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Atomic Age Timeline

  • Splitting the Atom

    Splitting the Atom
    Enrico Fermi became the first physicist to split the atom.
  • Albert Einstein's Letter

    Albert Einstein's Letter
    Albert Einstein sends a letter to Franklin Roosevelt, warning him that German researchers are working on an atomic bomb.
  • The Manhattan Project

    The Manhattan Project
    President Roosevelt signed an order creating a secret project to develop the nuclear weapon.
  • Nuclear Chain Reaction

    Nuclear Chain Reaction
    Enrico Fermi demonstrated the first nuclear chain reaction in a lab under the squash court at the University of Chicago.
  • Atomic Bomb Tested

    Atomic Bomb Tested
    The United States exploded the first atomic device at a site near Alamogordo, New Mexico. At 5:30 am, July 16, 1945.
  • Bomb Dropped on Heroshima

    Bomb Dropped on Heroshima
    The United States drops an atomic bomb on Heroshima Japan.
  • Bomb dropped on Nagasaki

    Bomb dropped on Nagasaki
    On this date another B-29 bomber, Bock's car, dropped fat man on Nagasaki Japan