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The Invention and Use of the A-Bomb in WW2

By 1230254
  • The Invention of the Atomic Bomb

    The discovery of nuclear fission made by Otto Hahn, Lise Meitner and Fritz Strassman, allowed the first atomic bomb to be built.
    It was first built in a laboratory in Berlin, Germany. Nazi Germany never got around to using it, however.
  • The Szilárd Letter

    The Szilárd Letter
    Einstein, working as a professor of Physics at the University of Berlin, found out about the discover of nuclear fission, and sent a letter to the President of the United States, warning him of the dangers.
  • Pearl Harbor

    Pearl Harbor
    On December 7, 1941, Japan launched a surprise attack at the Pearl Harbor Naval base in Hawaii.
  • US Declares War

    US Declares War
    With the famous "Day of Infamy" speech to Congress, President Roosevelt declares war against Japan.
  • Germany Surrenders (Unconditionally)

    Germany Surrenders (Unconditionally)
  • Japan Continues to Fight

    Even though Germany officially surrendered, and Italy switched sides, Japan continued to fight the US.
  • First Successful Atomic Bomb Test

    First Successful Atomic Bomb Test
  • Hiroshima is Bombed

    Hiroshima is Bombed
    On August 6th, 1945, the bomber Enola Gay dropped the first A-bomb on Hiroshima. 80,000 people were instantly killed. More would die in the fallout.
  • Japan Refuses to Surrender

    President Truman gave Japan an opportunity to surrender after the bombing, but the Japanese Government refused.
  • Nagasaki is Bombed

    Nagasaki is Bombed
    The bomber Boxcar drops Fat Man on Nagasaki, killing 40,000. The giant mushroom cloud blocked the sun from the city, turning day to night.
  • The Soviet Union Declares War on Japan

    The Soviet Union Declares War on Japan
    At this point is it Japan against the world.
  • Black Rain

    About 30-40 minutes after each bomb was dropped, a black rain, or fallout, rained down on the cities.
  • Radiation Poisining

    Radiation Poisining
    After the bombs fell, people began to feel the effects of radiation. People had symptoms such as internal bleeding, loss of hair, among other symptoms. Some even died in the weeks, months, and years after the bomb.
  • Japan's Official Surrender

    Japan's Official Surrender
    Japan surrenders unconditionally, signing the documents onboard the USS Missouri. The emperor of Japan, however, was absent from the meeting.
  • Period: to

    Allied Occupation of Japan

    Led by General MacArthur, the US occupies Japan. They did things like censor anything about WW2 or the bomb in media and told the Japanese that the emperor is not a god, but just a man.
  • Rebuilding

    Three years after the bombs, Japanese dislocated by it come back and rebuild. The radiation is gone; plants even start to grow. But it will be a long road to prosperity.
  • Final Death Toll

    Final Death Toll
    In addition to the 80,000 people killed instantly by Little Boy, another 60,000 die from radiation poisoning by 1950.
  • Nagasaki Death Toll

    The death toll in Nagasaki was about half of Hiroshima. This is due to the fact that a mountain range splits the city, which helped blocked some of the blast from the bomb.
  • Period: to

    50th Anniversary of the Bombings

    This date marks the 50th anniversary of the bombings. Japan is thrust on the world stage as it remembers what happened there half a century ago.
  • The Last Known Detonation of an Atomic Bomb

    The Last Known Detonation of an Atomic Bomb
    Scientists and physicists are still developing technology for weapons and bombs, but hopefully it will not be needed.
  • Sources/Works Cited