Rydberg Constant -- from Eric Weisstein's World of Physics

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Rydberg Constant

The constant appearing in the Balmer formula for spectral lines of the hydrogen atom. For a hydrogen atom, the effective mass must be taken as the reduced mass of the proton and electron. In MKS, this gives the Rydberg constant

where is the electron mass, the proton mass, e the electron charge, c the speed of light, is the permittivity of free space, and h is Planck's constant.

Balmer Formula, Bohr Model, Hydrogen Atom, Hydrogen Lines, Rydberg