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Robert Andrews Millikan Created 2026-10-18 Updated 2026-10-31
An experimental physicist known for measurements of electron charge and the photoelectric effect. The Millikan photoelectric experiment describes the apparatus and stopping-voltage measurements behind his 1916 test.[ref]
Robert Andrews Millikan Collection by National Archives and Records Administration. Collection description: full name, 1868–1953 and experimental-physics work
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Portrait of Robert Andrews Millikan
. Unknown photographer; Smithsonian Institution Libraries, Dibner Library, Scientific Identity collection, SIL14-M004-03. No known copyright restrictions, as supplied by Smithsonian through Flickr Commons and reviewed on Commons., via Wikimedia Commons. Source.%2C_Physicist.jpg){kind=link}