The Manhattan Project
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was the code name for the US effort during World War
II to produce the atomic bomb. It was named for the Manhattan Engineer
District of the US Army Corps of Engineers, since much of the early
research was done in New York City. It was top-secret engineering and
industrial project in the United Sta ....
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.... to such
questions as how many neutrons were emitted in each fission, which elements
would not capture the neutrons, would they moderate or reduce their
velocity, and whether only the lighter and more rare isotope of uranium (U-
235) or the common isotope (U-238) could be used. They learned that each
fission releases a few neutrons. A chain reaction, therefore, was
theoretically possible, if not too many neutrons escaped from the mass or
were captured by impurities.
In 1942 General Leslie Grove ....
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