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Ernest Rutherford formed a model of the atom in 1911
Ernest Rutherford formed a model of the atom in 1911. -
Leo Szilard-Self sustaining nuclear fission reactions
Leo Szilard conceived the possibility of self-sustaining nuclear fission reactions in 1933. The following year in 1934 Enrico Fermi unknowingly split neutrons within uranium while conducting his own experiment. -
Advisory Committee on Uranium
Advisory Committee on Uranium was formed on October 21, 1939 and had their first meeting on that day as well. -
The Manhattan Project was approved by President Roosevelt
After receiving formal approval from President Roosevelt on December 28, 1942, the Manhattan Project developed into a massive undertaking that spread across the US. -
Trinity Test Started
Using a steel tower hoisted and suspended a gadget 100 feet into the air, the test began at 5:29 am on July 16, 1945. The resulting blast equated to roughly 21 kilotons of TNT. -
Bombing of Nagasaki
On August 9, 1945, the US bombed Nagasaki.