Mottelson, Benjamin Roy, 1926–, Danish physicist, b. Chicago, Ph.D. Harvard, 1950. Raised and educated in the United States, he moved to Denmark, where he began work as a nuclear physicist. Mottelson and colleague Aage Bohr helped prove the theories of James Rainwater regarding the structure of atomic nuclei. The trio shared the 1975 Nobel Prize in Physics for their work.
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