EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY
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Swiss-German theoretical physicist Albert Einstein (1879-1955, left) with the German-US mathematician and electrical engineer Charles Proteus Steinmetz (1865-1923). Einstein received the 1921 Nobel Prize in Physics for work on the photoelectric effect. However, he is best known for his paper on the special theory of relativity, which resulted in the famous equation E=mc2. Steinmetz derived mathematical theories to describe alternating current (AC), providing the basis for engineers to increase the efficiency of AC motors. This ultimately led to AC power superseding direct current (DC). Despite his congenital dwarfism, hunchback and hip dysplasia, he had a full career, holding several professorships and over 200 patents.
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