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Albert Einstein's letter to FDR
Source1 Albert Einstein signs a letter from Leó Szilárd, and sends it to the president, who was FDR. This letter warns FDR of the German nuclear program. The result is that America starts its own nueclear program. -
WW2 Starts
source1With the war starting, the nuclear program gets more funding, become bigger, and more secretive. Eventually it is named the Manhattan Project. This project's ultimate goal was to create a bomb that could end WW2 -
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Period: to
Manhattan Project
Source1The Manhattan Project lasted for 4 years. During this time over 2 billion dollars was spent in the effort to create the bomb. -
Different Methods of seperating U-235 and U-238
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