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It released the equivalent energy of 16 ± 2 kilotons of TNT (66.9 ± 8.4 TJ). [139] ... Perhaps as many as 200 people from Hiroshima sought refuge in Nagasaki.
This does not take into account the fact that the energy should only be about half this value for a hemispherical blast, but this very simple argument did agree to within 10% with the official value of the bomb's yield in 1950, which was 20 kilotons of TNT (84 TJ) (see G. I. Taylor, Proc. Roy. Soc. London A 200, pp. 235–247 (1950)).
Little Boy was a type of atomic bomb created by the United States as part of the Manhattan Project during World War II.The name is also often used to describe the specific bomb (L-11) used in the bombing of the Japanese city of Hiroshima by the Boeing B-29 Superfortress Enola Gay on 6 August 1945, making it the first nuclear weapon used in warfare, and the second nuclear explosion in history ...
Modern weapons have yields of 1 or up to 10 kilotons (a unit of explosive power equivalent to 1,000 tons of TNT). For comparison, the strategic nuclear bomb used on Hiroshima during World War II ...
The Little Boy atomic bomb dropped on Hiroshima on August 6, 1945, exploded with an energy of about 15 kilotons of TNT (63 TJ) killing between 90,000 and 166,000 people, [29] and the Fat Man atomic bomb dropped on Nagasaki on August 9, 1945, exploded with an energy of about 20 kilotons of TNT (84 TJ) killing over 60,000. [29]
(21 kilotons, 1945–1950) Mark 4 – Post-war "Fat Man" redesign. Bomb designed with weapon characteristics as the foremost criteria. (1949–1953) Mark 5 – Significantly smaller high efficiency nuclear bomb. (1–120 kilotons, 1952–1963) Mark 6 – Improved version of Mk-4. (8–160 kilotons, 1951–1962) Mark 7 – Multi-purpose tactical ...
In comparison, the atomic (fission) bombs dropped by the Enola Gay on Hiroshima (Little Boy, a gun-type atomic bomb) and on Nagasaki by Bockscar (Fat Man, an implosion-type atomic bomb) had blast yields of the equivalents of 15 and 21 kilotons of TNT, respectively.
At the time, Hiroshima’s population was approximately 300,000. The atomic bomb immediately killed 80,000 and injured 35,000 more. By the end of 1945, 60,000 more people had died as a result of ...