ATOMIC BOMB

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ATOMIC BOMB
By Jimmy Leary
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Manhattan Project

• Manhattan Project was the codename given to the
  development of the bombs
• It was the only time atomic bombs were studied
  for weapons rather than just research
• United Kingdom and Canada both helped the United
  States in the research

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Who designed the atomic bomb?

• Albert Einstein wrote Roosevelt about the Germans
  researching Atomic weapons and recommended they
  should research as well but did not directly work
  on the project
• Enrico Fermi lead research on the atom bomb and
  was assisted by Leo Szilard
• Although they developed the bomb, Szilard did not
  know it would be used and once he found out he
  tried to prevent it but could not.

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What was the bomb constructed of?

• The atomic bomb Little Boy was composed of
  Uranium and Fat Man composed of Plutonium
• For the bomb to create a considerable amount of
  damage there had to be enough to reach super
  critical mass
• Supercritical mass would allow the reaction in
  the bomb to take place faster and exponentially

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Why was the atomic bomb used?

• Truman factored many things into deciding to use
  the bomb
• A bomb had been tested at Trinity first so he was
  aware of the damage it could do
• USA had suffered over 1 million losses before the
  use of the bomb
• The bomb was initially dropped to strike fear
  into the Japanese and eventually force them to
  surrender which it did.
• The second bomb was dropped to make it seem like
  the USA had a huge arsenal of bombs to use
• Although only rumors there is proof that Truman
  used the bombs to scare the Soviet Union

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"We saw another sun in the sky when it
exploded."- Japanese Witnesses
Little Boy

• Little Boy was the bomb dropped on Hiroshima
• It was dropped August 6, 1945 from the B-52
  bomber, the Enola Gay, which was piloted by
  Colonel Paul Tibbets
• Made up of 220 lb of Uranium
• Destroyed basically everything within 1.5 mile
  3mile radius
• It resulted in the death of 155,000 people by
  impact explosion and radioactive disease

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Fat Man

• Bomb was named Fat Man because of its appearance
  and as a tribute to Winston Churchill
• Dropped August 9, 1945 on Nagasaki from a B-52
  piloted by Charles Sweeny
• Killed a total of around 100,000 people from
  burns, radiation, and impact blast
• Unlike Little Boy, Fat Man had a 22 lb plutonium
  core that was surrounded by a Uranium isotope
• When the bomb detonated everything would implode
  causing the plutonium to fuse quickly

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Important Quotes

• "I fear all we have done is awaken a sleeping
  giant and fill him with a terrible resolve.
  -Admiral Isoroku Yamamoto after the Japanese bomb
  Pearl Harbor
• "I hate war as only a soldier who has lived it
  can, only as one who has seen its brutality, its
  futility, its stupidity. -Gen. Dwight D.
  Eisenhower "We are not retreating we are
  advancing in another direction." -Gen.
  Douglas MacArthur

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• Japan surrendered to the US on September 2, 1945
• It was the bombing on Nagasaki that ultimately
  led to japans surrender
• United States paid for and helped rebuild Japan
  after Japan surrendered

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Sources

• Little Boy and Fat Man. National Atomic Museum.
  03 Dec. 2004 lthttp//www.atomicmuseum.com/tour/dd2
  .cfmgt.
• "SAC's Bombers." Strategic Air Command. 04 Dec.
  2004 lthttp//www.strategic-air-command.com/aircraf
  t/gt.
• Ohba , Mitsuru. A-Bomb WWW Museum. World War II.
  01 Dec. 2004 lthttp//www.csi.ad.jp/ABOMB/gt.
• "Atomic Bomb." Bomb Design. The Manhattan
  Project. 09 Dec. 2004 lthttp//www.me.utexas.edu/u
  er/manhattan/bomb-design.htmlgt.
• "The Atomic Bomb." Truman's Decision-Should the
  bomb have been dropped?. Studen Web Museum. 06
  Dec. 2004 lthttp//www.pomperaug.com/socstud/stumus
  eum/web/msrhome.htmgt.