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The Bethe-Feynman efficiency formula, a simple method for calculating the yield of a fission bomb, was first derived in 1943 after development in 1942. Aspects ... - read more

6 Jun 2014 ... Most of Feynman's stories about the bomb are about his hijinks. ... to criticality and implosion efficiency (including the Bethe-Feynman formula) ... - read more

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