cern.clhep
Class PhysicalConstants

java.lang.Object
  cern.clhep.PhysicalConstants

public class PhysicalConstants

extends Object

High Energy Physics coherent Physical Constants. This class is a Java port of the C++ version found in CLHEP 1.4.0, which in turn has been provided by Geant4 (a simulation toolkit for HEP).

For aliasing see physicalConstants.

Version:

1.0, 09/24/99

physicalConstants

public static final PhysicalConstants physicalConstants

Little trick to allow for "aliasing", that is, renaming this class. Normally you would write

 PhysicalConstants.twopi;
 PhysicalConstants.c_light;
 PhysicalConstants.h_Planck;
 

Since this class has only static methods, but no instance methods you can also shorten the name "PhysicalConstants" to a name that better suits you, for example "P".

 PhysicalConstants P = PhysicalConstants.physicalConstants; // kind of "alias"
 P.twopi;
 P.c_light;
 P.h_Planck;
 

pi

public static final double pi

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Constant Field Values

twopi

public static final double twopi

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Constant Field Values

halfpi

public static final double halfpi

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Constant Field Values

pi2

public static final double pi2

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Constant Field Values

Avogadro

public static final double Avogadro

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Constant Field Values

c_light

public static final double c_light

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Constant Field Values

c_squared

public static final double c_squared

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Constant Field Values

h_Planck

public static final double h_Planck

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Constant Field Values

hbar_Planck

public static final double hbar_Planck

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Constant Field Values

hbarc

public static final double hbarc

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Constant Field Values

hbarc_squared

public static final double hbarc_squared

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Constant Field Values

electron_charge

public static final double electron_charge

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Constant Field Values

e_squared

public static final double e_squared

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Constant Field Values

electron_mass_c2

public static final double electron_mass_c2

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Constant Field Values

proton_mass_c2

public static final double proton_mass_c2

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Constant Field Values

neutron_mass_c2

public static final double neutron_mass_c2

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Constant Field Values

amu_c2

public static final double amu_c2

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Constant Field Values

amu

public static final double amu

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Constant Field Values

mu0

public static final double mu0

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Constant Field Values

epsilon0

public static final double epsilon0

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Constant Field Values

elm_coupling

public static final double elm_coupling

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Constant Field Values

fine_structure_const

public static final double fine_structure_const

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Constant Field Values

classic_electr_radius

public static final double classic_electr_radius

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Constant Field Values

electron_Compton_length

public static final double electron_Compton_length

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Constant Field Values

Bohr_radius

public static final double Bohr_radius

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Constant Field Values

alpha_rcl2

public static final double alpha_rcl2

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Constant Field Values

twopi_mc2_rcl2

public static final double twopi_mc2_rcl2

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Constant Field Values

k_Boltzmann

public static final double k_Boltzmann

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Constant Field Values

STP_Temperature

public static final double STP_Temperature

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Constant Field Values

STP_Pressure

public static final double STP_Pressure

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Constant Field Values

kGasThreshold

public static final double kGasThreshold

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Constant Field Values

universe_mean_density

public static final double universe_mean_density

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Constant Field Values