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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 Discovery of Nuclear Fission Archived 2010-02-16 at the Wayback Machine Historical account complete with audio and teacher's guides from the American Institute of Physics History Center; atomicarchive.com Nuclear Fission Explained; Nuclear Files.org Archived 2018-03-08 at the Wayback Machine What is Nuclear Fission? Nuclear Fission Animation
In 1944, Hahn received the Nobel Prize for Chemistry for the discovery of nuclear fission, although Fritz Strassmann had been acknowledged as an equal collaborator in the discovery. [13] [14] From 1939 to 1946 working at the Kaiser-Wilhelm Institute, Strassman contributed to research on the fission products of thorium, uranium, and neptunium.
In 1932, Walton produced the first man-made fission by using protons from the accelerator to split lithium into alpha particles. [5] The accelerator was then used to fire deuterons at various targets. Working with Rutherford and others, Mark Oliphant discovered the nuclei of helium-3 (helions) and tritium (tritons), the first case of human ...
[9] [10] Once this was experimentally confirmed and announced by Frédéric Joliot-Curie in 1939, scientists in many countries (including the United States, the United Kingdom, France, Germany, and the Soviet Union) petitioned their governments for support of nuclear fission research, just on the cusp of World War II, for the development of a ...
Nuclear fission is a substantial part of the world’s energy mix, but out in the broader universe, fission is much harder to come by. ... to nuclear energy, human engineering and the rest of the ...
Only a few years later, in December 1938 nuclear fission was discovered by Otto Hahn and his assistant Fritz Strassmann. Hahn understood that a "burst" of the atomic nuclei had occurred. [8] [9] Lise Meitner and Otto Frisch gave a full theoretical interpretation and named the process "nuclear fission".
The discovery of human bone fragments sent the researchers digging through the material excavated about nine decades ago — in which they found additional skeleton fragments.