"Gadget," the first atomic bomb — a 6-foot sphere with a grapefruit-sized Plutonium core, covered in cables — was born out of the Albert Einstein-inspired Manhattan Project, and was detonated ...

Leaflets dropped on cities in Japan warning civilians about the atomic bomb, dropped c. August 6, 1945. Aftermath of the August 6, 1945 Atomic Bomb blast in Hiroshima, 1946. Library of Congress ...