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Oppenheimer, J. Robert
- An American physicist of the twentieth century. Oppenheimer led the research and development of the atomic bomb (see also atomic bomb ) and was head of the Manhattan Project .
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Notes
In the early 1950s, Oppenheimer's opposition to building the hydrogen bomb and his past association with leftists led to a hearing regarding his security clearance. Although the committee found that he was a “loyal citizen,” his security clearance was not restored, and he was barred from government research. Oppenheimer's chief opponent in the scientific community at this time was Edward Teller .
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