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Rydberg, Johannes Robert (1854–1919)




Johannes Rydberg
Swedish chemist who classified optical spectra and developed (1890) empirical formulae for spectral lines, using a constant (1.097 × 107 m-1) now known as the Rydberg's constant (symbol R). He also studied hydrogen line wavelengths (see hydrogen spectrum). The Rydberg atom is a highly excited hydrogen atom that exhibits chaotic behavior in a strong magnetic field.


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   • CHEMISTS