Template:Selected anniversaries/February 12: Difference between revisions
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||1685: George Hadley born ... lawyer and amateur meteorologist who proposed the atmospheric mechanism by which the trade winds are sustained, which is now named in his honour as Hadley circulation. No pic online. | ||1685: George Hadley born ... lawyer and amateur meteorologist who proposed the atmospheric mechanism by which the trade winds are sustained, which is now named in his honour as Hadley circulation. No pic online. | ||
||1785: Pierre Louis Dulong born ... physicist and chemist. Pic. | ||1785: Pierre Louis Dulong born ... physicist and chemist. Pic. | ||
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||1929: Mathematician and academic Alexei Kostrikin born. He will specialize in algebra and algebraic geometry, making important contributions to the Burnside problem; he also wrote widely used textbooks. Pic search. | ||1929: Mathematician and academic Alexei Kostrikin born. He will specialize in algebra and algebraic geometry, making important contributions to the Burnside problem; he also wrote widely used textbooks. Pic search. | ||
||1935: USS ''Macon'', one of the two largest helium-filled airships ever created, crashes into the Pacific Ocean off the coast of California and sinks. | ||1935: USS ''Macon'', one of the two largest helium-filled airships ever created, crashes into the Pacific Ocean off the coast of California and sinks. | ||
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||1939: S. P. L. Sørensen dies ... chemist and academic ... famous for the introduction of the concept of pH, a scale for measuring acidity and alkalinity. Pic. | ||1939: S. P. L. Sørensen dies ... chemist and academic ... famous for the introduction of the concept of pH, a scale for measuring acidity and alkalinity. Pic. | ||
||1946: World War II: Operation Deadlight ends after scuttling 121 of 154 captured U-boats. | ||1946: World War II: Operation Deadlight ends after scuttling 121 of 154 captured U-boats. | ||
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File:Oskar_Anderson.jpg|link=Oskar Anderson (nonfiction)|1960: Mathematician and statistician [[Oskar Anderson (nonfiction)|Oskar Anderson]] dies. Anderson made important contributions to mathematical statistics and econometrics. | File:Oskar_Anderson.jpg|link=Oskar Anderson (nonfiction)|1960: Mathematician and statistician [[Oskar Anderson (nonfiction)|Oskar Anderson]] dies. Anderson made important contributions to mathematical statistics and econometrics. | ||
File:Venera 1.jpg|link=Venera 1 (nonfiction)|1961: Spacecraft [[Venera 1 (nonfiction)|Venera 1]] launched. Venera will become the first man-made object to fly-by another planet by passing Venus (although it will lose contact with Earth and not send back any data). | File:Venera 1.jpg|link=Venera 1 (nonfiction)|1961: Spacecraft [[Venera 1 (nonfiction)|Venera 1]] launched. Venera will become the first man-made object to fly-by another planet by passing Venus (although it will lose contact with Earth and not send back any data). | ||
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||1980: Carl Einar Hille dies ... mathematics professor and scholar. Hille authored or coauthored twelve books mathematical books and a number of mathematical papers. Pic. | ||1980: Carl Einar Hille dies ... mathematics professor and scholar. Hille authored or coauthored twelve books mathematical books and a number of mathematical papers. Pic. | ||
File:Charles Critchfield ID badge.png|link=Charles Critchfield (nonfiction)|1994: Mathematical physicist [[Charles Critchfield (nonfiction)|Charles Critchfield]] dies. Critchfield worked on the Manhattan Project, designing and testing the "Urchin" neutron initiator which provided the burst of neutrons that kick-started the nuclear detonation of the Fat Man weapon. | File:Charles Critchfield ID badge.png|link=Charles Critchfield (nonfiction)|1994: Mathematical physicist [[Charles Critchfield (nonfiction)|Charles Critchfield]] dies. Critchfield worked on the Manhattan Project, designing and testing the "Urchin" neutron initiator which provided the burst of neutrons that kick-started the nuclear detonation of the Fat Man weapon. | ||
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||2015: John Piña Craven dies ... scientist who was known for his involvement with Bayesian search theory and the recovery of lost objects at sea. Pic: https://www.washingtonpost.com/national/john-p-craven-scientist-who-directed-top-secret-navy-projects-dies-at-90/2015/02/21/50083a20-b935-11e4-a200-c008a01a6692_story.html?utm_term=.78975b0baaa4 | ||2015: John Piña Craven dies ... scientist who was known for his involvement with Bayesian search theory and the recovery of lost objects at sea. Pic: https://www.washingtonpost.com/national/john-p-craven-scientist-who-directed-top-secret-navy-projects-dies-at-90/2015/02/21/50083a20-b935-11e4-a200-c008a01a6692_story.html?utm_term=.78975b0baaa4 | ||
||2017: Ren Xinmin dies ... rocket scientist. Pic search. | ||2017: Ren Xinmin dies ... rocket scientist. Pic search. | ||
</gallery> | </gallery> |
Latest revision as of 19:54, 26 January 2022
1912: Mathematician and logician Hans Hermes born. Hermes will contribute to the foundations of mathematical logic, and pioneer the concept of the Turing machine as a measure of predictability.
1914: Mathematician and academic Hanna Neumann born. Neumann will contribute to group theory, co-authoring the important paper Wreath products and varieties of groups (with her husband Bernhard and eldest son Peter), and authoring the influential book Varieties of Groups (1967).
1916: Mathematician, philosopher, and academic Richard Dedekind dies. Dedekind made important contributions to abstract algebra (particularly ring theory), algebraic number theory and the definition of the real numbers.
1935: Physicist and engineer Robert Van de Graaff receives a patent for his Electrostatic Generator design (U.S. No. 1,991,236), able to generate direct-current voltages much higher than the 700,000-V which was the state of the art at the time using other methods.
1947: Chemist and academic Moses Gomberg dies. Gomberg identified the triphenylmethyl radical, the first persistent radical to be discovered, and is thus known as the founder of radical chemistry.
1959: Singer, songwriter, multi-instrumentalist, and alleged criminal mastermind Skip Digits uses high-energy literature techniques to record his hit song "Klepsydra".
1960: Mathematician and statistician Oskar Anderson dies. Anderson made important contributions to mathematical statistics and econometrics.
1961: Spacecraft Venera 1 launched. Venera will become the first man-made object to fly-by another planet by passing Venus (although it will lose contact with Earth and not send back any data).
1994: Mathematical physicist Charles Critchfield dies. Critchfield worked on the Manhattan Project, designing and testing the "Urchin" neutron initiator which provided the burst of neutrons that kick-started the nuclear detonation of the Fat Man weapon.