The 'Fat Man' was the plutonium-fueled implosion-design atomic bomb dropped on Nagasaki, Japan on August 9, 1945 by the United States. It was dropped by the B-29 named "Bockscar", and had a yield of...
The difference was little boy was droped on Hiroshima in world war 2, it is much smaller than the fat man used on Nagasaki and the little boy uses uranium to compress it. The fat man uses plutonium...