![]() ![]() Then three days later, on August 9, 1945, Major Sweeney proceeded to Nagasaki in the Bockscar and dropped the heavy plutonium implosion weapon, “Fat Man,” which was designed to cause a 22-kiloton blast and was more potent than the bomb detonated at Hiroshima. The weapon obliterated about five square miles of Hiroshima. It detonated 2,000 feet above the city in a blast equivalent to 12–15,000 tons of trinitrotoluene (TNT). On August 6, 1945, at 8:15 am (US time), Colonel Paul Tibbets piloted the Enola Gay and then dropped Little Boy on Hiroshima by parachute. Sweeney carried out the Hiroshima and Nagasaki bombings, together with their respective crews, in silver-plated versions of the “Boeing B-29 Super fortress,” thus the “Enola Gay” and the “Bockscar.” Read More: Timeline of Major Events in World War IIĬolonel Paul Warfield Tibbets Jr and Major Charles W. Some of those scientists included Edward Teller, Leo Szilard, Enrico Fermi, and Ernest Orlando Lawrence. ![]() Oppenheimer had a team of renowned physicist and other scientists that worked around the clock to realize dream of the world’s first nuclear weapon. However, the prominent American physicist Julius Robert Oppenheimer was the head of the team developing those weapons. Military personnel and Scientists involved in the Manhattan Project They were products of the codenamed US nuclear weapon initiative, the Manhattan Project, a three-year top-secret project that was the biggest scientific endeavor ever. “Fat Man” was a plutonium implosion nuclear weapon, while “Little Boy” was a uranium gun-based fission tool. The Americans dubbed the first atomic bomb “Little Boy” and the second bomb “Fat Man,” reflecting their disparate sizes and levels of force. They were two separate atomic bomb attacks thus, the bombing of Hiroshima occurred on August 6, 1945, and then the bombing of Nagasaki on August 9, 1945. In the article below, World History Edu explores the history of the bombing of those two Japanese cities, including the reason why the United States took the decision to unleash a never-before-used weapon. Those bombings are credited with effectively bringing an end to World War II, albeit at a horrific cost to the Japanese population and heralded the beginning of the nuclear age. The bombing of Hiroshima and Nagasaki were American nuclear attacks on the Japanese towns of Hiroshima and Nagasaki in August 1945. ![]()
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