File:  [LON-CAPA] / loncom / homework / capa.units
Revision 1.17: download - view: text, annotated - select for diffs
Wed Jun 8 20:29:04 2011 UTC (10 years, 11 months ago) by www
Branches: MAIN
CVS tags: version_2_12_X, version_2_11_X, version_2_11_4_uiuc, version_2_11_4_msu, version_2_11_4, version_2_11_3_uiuc, version_2_11_3_msu, version_2_11_3, version_2_11_2_uiuc, version_2_11_2_msu, version_2_11_2_educog, version_2_11_2, version_2_11_1, version_2_11_0_RC3, version_2_11_0_RC2, version_2_11_0_RC1, version_2_11_0, version_2_10_X, version_2_10_1, loncapaMITrelate_1, language_hyphenation_merge, language_hyphenation, HEAD, BZ4492-merge, BZ4492-feature_horizontal_radioresponse, BZ4492-feature_Support_horizontal_radioresponse, BZ4492-Support_horizontal_radioresponse
degF was not working (and mispelled, too)

# The LearningOnline Network with CAPA
# Physical Unit definitions
#
# $Id: capa.units,v 1.17 2011/06/08 20:29:04 www Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
# 
# ======================= Unit section =============
# Base Unit
# name      symbol     comment

<< Base Unit >>

meter           m      # length
kilogram        kg     # mass
second          s      # time
ampere          A      # electric current
kelvin          K      # thermodynamic temperature
mole            mol    # amount of substance
candela         cd     # luminous intensity
decibel         dB     # log of pressure amplitude

#   Prefix     symbol     factor
<< Prefix >>

yotta            Y         10^{24}
zetta            Z         10^{21}
exa              E         10^{18}
peta             P         10^{15}
tera             T         10^{12}
giga             G         10^9
mega             M         10^6
kilo             k         10^3
hecto            h         10^2
deca             D         10^1

deci             d         10^-1
centi            c         10^-2
milli            m         10^-3
micro            u         10^-6
nano             n         10^-9
pico             p         10^{-12}
femto            f         10^{-15}
atto             a         10^{-18}
zepto            z         10^{-21}
yocto            y         10^{-24}




# Derived Unit
# name       symbol     unit          comment
# name must be in oneword
<<Derived Unit>>

gram            g      0.001 kg      # mass
minute          min    60 s          # time
hour            hr     3600. s       # time
hour            h      3600. s       # time
day             day    24.0 hr       # time
day             days   24.0 hr       # time
year            yr     365.24 day    # time
pound           lb     0.45359237 kg # mass
ounce   	oz     2.83495E-2 kg # mass
inch            in     2.54 cm       # length
foot            ft     12 in         # length
mile            mi     5280 ft       # length
yard            yd     0.9144 m      # length
nautical_mile   n_mi   6080 ft       # length, nautical mile (UK)
rood            rood   1210 yd^2     # area, rood
acre            acre   4840 yd^2     # area, acre
hertz           Hz     1/s           # frequency
litre           L      10^3*cm^3     # volume
newton          N      m*kg/s^2      # force
pound_force     lbf    4.44822 N     # force
dyne            dyn    1E-5 N        # force
pascal          Pa     N/m^2           # pressure, stress
bar             bar    1E5 Pa          # pressure
mmHg            mmHg   1.33322E2 Pa    # pressure, millimeter of mercury
torr            torr   1 mmHg          # pressure
atm             atm    760 torr        # standard atmosphere
joule           J      N*m             # energy, work, heat
electronvolt    eV     1.6021892E-19 J # energy
calorie         cal    4.1868 J        # energy
Btu             Btu    1.05506E3 J     # energy
watt            W      J/s             # power, radiant flux
coulomb         C      A*s             # electric charge
volt            V      J/C           # electric potential, electromotive force
ohm             ohm    V/A           # electric resistance, use this in /ANS
ohm             ohms   V/A           # electric resistance
ohm             Ohm    V/A           # electric resistance
ohm             Ohms   V/A           # electric resistance
mho             mho    1/ohm         # electric conductance
mho             mhos   1/ohm         # electric conductance
mho             Mho    1/ohm         # electric conductance
mho             Mhos   1/ohm         # electric conductance
siemens         S      1/Ohm         # electric conductance
farad           F      C/V           # electric capacitance
tesla           T      V*s/m^2       # magnetic flux density
weber           Wb     V*s           # magnetic flux
henry           H      V*s/A         # inductance
radian          rad    m/m            # plane angle
degree          deg    1.745329E-2 rad # plane angle (Pi rad=180 deg)
steradian       sr     m^2 /m^2        # solid angle
lumen           lm     cd*sr         # luminous flux
lux             lx     cd*sr/m^2     # illuminance
becquerel       Bq     1/s           # activity (radioactive)
curie           Ci     3.70E10 Bq    # activity (radioactive)
gray            Gy     J/kg          # absorbed dose (of radiation)
sievert         Sv     J/kg          # dose equivalent (dose equivalent index)
astroUnit       AU     1.49598E11 m  # mean distance earth to sun
celcius         degC   1 K           # multiplicatively OK
fahrenheit	degF   0.555555555 K # multiplicatively OK
molarity        M      mol/L         # chemisty
amu             amu    1.66053873e-27 kg # atomic mass unit
amu             u      1.66053873e-27 kg # atomic mass unit
lightspeed      c      299792458 m/s     # speed of light
cubiccentimeter cc     cm^3              # cubic centimeter
electroncharge  e      1.6021892E-19 C   # elementary charge
hbar            hbar   1.05457148E-34 m^2*kg/s # Planck constant
milesperhour    mph    0.44704 m/s   # miles per hour
rpm             rpm    0.0166666667/s  # rounds per minute
rpm             rpms   0.0166666667/s  # rounds per minute
parsec          pc     3.08568025E16 m   # parsec

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