| # Gaudi Framework, version v25r0 |

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Namespaces | Variables
PhysicalConstants.py File Reference

Go to the source code of this file.

## Namespaces
namespace | GaudiKernel.PhysicalConstants

## Variables
float | GaudiKernel.PhysicalConstants.pi 3.14159265358979323846
int | GaudiKernel.PhysicalConstants.twopi 2
int | GaudiKernel.PhysicalConstants.halfpi 2
| GaudiKernel.PhysicalConstants.pi2 pi*pi
float | GaudiKernel.PhysicalConstants.Avogadro 6.0221367e+23
float | GaudiKernel.PhysicalConstants.c_light 2.99792458e+8
| GaudiKernel.PhysicalConstants.c_squared c_light*c_light
float | GaudiKernel.PhysicalConstants.h_Planck 6.6260755e-34
| GaudiKernel.PhysicalConstants.hbar_Planck h_Planck/twopi
| GaudiKernel.PhysicalConstants.hbarc hbar_Planck*c_light
| GaudiKernel.PhysicalConstants.hbarc_squared hbarc*hbarc
| GaudiKernel.PhysicalConstants.electron_charge -eplus
| GaudiKernel.PhysicalConstants.e_squared eplus*eplus
float | GaudiKernel.PhysicalConstants.electron_mass_c2 0.51099906
float | GaudiKernel.PhysicalConstants.proton_mass_c2 938.27231
float | GaudiKernel.PhysicalConstants.neutron_mass_c2 939.56563
float | GaudiKernel.PhysicalConstants.amu_c2 931.49432
| GaudiKernel.PhysicalConstants.amu amu_c2/c_squared
int | GaudiKernel.PhysicalConstants.mu0 4
int | GaudiKernel.PhysicalConstants.epsilon0 1
tuple | GaudiKernel.PhysicalConstants.elm_coupling e_squared/(4*pi*epsilon0)
| GaudiKernel.PhysicalConstants.fine_structure_const elm_coupling/hbarc
| GaudiKernel.PhysicalConstants.classic_electr_radius elm_coupling/electron_mass_c2
| GaudiKernel.PhysicalConstants.electron_Compton_length hbarc/electron_mass_c2
| GaudiKernel.PhysicalConstants.Bohr_radius electron_Compton_length/fine_structure_const
| GaudiKernel.PhysicalConstants.alpha_rcl2 fine_structure_const*classic_electr_radius*classic_electr_radius
| GaudiKernel.PhysicalConstants.twopi_mc2_rcl2 twopi*electron_mass_c2*classic_electr_radius*classic_electr_radius
float | GaudiKernel.PhysicalConstants.k_Boltzmann 8.617385e-11
float | GaudiKernel.PhysicalConstants.STP_Temperature 273.15
int | GaudiKernel.PhysicalConstants.STP_Pressure 1
int | GaudiKernel.PhysicalConstants.kGasThreshold 10
int | GaudiKernel.PhysicalConstants.universe_mean_density 1