7.05 - What Does It Mean to Be In An Atomic Age The United States dropped two Atomic bombs on the cities of Hiroshima and Nagasaki in 1945 bringing

7.05 - What Does It Mean to Be In An Atomic Age The United...

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What Does It Mean to Be In An Atomic Age?The United States dropped twoAtomicbombs on the cities of Hiroshimaand Nagasakiin 1945, bringing about the surrender of Japan and the end of World War II in the Pacific. Hundreds of thousands of Japanese people died when these bombs were dropped. The bombing took place after the United States had issued thePotsdam Declaration, anultimatumto Japan on July 26th that threatened prompt and utter destruction if the Japanese did not surrender. Emperor Hirohitoof Japan ignored the ultimatum, which led to the decision to drop the atomic bombs. These weapons had been developed as part of a secret government project called the Manhattan Project—a program established by President Franklin Roosevelt in June of 1942 specifically to develop an atomic bomb. What Were the First Effects of Dropping the Atomic Bomb?On August 6, 1945, a B-29 bomber named the Enola Gaytook off from an airbase on the Pacific island of Tinian. Tucked into its bomb bay was an 8,900-pound atomic bomb nicknamed Little Boy. At 8:15 am Japanese time, the bomber dropped Little Boy over the city of Hiroshima, a city in western Japan. Three days later, a second atomic bomb, called Fat Man, was dropped over the city of Nagasaki.Hiroshima had been chosen because it was a military command center as well as a communications, troop assembly, and supply point for the Japanese army. It had not suffered previous bomb damage, and it was also located in a level area where resulting damage could be easily assessed. The city had a few buildings made of reinforced concrete, but most of the structures were made of wood. They were weaker, and much of the city was highly vulnerable to fire.Nagasaki was a military port city and shipbuilding center. It was not as effective a target as Hiroshima to the U.S. military because it had suffered previous bomb damage, and it would bedifficult to tell (from a scientific standpoint) how much damage the atomic bomb would cause. The original target had been the city of Kokura, but bad weather forced the bomber plane to choose the second potential target, Nagasaki, instead.The immediate effects of the nuclear bombs were devastating. Approximately 70,000 people died in Hiroshima, most of them from burns or falling debris, and 40,000 died in Nagasaki. Theshock wave and the winds created by the nuclear explosion leveled the cities, leaving only a
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  • japan, Atomic bombings of Hiroshima and Nagasaki

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