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Dr. Robert A. Millikan: Fundamental Measurements in Electricity and Radiation, 1937

Important Theories

Robert Millikan's accomplishments were the design and fine-tuning of experiments which unambiguously confirmed the most important scientific theories of his time, providing the implications for atomic theory.

His oil drop experiment confirmed the existence of the electron and accurately determined its charge. His experiment on the photoelectric effect established the wave/particle dual nature of light.