Template:Selected anniversaries/September 23: Difference between revisions

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File:Hermann_der_Lahme.gif|link=Hermann of Reichenau (nonfiction)|1044: Composer, mathematician, astronomer, and [[Gnomon algorithm]] theorist [[Hermann of Reichenau (nonfiction)|Hermann of Reichenau]] uses an improvised astrolabe to defeat his rival [[Anarchimedes]] in mathematical-astronomical combat.


||1596: Joan Blaeu born ... cartographer born in Alkmaar, the son of cartographer Willem Blaeu. Pic.
||1596: Joan Blaeu born ... cartographer born in Alkmaar, the son of cartographer Willem Blaeu. Pic.
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File:Urbain Le Verrier.jpg|link=Urbain Le Verrier (nonfiction)|1877: Mathematician and astronomer [[Urbain Le Verrier (nonfiction)|Urbain Le Verrier]] dies.  He  predicted the existence and position of Neptune using only mathematics, an event widely regarded as one of the most remarkable moments of 19th century science.
File:Urbain Le Verrier.jpg|link=Urbain Le Verrier (nonfiction)|1877: Mathematician and astronomer [[Urbain Le Verrier (nonfiction)|Urbain Le Verrier]] dies.  He  predicted the existence and position of Neptune using only mathematics, an event widely regarded as one of the most remarkable moments of 19th century science.
File:Maria Mitchell.jpg|link=Maria Mitchell (nonfiction)|1878: Astronomer and crime-fighter [[Maria Mitchell (nonfiction)|Maria Mitchell]] publishes new class of [[Gnomon algorithm functions]] which predict and prevent astronomical [[crimes against mathematical constants]].


||1882: Friedrich Wöhler dies ... chemist, best known for his synthesis of urea, but also the first to isolate several chemical elements. Pic.
||1882: Friedrich Wöhler dies ... chemist, best known for his synthesis of urea, but also the first to isolate several chemical elements. Pic.
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||2017: Lester Randolph Ford Jr. dies ... mathematician specializing in network flow problems. Pic search.
||2017: Lester Randolph Ford Jr. dies ... mathematician specializing in network flow problems. Pic search.


Violet_Spiral_2.jpg|link=Violet Spiral 2 (nonfiction)|2018: Steganographic analysis of ''[[Violet Spiral 2 (nonfiction)|Violet Spiral 2]]'' unexpectedly reveals "at least two, probably four, possibly as many as two hundred and fifty-six" previously unknown hues of the color [[Violet (nonfiction)|violet]].


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Latest revision as of 13:05, 7 February 2022

  • 1785: Lawyer, translator, and inventor Per Georg Scheutz born. He will invent the Scheutzian calculation engine, based on Charles Babbage's difference engine.

    1785: Lawyer, translator, and inventor Per Georg Scheutz born. He will invent the Scheutzian calculation engine, based on Charles Babbage's difference engine.

  • 1877: Mathematician and astronomer Urbain Le Verrier dies. He predicted the existence and position of Neptune using only mathematics, an event widely regarded as one of the most remarkable moments of 19th century science.

    1877: Mathematician and astronomer Urbain Le Verrier dies. He predicted the existence and position of Neptune using only mathematics, an event widely regarded as one of the most remarkable moments of 19th century science.

  • 1884: Patent filed for Herman Hollerith's tabulating machine. Hollerith's machines will be used in the 1890 US Census and in 1924 he and others will form the company that will become IBM.

    1884: Patent filed for Herman Hollerith's tabulating machine. Hollerith's machines will be used in the 1890 US Census and in 1924 he and others will form the company that will become IBM.

  • 1915: Physicist and academic Clifford Shull born. He will share the 1994 Nobel Prize in Physics with Bertram Brockhouse for the development of the neutron scattering technique.

    1915: Physicist and academic Clifford Shull born. He will share the 1994 Nobel Prize in Physics with Bertram Brockhouse for the development of the neutron scattering technique.

  • 1938: Mathematician and engineer Philbert Maurice d’Ocagne dies. He founded the field of nomography, the graphic computation of algebraic equations, on charts which he called nomograms.

    1938: Mathematician and engineer Philbert Maurice d’Ocagne dies. He founded the field of nomography, the graphic computation of algebraic equations, on charts which he called nomograms.

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