Man holding a component for the Trinity test

Man holding a component for the Trinity test

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This image is part of the feature The Birth Of The Atomic Bomb

Credit: LOS ALAMOS NATIONAL LABORATORY/SCIENCE PHOTO LIBRARY

Caption: Preparations for the Trinity Project, the world's first detonation of a nuclear weapon; here one of the initiators for the bomb is delivered to the McDonald Ranch Assembly Room in a shock-proof case. The test, conducted on 16 July 1945 in the Jornada del Muerto in New Mexico, involved the "Fat Man" atomic fission bomb of the type later dropped over Nagasaki, Japan. The device was triggered using an implosion method in which a slightly subcritical mass of plutonium was compressed to supercriticality by high explosives. The device weighed under 5 tonnes but had a yield equivalent to 20,000 tonnes of high explosive. Bloke in picture = technician Herbert Lehr

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Keywords: atom bomb, atomic bomb, early, energy, fat man, first, first nuclear test, historical, manhattan project, nagasaki, nuclear research, nuclear test, nuclear weapon, power, technology, trinity, weapon, weapons

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