Constants

java.lang.Object
- etomica.util.Constants

```
public final class Constants
extends java.lang.Object
```
Collection of assorted physical constants. All values are in simulations units in which time is in picoseconds, length is in Angstroms, and mass is in Daltons (amu). Also defines several enumerated-type constants. The values for most of these constants can be found at http://physics.nist.gov/cuu/Constants/index.html

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class Constants.CompassDirection
Enumerated type for the compass directions NORTH, SOUTH, EAST, WEST.

Nested Classes
Modifier and Type	Class	Description
`static class`	`Constants.CompassDirection`	Enumerated type for the compass directions NORTH, SOUTH, EAST, WEST.

Field Summary

Fields
Modifier and Type	Field	Description
`static double`	`AVOGADRO`	Avogadro's number, 6.022140857(74)e23 molecules/mole.
`static double`	`BOLTZMANN_K`	Boltzmann's constant, in (sim units)/kelvin.
`static double`	`EPSILON_0`	The permittivity of a vacuum, in (sim units) (electron charge)^2.
`static double`	`G`	The gravitational constant, in simulation units.
`static double`	`G_EARTH`	The standard acceleration of gravity on Earth.
`static double`	`LIGHT_SPEED`	The speed of light, in simulation units.
`static double`	`PLANCK_H`	Planck's constant, in simulation units.
`static double`	`RYDBERG_R`	Rydberg's constant, in Angstroms.
`static double`	`TWO_PI`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type Method Description

static void main(java.lang.String[] arg)
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static void`	`main(java.lang.String[] arg)`

- Field Detail
  - TWO_PI
```
public static final double TWO_PI
```
    See Also:
    
    Constant Field Values
  - AVOGADRO
```
public static final double AVOGADRO
```
    Avogadro's number, 6.022140857(74)e23 molecules/mole.
    
    See Also:
    
    Constant Field Values
  - G_EARTH
```
public static final double G_EARTH
```
    The standard acceleration of gravity on Earth.
    
    See Also:
    
    Constant Field Values
  - BOLTZMANN_K
```
public static final double BOLTZMANN_K
```
    Boltzmann's constant, in (sim units)/kelvin. Specifically, (daltons)(angstroms^2)(ps^-2)(kelvin^-1).
    
    See Also:
    
    Constant Field Values
  - PLANCK_H
```
public static final double PLANCK_H
```
    Planck's constant, in simulation units. Specifically, equal to approximately 39.903127 D-A^2/ps.
  - RYDBERG_R
```
public static final double RYDBERG_R
```
    Rydberg's constant, in Angstroms.
    
    See Also:
    
    Constant Field Values
  - EPSILON_0
```
public static final double EPSILON_0
```
    The permittivity of a vacuum, in (sim units) (electron charge)^2. Specifically, (ps^2)(daltons^-1)(angstroms^-3)(electrons^2).
  - LIGHT_SPEED
```
public static final double LIGHT_SPEED
```
    The speed of light, in simulation units. Equal to 2997924.58 Angstroms/picosecond
    
    See Also:
    
    Constant Field Values
  - G
```
public static final double G
```
    The gravitational constant, in simulation units. Equal to approximately 1.1e-31 A^3/ps^2/D.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - main
```
public static void main(java.lang.String[] arg)
```

Class Constants

Nested Class Summary

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

TWO_PI

AVOGADRO

G_EARTH

BOLTZMANN_K

PLANCK_H

RYDBERG_R

EPSILON_0

LIGHT_SPEED

G

Method Detail

main