopter,length,mirror,focal,lens,lenses,optometrists
        !          2570: prism,lens,fresnel
        !          2571: mirror,reflection,ray,reflected,light,mirrors
        !          2572: length,mirror,focal,convex,magnification
        !          2573: length,mirror,focal,magnification
        !          2574: diverging,intersect,lens,lenses
        !          2575: snells,law
        !          2576: snells,reflection,ray,law,light
        !          2577: length,focal,lens,lenses,magnification
        !          2578: length,mirror,focal,lens,lenses
        !          2579: focal,magnification
        !          2580: diopter,length,diopters,inverse,image,magnification
        !          2581: picture,reflecting,mirror,reflection
        !          2582: diopter,length,focal
        !          2583: transistors,junction,charge,currents,circuits,circuit,series,resistors,voltage,ri,kirchhoff,potentials,kirchhoffs,power,conservation,potential,resistance,loop,batteries
        !          2584: 
        !          2585: junction,currents,voltage,flow,terminals,kirchhoffs,rule,flows,battery,potential,resistance,rules,loop,resistor,terminal,batteries
        !          2586: 
        !          2587: junction,parallel,loops,series,resistors,kirchhoff,junctions,kirchhoffs,loop,batteries
        !          2588: 
        !          2589: capacitors,charge,circuits,circuit,resistors,rc,rccircuits,kirchhoffs,capacitor,resistor
        !          2590: 
        !          2591: ammeters,currents,circuit,resistors,voltage,rc,rs,ammeter,resistance,resistor
        !          2592: 
        !          2593: voltmeter,currents,voltages,circuits,circuit,voltage,galvanometer,resistance,resistor
        !          2594: 
        !          2595: voltage,galvanometer,ammeter,resistance
        !          2596: ohms,resistance,voltage
        !          2597: series,resistors,voltage,conduction,battery,resistance,resistor
        !          2598: currents
        !          2599: drift,number,charge,electron,velocity
        !          2600: resistivity,spool,copper,wire,resistance
        !          2601: circuit,volts,resistance,ir,resistor
        !          2602: circuit,voltage,ohms,volts,drop,resistance,resistor
        !          2603: dissipated,ohms,dissipation,power,volts,cicuit,circuit,voltage,resistor
        !          2604: equivalent,circuit,resistors,ohms,resistance
        !          2605: resistors,voltage,wire,bulb,light,bulbs,battery,resistance
        !          2606: dissipated,dissipation,power,circuit,resistors,voltage,resistor
        !          2607: kirchhoff,currents,potential,loops,circuit,voltage,ohm
        !          2608: current,circuits,circuit,volt,resitors,resistances,potential,resistance
        !          2609: electricity,hint,voltage,cost,power,solution,costs
        !          2610: voltmeters,voltmeter,series,resistors,voltage,ohm,ohms,galvanometer,volts,resistance,resistor
        !          2611: 
        !          2612: circuit,series,voltage,ohms,age,volts,battery,resistance,resistor
        !          2613: coulombs,forces,charge,coulomb,newtons,electrostatic,force,attraction,charges,negative,law,attractive
        !          2614: 
        !          2615: force,magnitude,vectors,vector,charges
        !          2616: distance,charge,force,electric
        !          2617: velocity
        !          2618: 
        !          2619: 
        !          2620: 
        !          2621: power
        !          2622: velocity
        !          2623: power
        !          2624: time
        !          2625: kg,lb,energy,horsepower,work,speed,accelerate,accelerating,mass,power,friction,lbs,hp
        !          2626: 
        !          2627: energy,work,acceleration,kinetic,accelerates,velocity
        !          2628: energy,work,watt,mass,power,accelerates,hp,resistance,velocity
        !          2629: joules,angle,work,force,coefficient,air,resistance,drag,velocity
        !          2630: schleiden,virchow,schwann,theodor,cell,rudolph,matthias
        !          2631: hairlike,movement,proteins,structures,prokaryotes,cell,walls,whiplike,plant
        !          2632: cube,ratio,area,volume,surface,calculate
        !          2633: volume,calculate
        !          2634: areatovolume,ratio,area,volume,surface,calculate
        !          2635: areatovolume,cube,length,ratio,side,surface
        !          2636: areatovolume,cell,shapes
        !          2637: cell,complex,prokaryote,eukaryote
        !          2638: flagella,cells,bacteria,structure
        !          2639: dna,compartments,circular,cells,cell,nucleus
        !          2640: 
        !          2641: 
        !          2642: potential,energy
        !          2643: distance,average
        !          2644: accelerate,acceleration
        !          2645: acceleration
        !          2646: angle,projectile,horizontal
        !          2647: degrees
        !          2648: coefficient,friction
        !          2649: acceleration,friction
