Package dev.nm.misc
Class PhysicalConstants
- java.lang.Object
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- dev.nm.misc.PhysicalConstants
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public final class PhysicalConstants extends Object
A collection of fundamental physical constants. Physical constants are taken (unless otherwise noted) from the NIST Reference on Constants, Units and Uncertainty. These values are represented in SI units.
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Field Summary
Fields Modifier and Type Field Description static double
ABSOLUTE_ZERO_T0
The absolute zero temperature in Celsius (°C).static double
ATOMIC_MASS_MU
The atomic mass constant \(m_u\) in kilograms (kg).static double
AVOGADRO_NA
The Avogadro constant \(N_A\), \(L\) in units per mole (mol-1).static double
BOLTZMANN_K
The Boltzmann constant \(k\) in joule per kelvin (J K-1).static double
CHARACTERISTIC_IMPEDANCE_Z0
The characteristic impedance of vacuum \(Z_0\) in ohms (Ω).static double
CONDUCTANCE_QUANTUM_G0
The conductance quantum \(G_0\) in siemens (s).static double
ELECTRIC_EPSILON0
The electric permittivity or electrical constant \(\epsilon_0\) in farads per meter (F m-1).static double
ELECTRON_MASS_ME
The electron rest mass \(m_e\) in kilograms (kg).static double
ELECTRON_VOLT_EV
The electron volt \(eV\) in joules (J).static double
ELEMENTARY_CHARGE_E
The elementary charge \(e\) in coulombs (C).static double
FARADAY_F
The Faraday constant \(F\) in coulombs per mole (C mol-1).static double
FINE_STRUCTURE_ALPHA
The fine-structure constant \(\alpha\) (dimensionless).static double
GRAVITATIONAL_G
The Newtonian constant of gravitation \(G\) in meters cubed per kilogram per second squared (m3 kg-1 s-2).static double
INVERSE_FINE_STRUCTURE_ALPHA1
The inverse fine-structure constant \(\alpha^{-1}\) (dimensionless).static int
LIGHT_SPEED_C
The speed of light in a vacuum \(c\), \(c_0\) in meters per second (m s-1).static double
MAGNETIC_FLUX_QUANTUM_PHI0
The magnetic flux quantum \(\Phi_0\) in webers (Wb).static double
MAGNETIC_MU0
The magnetic constant \(\mu_0\) in henries per meter (H m-1) or newtons per ampere squared (N A-2).static double
MOLAR_GAS_R
The molar gas constant \(R\) in joule per kelvin mole (J mol-1 K-1).static double
NEUTRON_MASS_M
The neutron mass in kilograms (kg).static double
PLANCK_H
The Planck constant \(h\) in joule seconds (J s).static double
PLANCK_REDUCED_HBAR
The reduced Planck constant (or Dirac constant) \(\hbar\), defined as the Planck constant divided by 2π, in joule seconds (J s).static double
PROTON_ELECTRON_MASS_RATIO
The proton-electron mass ratio \(m_p/m_e\) (dimensionless).static double
PROTON_MASS_MP
The proton mass \(m_p\) in kilograms (kg).static double
RYDBERG_RINF
The Rydberg constant \(R_{\infty}\) in reciprocal meter (m-1).static double
STEFAN_BOLTZMANN_SIGMA
The Stegan-Boltzmann constant \(\sigma\) in (W m-2 K-4).
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Field Detail
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ABSOLUTE_ZERO_T0
public static final double ABSOLUTE_ZERO_T0
The absolute zero temperature in Celsius (°C).
