Template:Selected anniversaries/February 12: Difference between revisions

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||1538: Albrecht Altdorfer dies ... painter, engraver, and architect.
||1538: Albrecht Altdorfer dies ... painter, engraver, and architect.
||1535: During the night of February 12–13 Tartaglia discovered a method of solving cubic equations that enables him to beat Fiore in a contest. [B. L. van der Waerden in the film, “The Great Art: Solving Equations”] *VFR https://pballew.blogspot.com/2019/02/on-this-day-in-math-february-12.html Pic.


||1612: Jodocus Hondius dies ... cartographer.
||1612: Jodocus Hondius dies ... cartographer.
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||1813: James Dwight Dana born ... geologist, mineralogist, volcanologist, and zoologist. He made pioneering studies of mountain-building, volcanic activity, and the origin and structure of continents and oceans around the world. Pic.
||1813: James Dwight Dana born ... geologist, mineralogist, volcanologist, and zoologist. He made pioneering studies of mountain-building, volcanic activity, and the origin and structure of continents and oceans around the world. Pic.
||1826: Lobachevsky delivered a paper before the mathematics and physics departments of Kazan University on his “imaginary geometry.” He died on this same date in Kazan in 1856. *H. E. Wolfe. Introduction to Non-Euclidean Geometry, p. 53–56;  Lobachevsky first announced his principles of non-Euclidean geometry. This was done in a talk at his home University of Kazan. Unfortunately no record of the talk survives. *VFR https://pballew.blogspot.com/2019/02/on-this-day-in-math-february-12.html
||1831: A solar eclipse was visible across much of the United States.  This eclipse was instrumental in a slave uprising led by Nat Turner. He witnessed this eclipse and took it as a sign from God to begin an insurrection against slave holders. https://pballew.blogspot.com/2019/02/on-this-day-in-math-february-12.html


||1841: Astley Paston Cooper, 1st Baronet dies ... surgeon and anatomist, who made historical contributions to otology, vascular surgery, the anatomy and pathology of the mammary glands and testicles, and the pathology and surgery of hernia.
||1841: Astley Paston Cooper, 1st Baronet dies ... surgeon and anatomist, who made historical contributions to otology, vascular surgery, the anatomy and pathology of the mammary glands and testicles, and the pathology and surgery of hernia.
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||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.
File:Robert J. Van de Graaff.jpg|link=Robert J. Van de Graaff|1935: Physicist and engineer Robert Jemison 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.


||1936: Fang Lizhi born ... Chinese astrophysicist and activist whose liberal ideas inspired the pro-democracy student movement of 1986–87 and, finally, the Tiananmen Square protests of 1989. Pic.
||1936: Fang Lizhi born ... Chinese astrophysicist and activist whose liberal ideas inspired the pro-democracy student movement of 1986–87 and, finally, the Tiananmen Square protests of 1989. Pic.

Revision as of 07:11, 12 February 2019

  • 1767: Polymath Roger Joseph Boscovich publishes new class of Gnomon algorithm functions which detect and prevent a cross-linked set of crimes against physics, astronomy, and mathematics.

    1767: Polymath Roger Joseph Boscovich publishes new class of Gnomon algorithm functions which detect and prevent a cross-linked set of crimes against physics, astronomy, and mathematics.

  • 1914: Mathematician and academic Hanna Neumann born. She 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).

    1914: Mathematician and academic Hanna Neumann born. She 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. He made important contributions to abstract algebra (particularly ring theory), algebraic number theory and the definition of the real numbers.

    1916: Mathematician, philosopher, and academic Richard Dedekind dies. He made important contributions to abstract algebra (particularly ring theory), algebraic number theory and the definition of the real numbers.

  • 1935: Physicist and engineer Robert Jemison 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.

    1935: Physicist and engineer Robert Jemison 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.

  • 1946: Tunguska Event Preservation Society pledge drive meet goal, raises enough computational power to re-create the original event.

    1946: Tunguska Event Preservation Society pledge drive meet goal, raises enough computational power to re-create the original event.

  • 1947: Chemist Moses Gomberg dies. He identified the triphenylmethyl radical, the first persistent radical to be discovered, and is thus known as the founder of radical chemistry.

    1947: Chemist Moses Gomberg dies. He 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 "Clepsydra".

    1959: Singer, songwriter, multi-instrumentalist, and alleged criminal mastermind Skip Digits uses high-energy literature techniques to record his hit song "Clepsydra".

  • 1960: Mathematician and statistician Oskar Anderson dies. He made important contributions to mathematical statistics and econometrics.

    1960: Mathematician and statistician Oskar Anderson dies. He made important contributions to mathematical statistics and econometrics.

  • 1961: Spacecraft Venera 1 launched. It 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).

    1961: Spacecraft Venera 1 launched. It 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).

  • 1983: High-energy literature research project accidentally releases new class of crimes against mathematical constants.

    1983: High-energy literature research project accidentally releases new class of crimes against mathematical constants.

  • Charles Critchfield ID badge.gif

    1994: Mathematical physicist Charles Critchfield dies. He 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.

  • 2016: Steganographic analysis of Green Tangle reveals "at least a megabyte" of previously unknown Gnomon algorithm functions.

    2016: Steganographic analysis of Green Tangle reveals "at least a megabyte" of previously unknown Gnomon algorithm functions.

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