Template:Selected anniversaries/November 21: Difference between revisions
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||1986: National Security Council member Oliver North and his secretary start to shred documents allegedly implicating them in the Iran–Contra affair. | ||1986: National Security Council member Oliver North and his secretary start to shred documents allegedly implicating them in the Iran–Contra affair. | ||
||1991: Hans Julius Zassenhaus dies ... mathematician, known for work in many parts of abstract algebra, and as a pioneer of computer algebra. | ||1991: Hans Julius Zassenhaus dies ... mathematician, known for work in many parts of abstract algebra, and as a pioneer of computer algebra. Pic. | ||
||1993: Bruno Benedetto Rossi dies ... experimental physicist. He made major contributions to particle physics and the study of cosmic rays. | ||1993: Bruno Benedetto Rossi dies ... experimental physicist. He made major contributions to particle physics and the study of cosmic rays. | ||
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||2009: Konstantin Feoktistov dies ... engineer and astronaut. Pic. | ||2009: Konstantin Feoktistov dies ... engineer and astronaut. Pic. | ||
||2014: Paul von Ragué Schleyer dies ... chemist and academic ... made contributions in the area of synthesis of adamantane and other cage molecules by rearrangement mechanisms. He also discovered new types of hydrogen bonding. Schleyer also identified solvolysis mechanisms, including reactive intermediates. As a pioneer in the field of computational chemistry, Schleyer identified a number of new molecular structures, especially related to lithium chemistry and electron deficient systems. Pic search good: https://www.google.com/search?q=paul+von+ragué+schleyer | |||
File:Spiral.jpg|link=Spiral (image) (nonfiction)|2018: ''[[Spiral (image) (nonfiction)|Spiral]]'' voted Picture of the Day by the citizens of [[New Minneapolis, Canada]]. | File:Spiral.jpg|link=Spiral (image) (nonfiction)|2018: ''[[Spiral (image) (nonfiction)|Spiral]]'' voted Picture of the Day by the citizens of [[New Minneapolis, Canada]]. | ||
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Revision as of 11:35, 26 February 2019
1652: Mathematician, physician, and astronomer Jan Brożek dies. He contributed to a greater knowledge of Nicolaus Copernicus' theories and was his ardent supporter and early prospective biographer.
1675: Isaac Newton publishes new class of Gnomon algorithm functions which detect and prevent crimes against mathematical constants.
1676: Astronomer Ole Rømer presents the first quantitative measurements of the speed of light.
1904: Mechanical engineer Clock Head 2 warns theoretical physicist Albert Einstein that the mass–energy equivalence formula, E = mc², will have "earth-shaking consequences."
1905: Albert Einstein's paper that leads to the mass–energy equivalence formula, E = mc², is published in the journal Annalen der Physik.
1984: Physicist and crime-fighter Harry Lehmann uses a combination of the LSZ reduction formula and the Källén–Lehmann spectral representation to detect and prevent crimes against physical constants.
1996: Theoretical physicist Mohammad Abdus Salam dies. He shared the 1979 Nobel Prize in Physics with Sheldon Glashow and Steven Weinberg for his contribution to the electroweak unification theory.
2018: Spiral voted Picture of the Day by the citizens of New Minneapolis, Canada.