“Science walks forward on two feet, namely theory and experiment.”

—  Robert Andrews Millikan

1923 Nobel Prize lecture Robert A. Millikan - Nobel Lecture: The Electron and the Light-Quant from the Experimental Point of View, Nobelprize.org, PDF, 30 January 2014 http://www.nobelprize.org/nobel_prizes/physics/laureates/1923/millikan-lecture.pdf,

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American physicist 1868–1953

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