“Suddenly,” he continued, “it felt as if you were trapped in a ball of fire.” The force and temperature of the bomb was enough to destroy an estimated 60,000 buildings within a 1.6 kilometre radius. Within one billionth of a second the impact site reached temperatures 10,000 times hotter than the sun’s surface. “Being near the station, I thought the train exploded,” Ohari remembered. “Little Boy” detonated 240 metres over the Shima Surgical Clinic the destruction of Hiroshima was immediate and cataclysmic. Like thousands of other Hiroshima residents, he was unaware of the sudden force that was about to devastate the city. Below, 14-year-old Vancouver-born Joe Ohari was buying a tram ticket to go to school. The bomb, nicknamed “Little Boy”, took 44 seconds to drop. On 6 August 1945 at 8:15 a.m., the Enola Gay dropped the first atomic weapon to be used on a populated target. The test bomb’s plutonium core was assembled by a Canadian, Winnipeg-born nuclear physicist Louis Slotin. “The Gadget”) in the New Mexico desert, better known as the Trinity test.
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On 16 July 1945, they tested the first atomic weapon (a.k.a.
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The Manhattan Project – a joint nuclear science and research team composed of scientists from the United States, Great Britain and Canada – took three years to develop the atomic bomb. This August marks 75 years since two American B-29 Superfortress bombers dropped the first nuclear weapons used in wartime. Hijiyama Elementary School, Hiroshima City, 1952ĭuring the Cold War, people feared the devastating effects of nuclear war many remembered the 1945 atomic attacks on the Japanese cities of Hiroshima and Nagasaki.