The NIST Reference on Constants, Units and Uncertainty

Fundamental Physical Constants

Constants
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alpha particle mass in u
alpha particle relative atomic mass
atomic mass constant
atomic mass constant energy equivalent
atomic mass constant energy equivalent in MeV
atomic mass unit-electron volt relationship
atomic mass unit-hartree relationship
atomic mass unit-hertz relationship
atomic mass unit-inverse meter relationship
atomic mass unit-joule relationship
atomic mass unit-kelvin relationship
atomic mass unit-kilogram relationship
atomic unit of 1st hyperpolarizability
atomic unit of 2nd hyperpolarizability
atomic unit of action
atomic unit of charge
atomic unit of charge density
atomic unit of current
atomic unit of electric dipole moment
atomic unit of electric field
atomic unit of electric field gradient
atomic unit of electric polarizability
atomic unit of electric potential
atomic unit of electric quadrupole moment
atomic unit of energy
atomic unit of force
atomic unit of length
atomic unit of magnetic dipole moment
atomic unit of magnetic flux density
atomic unit of magnetizability
atomic unit of mass
atomic unit of momentum
atomic unit of permittivity
atomic unit of time
atomic unit of velocity
deuteron mass in u
deuteron relative atomic mass
electron mass in u
electron relative atomic mass
electron volt-atomic mass unit relationship
hartree-atomic mass unit relationship
helion mass in u
helion relative atomic mass
hertz-atomic mass unit relationship
inverse meter-atomic mass unit relationship
joule-atomic mass unit relationship
kelvin-atomic mass unit relationship
kilogram-atomic mass unit relationship
muon mass in u
neutron mass in u
neutron relative atomic mass
neutron-proton mass difference in u
proton mass in u
proton relative atomic mass
quantum of circulation times 2
reduced Planck constant times c in MeV fm
Rydberg constant times c in Hz
Rydberg constant times hc in eV
Rydberg constant times hc in J
tau mass in u
triton mass in u
triton relative atomic mass
unified atomic mass unit


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