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Physical constant

Rydberg Constant

Sets the wavelengths of hydrogen's spectral lines.

R∞ = 1.0973731×10⁷ 1/m

Other constants

Speed of Light Gravitational Constant Planck Constant Reduced Planck Constant Elementary Charge Boltzmann Constant Avogadro Constant Gas Constant Vacuum Permittivity Vacuum Permeability Electron Mass Proton Mass