        !          2650: force,block,accelerates
        !          2651: kg,newtons,inserting,acceleration,practice
        !          2652: average,practice,exam
        !          2653: magnitude,average,velocity
        !          2654: seconds,acceleration,average,truck
        !          2655: acceleration,average
        !          2656: acceleration,practice
        !          2657: acceleration
        !          2658: ball,velocity
        !          2659: practice,exam
        !          2660: fish,elevator,downward,decreasing,weight
        !          2661: force,magnitude,acceleration,decreasing,practice,velocity
        !          2662: block,respectively,static,coefficient
        !          2663: forces,force,block,static
        !          2664: angle,force,practice,external
        !          2665: forces,gravity,force,block,component,friction,incline,velocity
        !          2666: bullet,heavier,bullets
        !          2667: bullets,practice
        !          2668: book,gravity,air,velocity
        !          2669: gravitational,against,potential
        !          2670: energy,car,kinetic
        !          2671: car,kinetic,practice,exam
        !          2672: ball,angle,energy,building,degrees,kinetic
        !          2673: angle,energy,practice,exam
        !          2674: kg,joules,angle,energy,degrees,block,friction,constant,slides,incline
        !          2675: energy,kinetic,potential
        !          2676: angle,boat,river
        !          2677: boat
        !          2678: angle,ceiling,tension,wire,wires
        !          2679: equilibrium,net,force,component
        !          2680: acceleration,machine,friction,string,pulley,atwood
        !          2681: block,exam
        !          2682: flying,angle,shot,arrow
        !          2683: flying,arrow
        !          2684: exam
        !          2685: practice,exam
        !          2686: chapters,practice,exam
        !          2687: stronger,attract,charged,charges,particles,practice
        !          2688: attract,charged,charges,particles,practice
        !          2689: field,electric
        !          2690: field,charge,fields,charges,cancel
        !          2691: field,electric,approximately
        !          2692: center,ball,field,charge,acting,electrostatic,force,electric,charged,practice,exam
        !          2693: 
        !          2694: charge,work
        !          2695: energy,work,accelerate,attraction,kinetic,negative,attracted,potential
        !          2696: field,charge,conducting,electric,sphere
        !          2697: field,charge,balance,force,electric,induced,conductor
        !          2698: plate,voltage,charged,negative,capacitor
        !          2699: positive,charge,plate,voltage,negative,capacitor
        !          2700: capacitance,capacitor
        !          2701: capacitance,plates,capacitor
        !          2702: circuit,capacitor
        !          2703: capacitors,capacitance,parallel,circuit,series,capacitor
        !          2704: gap,plates,voltage,dielectric,air,capacitor
        !          2705: gap,plates,voltage,charged,charges,dielectric,air,capacitor
        !          2706: voltage,resistor
        !          2707: circuit,series,voltage,resistor
        !          2708: circuit
        !          2709: junction,circuit,kirchhoffs
        !          2710: voltage,dissipated,power,resistance,resistor
        !          2711: appropriate,voltage,dissipated,resistance,resistor
        !          2712: resistivity,parallel,diameter,wire,resistance
        !          2713: parallel,resistance
        !          2714: field,voltage,magnetic,coil
        !          2715: field,voltage,area,magnetic,coil
        !          2716: field,force,magnetic
        !          2717: force,conductor,magnetic
        !          2718: field,currents,magnetic
        !          2719: currents,conductor,magnetic
        !          2720: screen,deflected,magnetic,computer,electron
        !          2721: deflection,deflected,magnetic,electron,velocity
        !          2722: field,solenoids,solenoid
        !          2723: toroids,core,solenoids,solenoid
        !          2724: circuit
        !          2725: circuit,selfinductance,battery
        !          2726: 
        !          2727: 
        !          2728: tension,block
        !          2729: 
        !          2730: angle,inertia,mass,inclined,practice,plane,rolling,disk
        !          2731: tranlational,rotational,kinetic,inertia,mass,potential,disk,velocity
        !          2732: forces,exert,pistons
        !          2733: pressure
        !          2734: submerged,gravity,float,sink,floats,specific,volume,liquid
        !          2735: force,displaced,liquid,buoyant
        !          2736: gases,ideal,molecules,temperature,pressure,average,mass,volume,momenta
        !          2737: gas,gases,ideal,law
        !          2738: angular,acceleration,centripetal,practice,velocity
        !          2739: acceleration
