Annotation of loncom/html/adm/help/tex/Physical_Units.tex, revision 1.2
1.1 www 1: \label{Physical_Units}
2: \section*{Physical Units Accepted by LON-CAPA}
3: The following subsections show the physical units that LON-CAPA accepts.
4: The symbols must be used when entering the units, for example {}``35 kg''.
5: \subsection*{Base Units}
6: \begin{verbatim}
7: # name symbol comment
8:
9: meter m # length
10: kilogram kg # mass
11: second s # time
12: ampere A # electric current
13: kelvin K # thermodynamic temperature
14: mole mol # amount of substance
15: candela cd # luminous intensity
16: \end{verbatim}
17: \subsection*{Prefixes}
18: \begin{verbatim}
19: # Prefix symbol factor
20:
21: yotta Y 10^{24}
22: zetta Z 10^{21}
23: exa E 10^{18}
24: peta P 10^{15}
25: tera T 10^{12}
26: giga G 10^9
27: mega M 10^6
28: kilo k 10^3
29: hecto h 10^2
30:
31: deci d 10^-1
32: centi c 10^-2
33: milli m 10^-3
34: micro u 10^-6
35: nano n 10^-9
36: pico p 10^{-12}
37: femto f 10^{-15}
38: atto a 10^{-18}
39: zepto z 10^{-21}
40: yocto y 10^{-24}
41: \end{verbatim}
42: \subsection*{Derived Units}
43: \begin{verbatim}
44: # Derived Unit
45: # name symbol comment
46:
47: gram g # mass
48: hour hr # time
49: minute min # time
50: day day # time
51: year yr # time
52: pound lb # mass
53: ounce oz # mass
54: inch in # length
55: foot ft # length
56: mile mi # length
57: yard yd # length
58: nautical_mile n_mi # length, nautical mile (UK)
59: rood rood # area, rood
60: acre acre # area, acre
61: hertz Hz # frequency
62: litre L # volume
63: newton N # force
64: pound_force lbf # force
65: dyne dyn # force
66: pascal Pa # pressure, stress
67: bar bar # pressure
68: mmHg mmHg # pressure, millimeter of mercury
69: torr torr # pressure
70: atm atm # standard atmosphere
71: joule J # energy, work, heat
72: electronvolt eV # energy
73: calorie cal # energy
74: Btu Btu # energy
75: watt W # power, radiant flux
76: coulomb C # electric charge
77: volt V # electric potential, electromotive force
78: ohm ohm # electric resistance, use this in /ANS
79: ohm ohms # electric resistance
80: ohm Ohm # electric resistance
81: ohm Ohms # electric resistance
82: siemens S # electric conductance
83: farad F # electric capacitance
84: tesla T # magnetic flux density
85: weber Wb # magnetic flux
86: henry H # inductance
87: radian rad # plane angle
88: degree deg # plane angle (Pi rad=180 deg)
89: steradian sr # solid angle
90: lumen lm # luminous flux
91: lux lx # illuminance
92: becquerel Bq # activity (radioactive)
93: gray Gy # absorbed dose (of radiation)
94: sievert Sv # dose equivalent (dose equivalent index)
95: astroUnit AU # mean distance earth to sun
1.2 ! albertel 96: celcius degC # multiplicatively OK
! 97: farenheight degF # multiplicatively OK
! 98: molarity M # chemisty
! 99: amu amu # atomic mass unit
! 100: amu u # atomic mass unit
1.1 www 101: \end{verbatim}
102: \subsection*{Interpretation}
103: The coded units are interpreted in the order of basic unit,
104: derived unit, then prefix. For example, ``T'' will be matched against
105: ``tesla'' instead of considered the prefix ``T''. Another example is that
106: ``min'' will match
107: ``minutes'' instead of treated as a combination of the prefix ``m'' and units.
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