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Added a bunch of constants to sympy/physics/units #12450

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Mar 31, 2017
Merged

Added a bunch of constants to sympy/physics/units #12450

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4 changes: 4 additions & 0 deletions sympy/physics/units/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -155,6 +155,10 @@
avogadro_number,
avogadro, avogadro_constant,
boltzmann, boltzmann_constant,
R, molar_gas_constant,
faraday_constant,
josephson_constant,
von_klitzing_constant,
amu, amus, atomic_mass_unit, atomic_mass_constant,
gee, gees, acceleration_due_to_gravity,
u0, magnetic_constant,
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9 changes: 9 additions & 0 deletions sympy/physics/units/definitions.py
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Expand Up @@ -125,6 +125,15 @@
boltzmann = boltzmann_constant = Quantity("boltzmann_constant", energy/temperature, 1.38064852e-23*joule/kelvin)
# Atomic mass
amu = amus = atomic_mass_unit = atomic_mass_constant = Quantity("atomic_mass_constant", mass, 1.660539040e-24*gram)
# Molar gas constant
R = molar_gas_constant = Quantity("molar_gas_constant", energy/(temperature * amount_of_substance),
8.3144598*joule/kelvin/mol, abbrev="R")
# Faraday constant
faraday_constant = Quantity("faraday_constant", charge/amount_of_substance, 96485.33289*C/mol)
# Josephson constant
josephson_constant = Quantity("josephson_constant", frequency/voltage, 483597.8525e9*hertz/V, abbrev="K_j")
# Von Klitzing constant
von_klitzing_constant = Quantity("von_klitzing_constant", voltage/current, 25812.8074555*ohm, abbrev="R_k")
# Acceleration due to gravity (on the Earth surface)
gee = gees = acceleration_due_to_gravity = Quantity("acceleration_due_to_gravity", acceleration, 9.80665*meter/second**2, "g")
# magnetic constant:
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