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G. B. Pegram
American physicist (1876-1958) · United States · On the map · Scientists · Died at 81
George Braxton Pegram was an American physicist who played a key role in the technical administration of the Manhattan Project. He graduated from Trinity College in 1895, and taught high school before becoming a teaching assistant in physics at Columbia University in 1900.
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A typical day, 30 days to 10 August 2026
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He was to spend the rest of his working life at Columbia, taking his doctorate there in 1903 and becoming a full professor in 1918. His administrative career began as early as 1913 when he became the department's executive officer. By 1918, he was Dean of the Faculty of Applied Sciences but he resigned in 1930 to relaunch his research activities, performing many meticulous measurements on the properties of neutrons with John R. Dunning. He was also chairman of Columbia's physics department from 1913 to 1945.