        !          2740: angular,radius,circular,race,acceleration
        !          2741: acceleration,velocity
        !          2742: energy,gun,bullet,fires,kinetic,conserved
        !          2743: gun,bullet,ineleastic,conserved,firing,collision,recoils
        !          2744: ball,bounced,kinetic
        !          2745: energy,fraction,kinetic
        !          2746: energy,gravitational,kinetic,potential
        !          2747: energy,gravitational,kinetic
        !          2748: spherical,planet,surface
        !          2749: gravitational,force,weight
        !          2750: submerged,gravity,suspended,container,specific
        !          2751: acting,force,buoyant
        !          2752: 
        !          2753: 
        !          2754: heat,equilibrium,temperature,ice,fridge,mixture,specific,softdrink
        !          2755: heat,temperature,mixture,melt,softdrink
        !          2756: skater,counterclockwise,ice,clockwise,inertia,piruette
        !          2757: inertia,mass,rotation
        !          2758: skater,length,ice,skaters,mass,separation
        !          2759: momentum,moment,inertia
        !          2760: probe,shot,earth,velocity
        !          2761: energy,kinetic,conservation,potential
        !          2762: masses,acceleration,machine,mass,pulley,atwood,disk
        !          2763: moment,acceleration,inertia
        !          2764: practice,exam
        !          2765: voltage,dissipated,power,resistor
        !          2766: voltage,dissipated,power,resistor
        !          2767: 
        !          2768: circuit,capacitor
        !          2769: circuit,frequency
        !          2770: resonant,resonance,circuits,circuit,impedance
        !          2771: energy,voltage,transformer,friction,secondary,primary,coil
        !          2772: energy,circuit,voltage,transformers,transformer,windings,friction,secondary,primary,coil,winding,resistance
        !          2773: 
        !          2774: wavelength,refraction,practice,frequency
        !          2775: wavelength,refraction,hz,frequency
        !          2776: electromagnetic,field,wavelength,fields,electric,vector,color,magnetic,wave
        !          2777: energy,electromagnetic,field,wavelength,fields,color,magnetic,wave,spectrum
        !          2778: angle,light
        !          2779: snells,law
        !          2780: mirror,inverted,concave,curvature
        !          2781: mirror,concave,curvature
        !          2782: length,focal,lens
        !          2783: length,converging
        !          2784: lens
        !          2785: eyes,eye,diopters,lens,focus
        !          2786: refractive,disulfide,glass
        !          2787: lensmaker,lens,lenses,air,convex,disulfide,glass
        !          2788: length,telescope,mirror,concave,lens,convex,image
        !          2789: length,telescope,eye,mirror,focal,objective,eyepiece,lens,focussed,image,magnification
        !          2790: 
        !          2791: length,eye,focal,converging,magnifying,lens,image,magnification,glass
        !          2792: length,eye,focal,magnifying,lens,magnification
        !          2793: field,electric,laser,beam
        !          2794: energy,field,electric,laser,sunlight,light,intensity
        !          2795: polarizers,unpolarized,light,polarized
        !          2796: transmission,polarization,polarizers,axes,linearly,unpolarized,electric,axis,light,polarized,polarizer,intensity
        !          2797: 
        !          2798: experiment,maxima,light,interference,frequency
        !          2799: maxima,slit,separation,frequency
        !          2800: thin,reflection,refraction,lens,thickness,film,coating
        !          2801: wavelength,refracting,reflection,refraction,lens,refractive,glass
        !          2802: diffraction,slits,wavelength,grating,separation
        !          2803: diffraction,slits,wavelength,angles,screen,grating,separation
        !          2804: 
        !          2805: masses,frictionless,atwoods,acceleration,machine,mass,string,massless
        !          2806: acceleration
        !          2807: snow,kinetic,coefficient,friction,skier
        !          2808: acceleration
        !          2809: energy,frictionless,spring,displacement
        !          2810: energy,spring
        !          2811: ball,building
        !          2812: energy,velocity
        !          2813: energy,gravitational,heights,potential
        !          2814: gravitational,conservative,gravity,force,potential
        !          2815: masslesss,acceleration,mass,rotating,string,pulley,disk
        !          2816: acceleration
        !          2817: sliding,angle,mass,linear,friction,practice,spheres,plane,rolling
        !          2818: sliding,energy,rotational,sphere,kinetic,potential,rolling
        !          2819: diskshaped,rolls,pizza,pepperoni,spins,dough,mushroom
        !          2820: 
        !          2821: fundamental,vibrate,wave,string,harmonic
