The Amount of Plutonium in the Nagasaki Bomb

[ pour la version française ]

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This glass ball, 3.2 inches across, is the exact size of the plutonium core in the bomb that exploded over Nagasaki on August 9 1945 with a force equivalent to 22 thousand tons of TNT.

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photo by Robert Del Tredici from his book entitled
At Work In The Fields Of The Bomb (Harper and Row, 1987)

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[Breeding plutonium-239 ]
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