gov.nist.microanalysis.EPQLibrary
Class PhysicalConstants

java.lang.Object
  gov.nist.microanalysis.EPQLibrary.PhysicalConstants

public class PhysicalConstants
extends java.lang.Object

Precise values of some common physical constants in SI units. These are based on the table at http://physics.nist.gov/cuu/Constants/Table/allascii.txt which is replicated at the bottom of the Java source file.

Copyright: Pursuant to title 17 Section 105 of the United States Code this software is not subject to copyright protection and is in the public domain

Company: National Institute of Standards and Technology

Version:

1.0

Author:

Nicholas W. M. Ritchie

Field Summary

static double	AvagadroNumber AvagadroNumber - Avagadro's number (As in "I have ...")
static double	BohrRadius BohrRadius - The Bohr radius in meters.
static double	BoltzmannConstant BoltzmannConstant - kB, Boltzmann's constant in J/K
static double	ClassicalElectronRadius ClassicalElectronRadius - The classical electron radius in meters
static double	ElectronCharge ElectronCharge - The charge of a single electron in C
static double	ElectronMass ElectronMass - The electron mass in kg
static double	ElectronRestMass ElectronRestMass - The energy equivalent mass of an electron in Joules
static double	FineStructure FineStructure - The atomic fine structure constant (dimensionless)
static double	GravitationConstant GravitationConstant - G in kg m^2
static double	IcePoint IcePoint - The temperature at which water freezes at StandardAtmosphere
static double	NeutronMass NeutronMass - The neutron mass in kg
static double	PermeabilityOfFreeSpace PermeabilityOfFreeSpace - Permeability of free space in N/(A^2)
static double	PermittivityOfFreeSpace PermittivityOfFreeSpace - Permittivity of free space in F/m
static double	PlanckConstant PlanckConstant - Planck's constant in J s
static double	PlanckLength PlanckLength - The Plank length in m
static double	PlanckMass PlanckMass - The Plank mass in kg
static double	PlanckReduced PlanckReduced - hBar, Plank's constant over 2pi in J s
static double	PlanckTemperature PlanckTemperature - The Planck temperature (dimensionless)
static double	PlanckTime PlanckTime - The Planck time in seconds
static double	ProtonMass ProtonMass - The proton mass in kg
static double	RydbergEnergy RydbergEnergy - The Rydberg constant in energy units (Joules)
static double	SpeedOfLight SpeedOfLight - C, the speed of light in m/s
static double	StandardAtmosphere StandardAtmosphere - The standard atmospheric pressure
static double	UnifiedAtomicMass UnifiedAtomicMass - 1 AMU in kg

Constructor Summary

PhysicalConstants()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

AvagadroNumber

public static final double AvagadroNumber

AvagadroNumber - Avagadro's number (As in "I have ...")

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Constant Field Values

SpeedOfLight

public static final double SpeedOfLight

SpeedOfLight - C, the speed of light in m/s

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Constant Field Values

ElectronCharge

public static final double ElectronCharge

ElectronCharge - The charge of a single electron in C

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Constant Field Values

PlanckConstant

public static final double PlanckConstant

PlanckConstant - Planck's constant in J s

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Constant Field Values

PlanckReduced

public static final double PlanckReduced

PlanckReduced - hBar, Plank's constant over 2pi in J s

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Constant Field Values

ElectronMass

public static final double ElectronMass

ElectronMass - The electron mass in kg

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Constant Field Values

ElectronRestMass

public static final double ElectronRestMass

ElectronRestMass - The energy equivalent mass of an electron in Joules

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Constant Field Values

ProtonMass

public static final double ProtonMass

ProtonMass - The proton mass in kg

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Constant Field Values

NeutronMass

public static final double NeutronMass

NeutronMass - The neutron mass in kg

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Constant Field Values

UnifiedAtomicMass

public static final double UnifiedAtomicMass

UnifiedAtomicMass - 1 AMU in kg

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Constant Field Values

PermittivityOfFreeSpace

public static final double PermittivityOfFreeSpace

PermittivityOfFreeSpace - Permittivity of free space in F/m

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Constant Field Values

PermeabilityOfFreeSpace

public static final double PermeabilityOfFreeSpace

PermeabilityOfFreeSpace - Permeability of free space in N/(A^2)

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Constant Field Values

BoltzmannConstant

public static final double BoltzmannConstant

BoltzmannConstant - kB, Boltzmann's constant in J/K

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Constant Field Values

GravitationConstant

public static final double GravitationConstant

GravitationConstant - G in kg m^2

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Constant Field Values

PlanckLength

public static final double PlanckLength

PlanckLength - The Plank length in m

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Constant Field Values

PlanckMass

public static final double PlanckMass

PlanckMass - The Plank mass in kg

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Constant Field Values

PlanckTemperature

public static final double PlanckTemperature

PlanckTemperature - The Planck temperature (dimensionless)

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Constant Field Values

PlanckTime

public static final double PlanckTime

PlanckTime - The Planck time in seconds

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Constant Field Values

RydbergEnergy

public static final double RydbergEnergy

RydbergEnergy - The Rydberg constant in energy units (Joules)

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Constant Field Values

BohrRadius

public static final double BohrRadius

BohrRadius - The Bohr radius in meters.

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Constant Field Values

FineStructure

public static final double FineStructure

FineStructure - The atomic fine structure constant (dimensionless)

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Constant Field Values

ClassicalElectronRadius

public static final double ClassicalElectronRadius

ClassicalElectronRadius - The classical electron radius in meters

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Constant Field Values

IcePoint

public static final double IcePoint

IcePoint - The temperature at which water freezes at StandardAtmosphere

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Constant Field Values

StandardAtmosphere

public static final double StandardAtmosphere

StandardAtmosphere - The standard atmospheric pressure

See Also:

Constant Field Values

Constructor Detail

PhysicalConstants

public PhysicalConstants()