MSNBCW The Rachel Maddow Show April 3, 2015
boom. the hiroshima bomb in 1945, it was basically structurally speaking, a gun. inside the outer casing that looked like a cartoon version of a bomb was basically a gun mechanism used an explosive charge to fire a piece of highly enriched uranium into another piece of highly enriched uranium. and that created a nuclear reaction and a nuclear explosion. that was the first bomb. the second bomb the u.s. dropped on japan three days later, that one did it in a different way. the nagasaki bomb again used an explosive charge but in this case it was used for a different material. the nagas...
Source: archive.org