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Physical constant

Electron Mass

The rest mass of an electron.

m_e = 9.10938×10⁻³¹ kg

Other constants

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