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The year 1939 in science and technology involved some significant events, listed below.
The year 1950 in science and technology included some significant events.
The year 1941 in science and technology involved some significant events, listed below.
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Egon Bretscher was a Swiss-born British chemist and nuclear physicist and Head of the Nuclear Physics Division from 1948 to 1966 at the Atomic Energy Research Establishment, also known as Harwell Laboratory, in Harwell, United Kingdom. He was one of the pioneers in nuclear fission research and one of the first to foresee that plutonium could be used as an energy source. His work on nuclear physics led to his involvement in the British atomic bomb research project Tube Alloys and his membership of the British Mission to the Manhattan Project at Los Alamos, where he worked in Enrico Fermi's Advanced Development Division in the F-3 Super Experimentation group. His contributions up to 1945 are discussed by Margaret Gowing in her "Britain and Atomic Energy, 1935-1945."
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Eugene Theodore Booth, Jr. was an American nuclear physicist. He was a member of the historic Columbia University team which made the first demonstration of nuclear fission in the United States. During the Manhattan Project, he worked on gaseous diffusion for isotope separation. He was the director of the design, construction, and operation project for the 385-Mev synchrocyclotron at the Nevis Laboratories, the scientific director of the SCALANT Research Center, and dean of graduate studies at Stevens Institute of Technology. Booth was the scientific director of the SCALANT Research Center, in Italy.
Nuclear fission was discovered in December 1938 by chemists Otto Hahn and Fritz Strassmann and physicists Lise Meitner and Otto Robert Frisch. Fission is a nuclear reaction or radioactive decay process in which the nucleus of an atom splits into two or more smaller, lighter nuclei and often other particles. The fission process often produces gamma rays and releases a very large amount of energy, even by the energetic standards of radioactive decay. Scientists already knew about alpha decay and beta decay, but fission assumed great importance because the discovery that a nuclear chain reaction was possible led to the development of nuclear power and nuclear weapons. Hahn was awarded the 1944 Nobel Prize in Chemistry for the discovery of nuclear fission.
Christopher Hollis Johnson CBE was a British chemist and physicist. He worked in weapons research and was part of the technical committee of Tube Alloys, the UK's secret atomic weapon development programme.
References
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- ↑ Gowing, Margaret (1964). Britain and Atomic Energy, 1935–1945. London: Macmillan Publishing. pp. 40–43. OCLC 3195209.
- ↑ Auto Editors of Consumer Guide. "1906-1939 Jeep: Jeep Makes History". HowStuffWorks. Archived from the original on 2012-05-01. Retrieved 2012-05-31.