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40.1 Fundamental Constants

GSL_CONST_MKSA_SPEED_OF_LIGHT

The speed of light in vacuum, c.

GSL_CONST_MKSA_VACUUM_PERMEABILITY

The permeability of free space, \mu_0. This constant is defined in the MKSA system only.

GSL_CONST_MKSA_VACUUM_PERMITTIVITY

The permittivity of free space, \epsilon_0. This constant is defined in the MKSA system only.

GSL_CONST_MKSA_PLANCKS_CONSTANT_H

Planck’s constant, h.

GSL_CONST_MKSA_PLANCKS_CONSTANT_HBAR

Planck’s constant divided by 2\pi, \hbar.

GSL_CONST_NUM_AVOGADRO

Avogadro’s number, N_a.

GSL_CONST_MKSA_FARADAY

The molar charge of 1 Faraday.

GSL_CONST_MKSA_BOLTZMANN

The Boltzmann constant, k.

GSL_CONST_MKSA_MOLAR_GAS

The molar gas constant, R_0.

GSL_CONST_MKSA_STANDARD_GAS_VOLUME

The standard gas volume, V_0.

GSL_CONST_MKSA_STEFAN_BOLTZMANN_CONSTANT

The Stefan-Boltzmann radiation constant, \sigma.

GSL_CONST_MKSA_GAUSS

The magnetic field of 1 Gauss.