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- Speed of light in vacuum.
- exact
-
- Permeability of vacuum.
- exact
-
- Permittivity of vacuum.
- exact
-
- Newtonian constant of gravitation.
- 128 ppm
-
- Planck constant.
- 0.60 ppm
-
-
-
- h/(2π).
- 0.60 ppm
-
-
-
- Elementary charge.
- 0.30 ppm
-
- Quantized Hall resistance, h/(e^2).
- 0.045 ppm
-
- Bohr Magneton.
- 0.34 ppm
-
- Nuclear Magneton.
- 0.34 ppm
-
- Inverse fine structure constant.
- 0.045 ppm
-
- Rydeberg constant.
- 0.0012 ppm
-
- Rydeberg constant in hertz.
- 0.0012 ppm
-
- Rydeberg constant in joules.
- 0.60 ppm
-
- Rydeberg constant in eV.
- 0.30 ppm
-
- Bohr radius.
- 0.045 ppm
-
- Electron mass.
- 0.59 ppm
-
- Electron mass in eV.
- 0.30 ppm
-
- Compton wavelength of the electron.
- 0.089 ppm
-
- Magnetic moment of the electron.
- 0.34 ppm
-
- g-factor of the electron.
- 0.00001 ppm
-
- Muon mass.
- 0.61 ppm
-
- Muon mass in eV.
- 0.32 ppm
-
- Magnetic moment of the muon.
- 0.34 ppm
-
- g-factor of the muon.
- 0.0084 ppm
-
- Proton mass.
- 0.59 ppm
-
- Proton mass in eV.
- 0.30 ppm
-
- Compton wavelength of the proton.
- 0.089 ppm
-
- Magnetic Moment of the proton.
- 0.34 ppm
-
- Neutron mass.
- 0.59 ppm
-
- Neutron mass in eV.
- 0.30 ppm
-
- Compton wavelength of the neutron.
- 0.089 ppm
-
- Magnetic moment of the neutron.
- 0.34 ppm
- The neutron magnetic dipole is antiparallel to that of the proton.
-
- Avogadro constant.
- 0.59 ppm
-
- Atomic mass constant.
- 0.59 ppm
-
- Faraday constant.
- 0.30 ppm
-
- Molar gas constant.
- 8.4 ppm
-
- Boltzmann constant.
- 8.5 ppm
-
- Molar volume (ideal gas), RT/p (at 273.15 K, 101325 Pa).
- 8.4 ppm
-
- Stefan-
- Boltzmann constant.
- 34 ppm
-
- Wien displacement law constant, hc/k/4.96511423...
- 8.4 ppm
-
- Electron volt.
- 0.030 ppm
-
- Atomic mass unit (unified).
- 0.59 ppm
-
- Standard atmosphere.
- exact
-
- Standard acceleration of gravity.
- exact
-
- Temperature corresponding to 0 °C.
- exact
-
-