Warning

This documentation is for an old version of Cantera. You can find docs for newer versions here.

Physical Constants

Physical Constants

These values are the same as those in the C++ header file ct_defs.h in the Cantera kernel.

Cantera.constants.Avogadro = 6.02214129e+26

Avogadro’s Number, /kmol

Cantera.constants.Boltzmann = 1.3806487924497037e-23

Boltzmann-s constant

Cantera.constants.ElectronCharge = 1.602176565e-19

The charge on an electron (C)

Cantera.constants.ElectronMass = 9.10938291e-31

The mass of an electron (kg)

Cantera.constants.Faraday = 96485336.4595687

Faraday’s constant, C/kmol

Cantera.constants.GasConst_cal_mol_K = 1.9872041347992353

The ideal gas constant in cal/mol-K

Cantera.constants.GasConstant = 8314.4621

The ideal gas constant in J/kmo-K

Cantera.constants.OneAtm = 101325.0

One atmosphere in Pascals

Cantera.constants.Planck = 6.62607009e-34

Planck’s constant (J/s)

Cantera.constants.StefanBoltz = 5.670373e-08

The Stefan-Boltzmann constant, W/m^2K^4

Cantera.constants.epsilon_0 = 8.854187817620389e-12

Permittivity of free space

Cantera.constants.lightSpeed = 299792458.0

Speed of Light (m/s).

Cantera.constants.permeability_0 = 1.2566370614359173e-06

Permeability of free space \(\mu_0\) in N/A^2.