Package cern.clhep

Class PhysicalConstants

java.lang.Object

cern.clhep.PhysicalConstants

public class PhysicalConstants
extends java.lang.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

Field Summary

Fields

Modifier and Type	Field	Description
static double	alpha_rcl2
static double	amu
static double	amu_c2
static double	Avogadro
static double	Bohr_radius
static double	c_light
static double	c_squared
static double	classic_electr_radius
static double	e_squared
static double	electron_charge
static double	electron_Compton_length
static double	electron_mass_c2
static double	elm_coupling
static double	epsilon0
static double	fine_structure_const
static double	h_Planck
static double	halfpi
static double	hbar_Planck
static double	hbarc
static double	hbarc_squared
static double	k_Boltzmann
static double	kGasThreshold
static double	mu0
static double	neutron_mass_c2
static PhysicalConstants	physicalConstants	Little trick to allow for "aliasing", that is, renaming this class.
static double	pi
static double	pi2
static double	proton_mass_c2
static double	STP_Pressure
static double	STP_Temperature
static double	twopi
static double	twopi_mc2_rcl2
static double	universe_mean_density

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	PhysicalConstants()	Makes this class non instantiable, but still let's others inherit from it.

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

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

Constructor Detail

PhysicalConstants

protected PhysicalConstants()

Makes this class non instantiable, but still let's others inherit from it.