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Deuterium discovered
Heavy Hydrogen or deuterium is discovered by Harold C. Urey. -
Split Atom
Sometime during 1932, the atom is split by John Crockcroft and E.T.S. Walton of Great Britain thereby proving Einstein's Theory of Relativity which states, "an object in motion creates its own timeframe." -
Nuclear Chain Reaction
During 1933, Hungarian physicist Leo Szilard realizes the possibility of the nuclear chain reaction. -
Nuclear Fission
The first nuclear fission is achieved by Enrico Fermi of Italy. -
Nuclear Fission Theory
The Theory of Nuclear Fission is announced by Lise Meitner and Otto Frisch -
Discovery of fission
The Theory of Nuclear Fission is announced by Lise Meitner and Otto Frisch -
Military
Robert Oppenheimer realizes the military possibilities of nuclear fission -
Letter
Albert Einstein writes to President Franklin Roosevelt concerning the use of uranium as a new source of energy leading to the formation of the Committee on Uranium. -
WWII Begins
World War II Begins -
Plutonium discovered
Plutonium is discovered by Glenn Seaborg. -
The "Go-Ahead"
FDR gives the go-ahead for the development of an atomic weapon. -
The Manhattan Project
FDR authorizes the Manhattan Engineering District for the purpose of creating an atomic bomb. This would later be called the 'Manhattan Project'. -
Manhattan Project Control
Coloneal Leslie Groves is placed in charge of the Manhattan Project. J. Robert Oppenheimer becomes the Project's Scientific Director. -
First Reaction
First controlled nuclear fission reaction is produced by Enrico Fermi at the University of Chicago -
Target is chosen
Japan becomes the primary target for any future atomic bomb according to the Military Policy Committee of the Manhattan Project. -
Harry Truman
President Franklin Roosevelt dies and Harry Truman is named 33rd President of the United States of America -
Potential Target Cities
The Target Committee of the Manhattan Project select four cities as possible targets for the atomic bomb. They are: Kyoto, Hiroshima, Kokura, and Niigata.
