1921 in science
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The year 1921 in science and technology involved some significant events, listed below.
Contents |
[edit] Chemistry
- Thomas Midgley discovers the effective anti-knocking properties of Tetra-ethyl lead, which is used in "leaded" gasoline (petrol).
[edit] Mathematics
- John Maynard Keynes publishes A Treatise on Probability.
- Emmy Noether publishes Idealtheorie in Ringbereichen, developing ideal ring theory, an important text in the field of abstract algebra.[1][2]
- First publication of Ludwig Wittgenstein's Tractatus Logico-Philosophicus, as "Logisch-Philosophische Abhandlung" in Annalen der Naturphilosophie.
[edit] Medicine
- July 18 - The first BCG vaccination against tuberculosis.
- July 27 - Researchers at the University of Toronto led by biochemist Frederick Banting announce the discovery of the hormone insulin.
- American biochemist Elmer McCollum identifies the presence of a component in cod liver oil which cures rickets, which he calls vitamin D.[3][4][5]
[edit] Physics
- T. Kaluza demonstrates that a five-dimensional version of Albert Einstein's equations unifies gravitation and electromagnetism.
[edit] Psychology
- Hermann Rorschach publishes Psychodiagnostik, proposing the inkblot test.
- Gaëtan Gatian de Clérambault publishes Les Psychoses passionelles, a comprehensive review of erotomania.
[edit] Technology
- October 25 - Hugo A. F. Abt is granted a patent for his design of bascule bridge.[6]
[edit] Awards
- Nobel Prize
- Physics - Albert Einstein
- Chemistry - Frederick Soddy
- Physiology or Medicine - not awarded
[edit] Births
- October 21 - Victor A. McKusick (died 2008), "The Father of Genetic Medicine".
[edit] Deaths
- March 29 - John Burroughs (born 1837), naturalist.
- October 23 - John Boyd Dunlop (born 1840), inventor.
[edit] References
- ^ Crilly, Tony (2007). 50 Mathematical Ideas you really need to know. London: Quercus. p. 57. ISBN 978-1-84724-008-8.
- ^ Weyl, Hermann (1935). "Emmy Noether". Scripta Mathematica 3: 201–220.
- ^ Carere, Suzanne (2007-07-25). "Age-old children's disease back in force". thestar.com. Toronto. http://www.thestar.com/printarticle/239341. Retrieved 2012-01-26.
- ^ Conis, Elena (2006-07-24). "Fortified foods took out rickets". Los Angeles Times. http://articles.latimes.com/2006/jul/24/health/he-esoterica24. Retrieved 2012-01-26.
- ^ McClean, Franklin C.; Budy, Ann M. (1963). "Vitamin A, Vitamin D, Cartilage, Bones, and Teeth". In Harris, Robert S.. Vitamins and Hormones. 21. New York; London: Academic Press. pp. 51–52. http://books.google.com/books?id=gGb7vm2SapcC&lpg=PA52&pg=PA51#v=onepage.
- ^ United States Patent #1,394,519
