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Post by Eton Bones on Dec 26, 2010 22:06:47 GMT -5
- timeline@proboards.com
- [glow=red,2,300]1932[/glow]James Chadwick discovered that the nucleus contained another particle, the neutron, and in the same year John Asscroft and Ernest Walton "split the atom" for the first time, the first occasion on which an atomic nucleus of one element had been successfully changed to a different nucleus by artificial means.
- [glow=red,2,300]1934 [/glow]the idea of chain reaction via neutron was proposed by Leó Szilárd, who patented the idea of the atomic bomb. The patent was transferred in secret to Britain's Navy in 1936. In a very real sense, Szilárd was the father of the atomic bomb academically
- [glow=red,2,300]December 1938[/glow]German chemists Otto Hahn and Fritz Strassmann sent a manuscript to Naturwissenschaften reporting they had detected the element barium after bombarding uranium with neutrons; simultaneously, they communicated these results to Lise Meitner. Meitner, and her nephew Otto Robert Frisch, correctly interpreted these results as being nuclear fission. Frisch confirmed this experimentally on January 13, 1939.
- [glow=red,2,300]25 January 1939[/glow]
a Columbia University team conducted the first nuclear fission experiment in the United States, which was done in the basement of Pupin Hall
- [glow=red,2,300]August 2nd 1939[/glow]Einstein and several other scientists tell Roosevelt of efforts in Nazi Germany to purify U-235 with which might in turn be used to build an atomic bomb. It was shortly thereafter that the United States Government began the serious undertaking known only then as the Manhattan Project
- [glow=red,2,300]August 6th, 1945[/glow]A Uranium bomb (which weighed in at over 4 & 1/2 tons) nicknamed "Little Boy" was dropped on Hiroshima and in the flash of an instant, 66,000 people were killed and 69,000 people were injured by a 10 kiloton atomic explosion
(just 0.01% of the full explosive yield for that bomb).
- [glow=red,2,300]August 9th 1945[/glow]
Nagasaki fell to the same treatment as Hiroshima
- [glow=red,2,300]August 16th, 1945[/glow]empty description empty description empty description empty description empty description empty description
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