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The Dropping of The Atomic Bomb at Hiroshima and Nagasaki. Vocabulary. 1. Declaration: statement or announcement. 2. Nuclear: comes from word “nucleus”. The core of a cell, which is very small. Referring to energy released from the splitting of atoms – also very small.
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Vocabulary • 1. Declaration: statement or announcement. • 2. Nuclear: comes from word “nucleus”. The core of a cell, which is very small. Referring to energy released from the splitting of atoms – also very small. • 3. Radiation: energy coming from waves or rays, sending out particles. • 4. Offensive: to attack, be aggressive. “Go on the offensive”. • 5. Unconditional: total, with no conditions. The Japanese had to agree to “unconditional surrender”.
Why is it called an Atomic Bomb? • Go back and think – What is an Atom? • The tiniest piece of anything. • How would you split the tiniest piece of anything apart? • You need an incredible amount of energy. • Imagine how destructive this energy could be. • Whoever figures this out can rule the world.
The Manhattan Project • If Germany and Japan had created an atomic bomb, it would be used against the Allies. • Secret Project by U.S. government to split an atom.
Two atomic bombs were made, “Little Boy” and “Fat Man.” “Little Boy was the first a-bomb to be used offensively. The Manhattan Project Success “Fat Man” “Little Boy”
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Question • What were President Harry Truman’s motivations for using the Atomic Bomb against Japan in World War II?
Debate over the Bomb:American Considerations • Americans were suffering many casualties and the Japanese were showing no signs of possible negotiation. • For months the U.S. had been firebombing Japanese cities. Tokyo, March, 1945
Cost of the Manhattan Project • 20 Billion in todays dollars. • Some argued that since we paid so much for it, we had to use it.
U.S. Invasion of Japan? • Japan would not agree to “unconditional surrender”. • An invasion of Japan would be too costly – in lives and money. • It could take years. • U.S running out of money. Tokyo, March, 1945
Potsdam Conference • Terms of surrender for Japan were outlined. • Unconditional Surrender vs. Conditional Surrender. • Map of Europe finalized. • Stalin demanded a lot, due to the fact it had highest number of casualties in Europe.
Debate over Bomb – Other American Considerations • Beginning of Cold War • Secretary of State Byrnes said it might make Russia more “manageable”. • At Potsdam, Stalin was difficult. • Stimson wrote in his diary, “"the atomic bomb was the United States' master card in dealing, not just with Japan, but with the Soviet Union as well”. • The Soviet Union promised the U.S. it would join the war against Japan. • Truman didn’t wait. • Why could that be?
Conditional Surrender – he stays on as Emperor. U.S would not agree to this in June, 1945. War could have ended then. After bombing, Hirohito surrenders. The atomic bomb was given as the main reason for the surrender of Japan. Emperor Hirohito
8:15 AM, “The Little Boy” was dropped over the center of Hiroshima It exploded about 2,000 ft. above the city and had a blast the equivalent to 13 kilotons of TNT. Due to radiation, approximately 150,000 additional people have died. Enola Gay and Hiroshima
On August 10, 1945 thousands of leaflets were dropped over the city of Nagasaki. Formal Warning to Japan Sample Leaflet
The “Fat Man” on August 9, 1945. The Japanese finally surrendered on September 2, 1945. Nagasaki and Surrender
The younger they were at the time, and the more radiation they were exposed to, the higher their risk of illness. Rain that follows any atomic detonation is laden with radioactive particles, and many survivors of the Hiroshima and Nagasaki blasts succumbed to radiation poisoning. Health Complications
Symptoms • Headache • Shortness of breath • Rapid heartbeat • Inflammation of the mouth and throat • Worsening of tooth or gum disease • Hair loss • Dry cough • Heart inflammation with chest pain • Burning • Permanent skin darkening • Bleeding spots anywhere under the skin • Hemorrhage • Anemia
45% of survivors experienced thyroid problem. As of 1990, there were 176 reported deaths caused by leukemia among the survivors. Damage to immune system Disease
Rare photo taken at ground level of Nagasaki bombing Hiroshima was burnt to ashes