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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John Bardeen (1908-1991), US physicist and electrical engineer, holding his original transistor. Bardeen was the first man to win the Nobel Prize for Physics on two occasions. In 1956 he was awarded the prize for his work on developing the first transistor. In 1972 he was again awarded the prize for his work on superconductivity. He shared the second prize with his co-workers Leon Cooper and John Schrieffer. Their BCS theory showed how quantum theory could give rise to effects that are visible even at macroscopic sizes.
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