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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Nier and mass spectroscopy equipment. US physicist Alfred Otto Carl Nier (1911-1994) with mass spectroscopy equipment. Nier initially studied electrical engineering, but then moved into graduate studies in physics and worked on mass spectroscopy. His work in the 1930s on isotopes of uranium was later used in measurements of the age of the Earth. During World War II, he was part of the Manhattan Project, helping to monitor uranium production for the first atomic bombs He was elected a member of the National Academy of Sciences (1950), and for his work on uranium received the Field and Franklin Award (1985).
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