Peenemunde research center opens on the Baltic Sea for experiments in military rocketry.
Discovery of Nuclear Fission by Germans
The discovery of nuclear fission by German scientists is reported in the British science journal.
World’s Fair in New York City
World’s Fair in New York City promises a new world of futuristic technology and prosperity.
Einstein warns Roosevelt
2 August 1939
Einstein warns Roosevelt - Three European scientists who fled the Nazi threat persuaded Albert Einstein to warn US President Franklin D Roosevelt that Germany may be developing a nuclear weapon. Einstein wrote a letter to the President, outlining these concerns.
First German Enigma coding machine captured by British
Britain Studies Nuclear Weapons
Great Britain forms a committee to study the feasibility of a nuclear weapon.
U.S. Studies Nuclear Weapons
12 June 1940
President Roosevelt creates the National Defense Research Committee to study the feasibility of a nuclear weapon
German Blitz on London begins
“Battle of the Beams”, jamming radio navigation and etc begins.
President Roosevelt creates “National Defense Research Committee”
President Roosevelt creates “National Defense Research Committee”, later Office of Scientific Research and Development, to mobilize the nation's scientists and engineers to work for the war effort.
Tizard Mission brings “cavity magnetron” to US
Tizard Mission brings “cavity magnetron” to US hidden in a suitcase on a civilian ocean liner, thus transferring British microwave radar invention to US.
19 September 1940
Tizard Mission brings a British microwave radar invention to the U.S. through hidden ways
MIT Radiation Laboratory Opens New Research Topic
MIT Radiation Laboratory opens to research microwave radar based on British magnetron technology.
Britain Reports Atomic Bomb possible
May 1941 - August 1941
The British forward a report to America’s nuclear weapon committee that indicates an atomic bomb is feasible
British attacking German Enigma codes
British begin regularly breaking German military’s Enigma codes
Britain Expands Nuclear Research
Great Britain creates a division of the Department of Scientific and Industrial Research, code-named Tube Alloys, to supervise its nuclear energy research.
U.S. Begins a Nuclear Bomb Program
U.S. begins a crash program to develop an atomic bomb, code-named the Manhattan Project. It is the largest research and development project in American history
Anti-Aircraft Technologies Development
10 December 1941
Japanese aircraft sink British Warships and this spurs the development of anti-aircraft technologies
Germany abandons its nuclear weapons program
Germany abandons its project to develop nuclear weapons, nonetheless, the Allies are unaware of this
U.S. War Department Takes over Manhattan Project
Atomic pile goes critical.
2 December 1942
In an important breakthrough, an atomic pile assembled in Chicago by Manhattan Project scientists, demonstrates that it can produce both energy and the new element plutonium