        !          2822: antinodes,harmonic
        !          2823: frictionless,spring,slides
        !          2824: maximum,mass,displacement
        !          2825: pendulum,string,oscillations
        !          2826: oscillations
        !          2827: harmonic,velocity
        !          2828: displacement,derivative
        !          2829: 
        !          2830: 
        !          2831: trajectory,speed,acceleration,parabolic
        !          2832: acceleration,velocity
        !          2833: ball,balls
        !          2834: 
        !          2835: heated,temperature,force,fractional
        !          2836: 
        !          2837: gravity,water,specific
        !          2838: ratio
        !          2839: equilibrium,molecule,vapor,water
        !          2840: 
        !          2841: gas,ideal,temperature,pressure,volume
        !          2842: 
        !          2843: sounds,decibel,intensities,sound,levels
        !          2844: 
        !          2845: speed,airplane,sound,hz,airport,frequency
        !          2846: 
        !          2847: speed,sound,hz,beat,frequency
        !          2848: wavelength,beat,frequency
        !          2849: ball,impulse,force,baseball,impact,collision
        !          2850: impulse,force
        !          2851: ball,cannonball,balls,collide,golf,collision
        !          2852: eleastic,ball,cannonball,balls,velocities,collision,velocity,recoils
        !          2853: ballistic,bullet,inelastic,collision,velocity
        !          2854: energy,converted,kinetic,potential,inelastic,collision
        !          2855: period,orbital,orbiting
        !          2856: period,law,keplers
        !          2857: gravity,orbit,spaceship
        !          2858: gravitational,gravity,spaceship
        !          2859: equilibrium,ice,melt
        !          2860: equilibrium,melting
        !          2861: gas,isobaric,law,thermodynamics
        !          2862: gas,heat,isobaric,work,ideal,temperature,pressure,volume,potential
        !          2863: 
        !          2864: capacitors,photons,ionized,maximum,diffraction,slits,momentum,energy,capacitance,decays,maxima,length,field,charge,polarizers,orbital,wavelength,half,proton,plate,eyes,photo,diopters,focal,reflection,refraction,force,circuit,plates,ray,grating,unpolarized,voltage,balmer,flow,deuterons,dissipated,electric,reflected,atom,laser,slit,charges,life,kinetic,bohr,lens,focus,broglie,magnetic,inductor,wave,photon,light,atomic,particle,dielectric,particles,potential,capacitor,hz,film,electron,radioactive,frequency,uncertainty,resistor,rays,nucleus,coating
        !          2865: 
        !          2866: 
        !          2867: capacitors,momentum,energy,capacitance,length,charge,wavelength,half,emission,photo,focal,reflection,refraction,force,grating,unpolarized,electrons,voltage,balmer,flow,deuterons,electric,laser,charges,kinetic,bohr,lens,focus,broglie,power,wave,photon,potential,capacitor,film,electron,emitted,frequency,uncertainty
        !          2868: 
        !          2869: voltage,power,resistor
        !          2870: dissipation,voltage,dissipated,resistor
        !          2871: 
        !          2872: circuit,capacitor
        !          2873: hz,frequency
        !          2874: minimum,maximum,resonant,resonance,circuits,circuit,impedance,frequency
        !          2875: energy,voltage,power,friction,coil
        !          2876: dissipation,energy,efficiency,voltage,transformers,transformer,friction,conservation,conversion,flux,resistance
        !          2877: 
        !          2878: wavelength,refraction,hz,frequency
        !          2879: wavelength,speed,refraction,light,frequency
        !          2880: electromagnetic,field,wavelength,fields,electric,magnetic,wave
        !          2881: energy,electromagnetic,field,wavelength,fields,electric,magnetic,wave
        !          2882: light
        !          2883: maximum,snells,light
        !          2884: mirror,inverted,concave,image
        !          2885: mirror,inverted,concave,curvature
        !          2886: focal,lens,image
        !          2887: inverted,lens,image
        !          2888: eyes,diopters,lens,focus
        !          2889: eyes,eye,diopters,lens,focus
        !          2890: refractive,glass
        !          2891: lensmaker,lens,lenses,convex
        !          2892: length,eye,focal,concave,eyepiece,lens,focussed,convex
        !          2893: length,telescope,eye,mirror,focal,eyepiece,lens,magnification
        !          2894: length,angular,eye,focal,converging,magnifying,lens,magnification,glass
        !          2895: length,eye,focal,converging,magnifying,magnification
        !          2896: electric,laser,light
        !          2897: energy,field,electric,laser,light,beam
        !          2898: polarizers,unpolarized,polarized
        !          2899: vibrating,transmission,polarization,polarizers,unpolarized,polarized,polarizer,intensity
        !          2900: 
