Web Reference: Robert Andrews Millikan (March 22, 1868 – December 19, 1953) was an American experimental physicist who received the Nobel Prize in Physics in 1923 "for his work on the elementary charge of electricity and on the photoelectric effect." Mar 18, 2026 · Robert Millikan, American physicist honored with the Nobel Prize for Physics in 1923 for his study of the elementary electronic charge and the photoelectric effect. He is also known for his famous oil-drop experiment that led to his Nobel-winning discoveries. Robert Andrews Millikan was an American physicist who made groundbreaking discoveries in electricity, optics, and molecular physics. He determined the charge of the electron, verified Einstein's photoelectric equation, and studied cosmic radiation.
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