EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY
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Johannes Rydberg (1854-1919), Swedish physicist and spectroscopist. Rydberg is most famous for the Rydberg formula, which used the Rydberg constant. The Rydberg formula is used in atomic physics to describe the relation between the wavelengths in spectral lines of chemical elements. Rydberg's work in this field provided a basis for determining the structure of the atom. He also worked on reorganising the periodic table.
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