Fat Man

The Fat Man was a nuclear bomb codenamed after its round and wide shape, dropped on Nagasaki on August 9, 1945, as part of the United States' atomic bombing campaign. The bomb was an implosion-type nuclear weapon with a solid plutonium core, using plutonium manufactured at the Hanford Site. The Fat Man was the second of two nuclear weapons used in warfare, following the Little Boy bomb dropped on Hiroshima, and was part of a series of nuclear bombs developed during the Manhattan Project.learn more on wikipedia