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The Atomic Bomb

The Atomic Bomb. Manhattan Project. Top-secret project to develop a weapon using atomic energy Chief scientist Robert Oppenheimer was in charge of the project First bomb detonated in the desert of New Mexico in July of 1945. Attack on Japan.

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The Atomic Bomb

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  1. The Atomic Bomb

  2. Manhattan Project • Top-secret project to develop a weapon using atomic energy • Chief scientist Robert Oppenheimer was in charge of the project • First bomb detonated in the desert of New Mexico in July of 1945

  3. Attack on Japan • After fighting the Japanese in the Pacific and at Okinawa an invasion of Japan was a daunting task that may cost 500,000 American lives • Most advisers to President Truman wanted to end the war as quickly as possible

  4. Potsdam Ultimatum • President Truman did not want to send in more troops to fight • Issued a statement to Emperor Hirohito to surrender or they could expect complete destruction • No mention of the weapon to be used

  5. Hiroshima • August 6, 1945 “Little Boy” is dropped on Hiroshima (350,000 people) • City was picked as a military target and for psychological effects on Japanese • 140,000 Japanese died by the end of the year from the bomb

  6. Nagasaki • August 9, 1945 The Japanese had still not surrendered • US dropped “Fat Man” on the large seaport responsible for production of Japanese weapons • By the end of the year 80,000 Japanese had died from the bomb/ effects

  7. Unconditional Surrender • On August 14th the Emperor Hirohito announced Japan’s surrender to the people of Japan • On September 2nd the Japanese formally surrendered in a ceremony held on the USS Missouri

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