The atomic bomb: a revolution in war By blaze713 Period: Apr 11, 1931 to Aug 9, 1945 devolopment and use Aug 7, 1931 Harold c. Urey discovers deuterium which later contributes to the atomic bombs creation http://www.nobelprize.org/nobel_prizes/chemistry/laureates/1934/urey.jpg Sep 12, 1933 Leo Szilard realizes that they need a element that can emit a nuclear chain reaction http://www.nndb.com/people/472/000104160/leo-szilard-1-sized.jpg Dec 19, 1938 otto hahn fritz produce nuclear fission http://search.snap.do/?q=otto+hahn+fritz&category=images Aug 2, 1939 einstein writes a letter to president roosevelt warning of the nazi germany creating an atom bomb http://media.npr.org/assets/img/2011/09/28/93434191-einstein-tongue_custom-36fb0ce35776dc2d92eda90880022bf48a67e192-s6-c10.jpg Sep 1, 1939 germany invades poland starting the world war 2 news of the war strikes america and it was so fast it is nicknamed the lightning war Dec 6, 1941 right before pearl harbor is attacked roosevelt gives 2 million dollars to begin creating the atom bomb http://upload.wikimedia.org/wikipedia/commons/thumb/b/b8/FDR_in_1933.jpg/220px-FDR_in_1933.jpg Jul 17, 1944 a terrible explosion in a military bay kills 323 men http://www.angelfire.com/tx/yuccaflat/images/170.jpg Jul 16, 1945 new mexico conducts a test at trinity exploding with an equivelance of 18,00 tons of tnt http://www.angelfire.com/tx/yuccaflat/images/170.jpg Aug 6, 1945 the little boy atom bomb exploded over hiroshima and killed over 100,000 people http://www.infiniteunknown.net/wp-content/uploads/2011/02/little-boy-nuke-dropped-by-enola-gay.jpg Aug 9, 1945 the fat man nuke exploded over nagasaki killing over 75,000 people then japan surrenderd http://upload.wikimedia.org/wikipedia/commons/thumb/c/c2/Fat_man.jpg/250px-Fat_man.jpg