Trinity was the code name of the first detonation of a nuclear device. This test was conducted by the United States Army on July 16, 1945, in the Jornada del Muerto desert about 35 miles southeast of Socorro, New Mexico, at the new White Sands Proving Ground, which incorporated the Alamogordo Bombing and Gunnery Range. The date of the test is usually considered to be the beginning of the Atomic Age. Trinity was a test of an implosion-design plutonium device.

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Trinity Test, 1945

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