Famous Firsts: Nuclear Bomb (16th July 1945)

Source image: US Govt. Defense Threat Reduction Agency/Wikicommons

Trinity was the code name of the first detonation of a nuclear weapon, conducted by the United States Army on July 16, 1945, as a result of the Manhattan Project. Trinity used an implosion-design plutonium device, informally nicknamed "The Gadget". Using the same conceptual design, the Fat Man device was detonated over Nagasaki, Japan, on August 9, 1945. The Trinity detonation produced the explosive power of about 20 kilotons of TNT (84 TJ).

Source image: Jack W. Aeby/Wikicommons

(source: wikipedia, more images: wikicommons)