PhysicalConstants (Parallel Colt 0.10.1

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

Author:

wolfgang.hoschek@cern.ch

Field Summary

Fields
Modifier and Type	Field and 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`

Method Summary
- Methods inherited from class java.lang.Object
  equals, 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
```
    See Also:
    Constant Field Values
  - twopi
```
public static final double twopi
```
    See Also:
    Constant Field Values
  - halfpi
```
public static final double halfpi
```
    See Also:
    Constant Field Values
  - pi2
```
public static final double pi2
```
    See Also:
    Constant Field Values
  - Avogadro
```
public static final double Avogadro
```
    See Also:
    Constant Field Values
  - c_light
```
public static final double c_light
```
    See Also:
    Constant Field Values
  - c_squared
```
public static final double c_squared
```
    See Also:
    Constant Field Values
  - h_Planck
```
public static final double h_Planck
```
    See Also:
    Constant Field Values
  - hbar_Planck
```
public static final double hbar_Planck
```
    See Also:
    Constant Field Values
  - hbarc
```
public static final double hbarc
```
    See Also:
    Constant Field Values
  - hbarc_squared
```
public static final double hbarc_squared
```
    See Also:
    Constant Field Values
  - electron_charge
```
public static final double electron_charge
```
    See Also:
    Constant Field Values
  - e_squared
```
public static final double e_squared
```
    See Also:
    Constant Field Values
  - electron_mass_c2
```
public static final double electron_mass_c2
```
    See Also:
    Constant Field Values
  - proton_mass_c2
```
public static final double proton_mass_c2
```
    See Also:
    Constant Field Values
  - neutron_mass_c2
```
public static final double neutron_mass_c2
```
    See Also:
    Constant Field Values
  - amu_c2
```
public static final double amu_c2
```
    See Also:
    Constant Field Values
  - amu
```
public static final double amu
```
    See Also:
    Constant Field Values
  - mu0
```
public static final double mu0
```
    See Also:
    Constant Field Values
  - epsilon0
```
public static final double epsilon0
```
    See Also:
    Constant Field Values
  - elm_coupling
```
public static final double elm_coupling
```
    See Also:
    Constant Field Values
  - fine_structure_const
```
public static final double fine_structure_const
```
    See Also:
    Constant Field Values
  - classic_electr_radius
```
public static final double classic_electr_radius
```
    See Also:
    Constant Field Values
  - electron_Compton_length
```
public static final double electron_Compton_length
```
    See Also:
    Constant Field Values
  - Bohr_radius
```
public static final double Bohr_radius
```
    See Also:
    Constant Field Values
  - alpha_rcl2
```
public static final double alpha_rcl2
```
    See Also:
    Constant Field Values
  - twopi_mc2_rcl2
```
public static final double twopi_mc2_rcl2
```
    See Also:
    Constant Field Values
  - k_Boltzmann
```
public static final double k_Boltzmann
```
    See Also:
    Constant Field Values
  - STP_Temperature
```
public static final double STP_Temperature
```
    See Also:
    Constant Field Values
  - STP_Pressure
```
public static final double STP_Pressure
```
    See Also:
    Constant Field Values
  - kGasThreshold
```
public static final double kGasThreshold
```
    See Also:
    Constant Field Values
  - universe_mean_density
```
public static final double universe_mean_density
```
    See Also:
    Constant Field Values

Class PhysicalConstants

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

physicalConstants

pi

twopi

halfpi

pi2

Avogadro

c_light

c_squared

h_Planck

hbar_Planck

hbarc

hbarc_squared

electron_charge

e_squared

electron_mass_c2

proton_mass_c2

neutron_mass_c2

amu_c2

amu

mu0

epsilon0

elm_coupling

fine_structure_const

classic_electr_radius

electron_Compton_length

Bohr_radius

alpha_rcl2

twopi_mc2_rcl2

k_Boltzmann

STP_Temperature

STP_Pressure

kGasThreshold

universe_mean_density