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ATOMIC_MASS_MU
public static final double ATOMIC_MASS_MU
The atomic mass constant \(m_u\) in kilograms (kg).- See Also:
- Constant Field Values
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AVOGADRO_NA
public static final double AVOGADRO_NA
The Avogadro constant \(N_A\), \(L\) in units per mole (mol-1).- See Also:
- Constant Field Values
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BOLTZMANN_K
public static final double BOLTZMANN_K
The Boltzmann constant \(k\) in joule per kelvin (J K-1).- See Also:
- Constant Field Values
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CHARACTERISTIC_IMPEDANCE_Z0
public static final double CHARACTERISTIC_IMPEDANCE_Z0
The characteristic impedance of vacuum \(Z_0\) in ohms (Ω).- See Also:
- Constant Field Values
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CONDUCTANCE_QUANTUM_G0
public static final double CONDUCTANCE_QUANTUM_G0
The conductance quantum \(G_0\) in siemens (s).- See Also:
- Constant Field Values
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ELECTRIC_EPSILON0
public static final double ELECTRIC_EPSILON0
The electric permittivity or electrical constant \(\epsilon_0\) in farads per meter (F m-1).- See Also:
- Constant Field Values
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ELECTRON_MASS_ME
public static final double ELECTRON_MASS_ME
The electron rest mass \(m_e\) in kilograms (kg).- See Also:
- Constant Field Values
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ELECTRON_VOLT_EV
public static final double ELECTRON_VOLT_EV
The electron volt \(eV\) in joules (J).- See Also:
- Constant Field Values
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ELEMENTARY_CHARGE_E
public static final double ELEMENTARY_CHARGE_E
The elementary charge \(e\) in coulombs (C).- See Also:
- Constant Field Values
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FARADAY_F
public static final double FARADAY_F
The Faraday constant \(F\) in coulombs per mole (C mol-1).- See Also:
- Constant Field Values
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FINE_STRUCTURE_ALPHA
public static final double FINE_STRUCTURE_ALPHA
The fine-structure constant \(\alpha\) (dimensionless).
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GRAVITATIONAL_G
public static final double GRAVITATIONAL_G
The Newtonian constant of gravitation \(G\) in meters cubed per kilogram per second squared (m3 kg-1 s-2).- See Also:
- Constant Field Values
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INVERSE_FINE_STRUCTURE_ALPHA1
public static final double INVERSE_FINE_STRUCTURE_ALPHA1
The inverse fine-structure constant \(\alpha^{-1}\) (dimensionless).- See Also:
- Constant Field Values
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LIGHT_SPEED_C
public static final int LIGHT_SPEED_C
The speed of light in a vacuum \(c\), \(c_0\) in meters per second (m s-1).- See Also:
- Constant Field Values
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MAGNETIC_MU0
public static final double MAGNETIC_MU0
The magnetic constant \(\mu_0\) in henries per meter (H m-1) or newtons per ampere squared (N A-2).- See Also:
- Constant Field Values
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MAGNETIC_FLUX_QUANTUM_PHI0
public static final double MAGNETIC_FLUX_QUANTUM_PHI0
The magnetic flux quantum \(\Phi_0\) in webers (Wb).- See Also:
- Constant Field Values
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MOLAR_GAS_R
public static final double MOLAR_GAS_R
The molar gas constant \(R\) in joule per kelvin mole (J mol-1 K-1).- See Also:
- Constant Field Values
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NEUTRON_MASS_M
public static final double NEUTRON_MASS_M
The neutron mass in kilograms (kg).- See Also:
- Constant Field Values
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PLANCK_H
public static final double PLANCK_H
The Planck constant \(h\) in joule seconds (J s).- See Also:
- Constant Field Values
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PLANCK_REDUCED_HBAR
public static final double PLANCK_REDUCED_HBAR
The reduced Planck constant (or Dirac constant) \(\hbar\), defined as the Planck constant divided by 2π, in joule seconds (J s).- See Also:
- Constant Field Values
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PROTON_ELECTRON_MASS_RATIO
public static final double PROTON_ELECTRON_MASS_RATIO
The proton-electron mass ratio \(m_p/m_e\) (dimensionless).- See Also:
- Constant Field Values
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PROTON_MASS_MP
public static final double PROTON_MASS_MP
The proton mass \(m_p\) in kilograms (kg).- See Also:
- Constant Field Values
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RYDBERG_RINF
public static final double RYDBERG_RINF
The Rydberg constant \(R_{\infty}\) in reciprocal meter (m-1).- See Also:
- Constant Field Values
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STEFAN_BOLTZMANN_SIGMA
public static final double STEFAN_BOLTZMANN_SIGMA
The Stegan-Boltzmann constant \(\sigma\) in (W m-2 K-4).- See Also:
- Constant Field Values
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