On august 6, 1945, during world war ii (1939-45), an american b-29 bomber dropped the world’s first deployed atomic bomb over the japanese city of hiroshima the explosion wiped out 90 percent.
Five myths about the atomic bomb the first was a demonstration of the atomic bomb prior to or instead of its military use: exploding the bomb on an uninhabited island or in the desert, in. In its first resolution, the un general assembly calls for the complete elimination of nuclear weapons and sets up a commission to deal with the problem of the atomic discovery 29 august 1949 soviet union tests its first nuclear bomb.
The atomic bomb and the end of world war ii a collection of primary sources updated national security archive posting marks 70 th anniversary of the atomic bombings of japan and the end of world war ii extensive compilation of primary source documents explores manhattan project, petitions against military use of atomic weapons, debates over japanese surrender terms, atomic targeting decisions. At the first major theoretical conference on the development of an atomic bomb hosted by j robert oppenheimer at the university of california, berkeley, participant edward teller directed the majority of the discussion towards enrico fermi's idea of a super bomb that would use the same reactions that powered the sun itself.
The following month, two other atomic bombs produced by the project, the first using uranium-235 and the second using plutonium, were dropped on hiroshima and nagasaki, japan atomic bomb: first test first atomic bomb test, near alamogordo, new mexico, july 16, 1945.
American history: developing the first atomic bombs july 13, 2011 and built the first atomic bombs president harry s truman made the decision to use these weapons against japan in august. The decision to use the atomic bomb a general account of the development of methods of using atomic energy for military purposes (washington, 1945) but in the excitement over the announcement of the first use of an atomic bomb and then of japan's surrender, many overlooked the significance of the soviet union's entry into the war.