27#ifndef ELEMENTSKERNEL_ELEMENTSKERNEL_PHYSCONSTANTS_H_
28#define ELEMENTSKERNEL_ELEMENTSKERNEL_PHYSCONSTANTS_H_
62constexpr double amu = 1.660538921e-27 *
kg;
Definition of the common units based on MKSA.
constexpr double atmosphere
constexpr double hbar_Planck
constexpr double k_Boltzmann
constexpr double h_Planck
constexpr double kGasThreshold
constexpr double STP_Pressure
constexpr double electron_mass
constexpr double STP_Temperature
Standard Temperature and Pressure.
constexpr double epsilon0
permeability of free space
constexpr double elm_coupling
constexpr double c_squared
constexpr double Avogadro
constexpr double hbarc_squared
constexpr double electron_charge
constexpr double fine_structure_const
constexpr double proton_mass
constexpr double mu0
permeability of free space
constexpr double e_squared
constexpr double universe_mean_density