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Designated NMSRCP. December 20, 1968. Trinity was the code name of the first detonation of a nuclear weapon, conducted by the United States Army at 5:29 a.m. MWT [a] (11:29:21 GMT) on July 16, 1945, as part of the Manhattan Project . The test was of an implosion-design plutonium bomb, nicknamed the "gadget", of the same design as the Fat Man ...
Student. Sadako Sasaki (佐々木 禎子, Sasaki Sadako, January 7, 1943 – October 25, 1955) was a Japanese girl who became a victim of the atomic bombings of Hiroshima and Nagasaki by the United States. She was two years of age when the bombs were dropped and was severely irradiated. She survived for another ten years, becoming one of the ...
The situation dramatically changed when the Soviet Union learned of the atomic bombings of Hiroshima and Nagasaki in 1945.: 2–5 Immediately after the atomic bombing, the Soviet Politburo took control of the atomic bomb project by establishing a special committee to oversee the development of nuclear weapons as soon as possible.
Manhattan District The Trinity test of the Manhattan Project on 16 July 1945 was the first detonation of a nuclear weapon. Active 1942–1946 Disbanded 15 August 1947 Country United States United Kingdom Canada Branch U.S. Army Corps of Engineers Garrison/HQ Oak Ridge, Tennessee, U.S. Anniversaries 13 August 1942 Engagements Allied invasion of Italy Allied invasion of France Allied invasion of ...
The Hiroshima Maidens ( Japanese: 原爆乙女 ( Genbaku otome ); lit. "atomic bomb maidens") are a group of 25 Japanese women who were school age girls when they were seriously disfigured as a result of the thermal flash of the fission bomb dropped on Hiroshima on the morning of August 6, 1945. They subsequently went on a highly publicized ...
The Atomic Bomb Casualty Commission (ABCC) (Japanese:原爆傷害調査委員会, Genbakushōgaichōsaiinkai) was a commission established in 1946 in accordance with a presidential directive from Harry S. Truman to the National Academy of Sciences-National Research Council to conduct investigations of the late effects of radiation among the atomic-bomb survivors in Hiroshima and Nagasaki.
Total weight of nuclear material and bomb was 98.8 - 100.2 kg Hiroshima's "Little Boy" gravity bomb: 13–18 54–75 Gun type uranium-235 fission bomb (the first of the two nuclear weapons that have been used in warfare). 64 kg of Uranium-235, about 1.38% of the uranium fissioned Nagasaki's "Fat Man" gravity bomb 19–23 79–96
