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 Stark (1874-1957), German physicist. The main areas of Stark's work were: electric currents in gases, spectroscopic analysis and chemical valency. He won the 1919 Nobel Prize for Physics for his discovery of an optical Doppler effect and the observation that spectral lines split in an electric field (called the Stark Effect). During the Nazi regime, Stark was part of the failed Deutsche Physik (Aryan Physics) movement that labelled the theories of Einstein as Jewish Physics. Photographed in 1937.
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