Oppenheimer atomic bomb lecture
Oppenheimer atomic bomb lecture. (Julius) Robert Oppenheimer (1904-1967, far right), US physicist, became director of the Manhattan Project in 1943. This US military project developed the atom bomb. Oppenheimer is pointing to a picture of an atomic explosion. The first atomic explosion occurred in July 1945. At far left is Kenneth David Nichols (1907-2000) and an unidentified man. Major General Nichols was assigned to the Manhattan Project in 1942, as part of the Army Corps of Engineers. He became a leading atomic weapons and energy expert.