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Keywords: Phillipp Lenard in 1900.jpg German physicist Phillipp Lenard http //www britannica com/eb/art-12572/Philipp-Lenard articleTypeId 1 Encyclopaedia Britannica Original source AIP Emilio Segrè Visual Archives American Institute of Physics According http //www slatersoft com/EPFL/STS/HTML/node13 html this source picture is taked in 1900 Not mentioned in any source Anonymous-EU DEFAULTSORT Lenard Philipp Eduard Anton von Popular Science Monthly/Contributors Philipp Lenard Scientists in 1900 |