        !          2901: maxima,double,slit,interference,frequency
        !          2902: maxima,double,slit,interference,frequency
        !          2903: thin,reflection,refraction,lens,light,thickness,film,coating
        !          2904: coatings,thin,wavelength,refracting,reflection,film,glass,coating
        !          2905: diffraction,wavelength,grating
        !          2906: pattern,maximum,diffraction,wavelength,grating
        !          2907: 
        !          2908: trajectory,motion,charge,force,charges,magnetic,perpendicular,particle,centripetal,cyclotron,lorentz,velocity,frequency
        !          2909: 
        !          2910: trajectory,field,magnetic,cyclotron,rotation,frequency
        !          2911: amperes,field,charge,fields,permittivity,gauss,electrostatics,charges,magnetic,permeability
        !          2912: 
        !          2913: amperes,field,cylindrical,circular,symmetry,magnetic,symmetric
        !          2914: current,field,fields,magnetic
        !          2915: helmholtz,coils,magnet,righthand,circular,magnetic,permeability,coil,loop,solenoid
        !          2916: 
        !          2917: field,magnetic,coil,loop
        !          2918: coils,toroids,amperes,field,fields,toroid,solenoids,magnetic,coil,solenoid
        !          2919: toroids,field,fields,toroid,hospitals,solenoids,magnetic,patient,solenoid
        !          2920: forces,field,magnetic,ampere,currents,newtons,hand,force
        !          2921: repulsive,forces,length,wires,opposite,currents,force,directions,flow
        !          2922: coils,field,net,motor,torque,force,electrons,electrical,galvanometer,magnets,magnetic,coil,lorentz,loop
        !          2923: 
        !          2924: magnet,field,torque,magnitude,magnetic,coil
        !          2925: magnet,dioxide,charge,orbital,moment,antiferromagnetism,permittivity,atoms,temperature,electrons,ferro,atom,ferromagnetism,orbit,magnetic,superconductors,atomic,electromagnet,magnetizing,coil,moments,magnetism
        !          2926: 
        !          2927: 
        !          2928: example,force,block,static,friction
        !          2929: recessive,dominant, 
        !          2930: phenotype,dihybrid,chromosome,alleles,inheritance,gamete,mendel,meiosis,phenotypic
        !          2931: 
        !          2932: meiosis,punnett,genetics,square,genetic
        !          2933: meiotic,dihybrid,dominant,chromosome,dyad,allele,parental,meiosis,recessive,maternal
        !          2934: 
        !          2935: tetrads,synapsis,genetics,meiosis,genetic,tetrad
        !          2936: kg,vector,mass,momentum,vectors,linear,velocity
        !          2937: energy,unit,charge,ne,electrons,electric,charges,uncharged,conservation,quantization,electron,units
        !          2938: 
        !          2939: 
        !          2940: field,charge,force,electric,vector,charges
        !          2941: field,currents,magnitude
        !          2942: torques,ma,moment,magnetic,coil
        !          2943: superconducting,particle,cyclotron,rotation,frequency
        !          2944: potential,energy
        !          2945: monohybrid,transmission,genetics,inheritance,gene,trait,traits,chromosome,trihybrid,crosses
        !          2946: 
        !          2947: 
        !          2948: 
        !          2949: 
        !          2950: 
        !          2951: 
        !          2952: 
        !          2953: 
        !          2954: 
        !          2955: 
        !          2956: 
        !          2957: 
        !          2958: 
        !          2959: 
        !          2960: 
        !          2961: 
        !          2962: 
        !          2963: 
        !          2964: 
        !          2965: 
        !          2966: 
        !          2967: 
        !          2968: 
        !          2969: 
        !          2970: 
        !          2971: 
        !          2972: 
        !          2973: 
        !          2974: 
        !          2975: 
        !          2976: 
        !          2977: 
        !          2978: 
        !          2979: 
        !          2980: 
        !          2981: 
        !          2982: 
        !          2983: momentum,motion,impulse,range,projectile,velocity
        !          2984: momentum,angle,angles,ycomponent,magnitude,change,velocity
        !          2985: pendulum,swings,circle,angle,speed,conical,mass,swing
        !          2986: magnitude,acceleration,inertia,angular,gravity,torque,newtons,ia,rotational,tension,rotate,dynamics,absolute
        !          2987: 
        !          2988: 
        !          2989: 
        !          2990: masses,speed,collisions,collide,mass,elastic,collision
        !          2991: 
        !          2992: 
        !          2993: 
        !          2994: 
        !          2995: 
        !          2996: 
        !          2997: 
        !          2998: 
        !          2999: 

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>