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Richard Feynman was a physicist who was born in Far Rockaway, near New York City, in 1918. He lived there until he left to attend university at the Michigan Institute of Technology. He studied there for four years, and then went to Princeton University where he fi ....

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.... not escape, and calculating exactly how much uranium or plutonium would be needed. He was very successful in this early work, and was quickly promoted to one of the directors of the theoretical division. Feynman had written that there were four main questions that needed to be answered before the work could progress. 1. How big must the bombs be? What is the critical mass and radius for each material? 2. What material would best serve as a tamper? 3. How pure would the uranium or plutonium have to be? 4. How much heat, light, and shock would be created in a nuclear explosion? This work was very difficult, mainly because the materials (uranium a ....