Template:Selected anniversaries/April 9: Difference between revisions
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File:Georg Cantor 1894.png|link=Georg Cantor (nonfiction)|1917: Mathematician and philosopher [[Georg Cantor (nonfiction)|Georg Cantor]] publishes new [[Set theory (nonfiction)|theory of sets]] derived from [[Gnomon algorithm functions]]. Colleagues hail it as "a magisterial contribution to science and art of detecting and preventing [[crimes against mathematical constants]]." | File:Georg Cantor 1894.png|link=Georg Cantor (nonfiction)|1917: Mathematician and philosopher [[Georg Cantor (nonfiction)|Georg Cantor]] publishes new [[Set theory (nonfiction)|theory of sets]] derived from [[Gnomon algorithm functions]]. Colleagues hail it as "a magisterial contribution to science and art of detecting and preventing [[crimes against mathematical constants]]." | ||
||1918: Jørn Utzon born ... architect, designed the Sydney Opera House. | ||1918: Jørn Utzon born ... architect, designed the Sydney Opera House. Pic. | ||
||1919: J. Presper Eckert born ... engineer, invented the ENIAC. | ||1919: J. Presper Eckert born ... engineer, invented the ENIAC. Pic (cool tech). | ||
||1921: Mary Jackson born ... mathematician and aerospace engineer. | ||1921: Mary Jackson born ... mathematician and aerospace engineer. Pic. | ||
||1922: Traugott Sandmeyer dies ... chemist after whom the Sandmeyer reaction, which he discovered 1884, was named. Sandmeyer also invented a new synthesis for indigo. Pic. | ||1922: Traugott Sandmeyer dies ... chemist after whom the Sandmeyer reaction, which he discovered 1884, was named. Sandmeyer also invented a new synthesis for indigo. Pic. | ||
Revision as of 12:20, 17 April 2019
1770: Physicist and academic Thomas Johann Seebeck born. He will discover the thermoelectric effect.
1805: Mathematician and crime-fighter Joseph-Louis Lagrange delivers lecture on applications of number theory to the detection and prevention of crimes against mathematical constants.
1860: On his phonautograph machine, Édouard-Léon Scott de Martinville makes the oldest known recording of an audible human voice. A visual recording of audio data, it will first be played back in 2008.
1864: Engineer and physicist Wilhelm Röntgen uses X-rays generator to expose loaded dice, reveals organized math crime cartel in casinos around the world.
1865: Mathematician and electrical engineer Charles Proteus Steinmetz born. He will foster the development of alternating current, formulating mathematical theories which will advance the expansion of the electric power industry in the United States.
1917: Mathematician and philosopher Georg Cantor publishes new theory of sets derived from Gnomon algorithm functions. Colleagues hail it as "a magisterial contribution to science and art of detecting and preventing crimes against mathematical constants."
1978: Musician and alleged math criminal Skip Digits performs at the Kennedy Center for the Arts.
2018: Green Tangle voted Picture of the Day by the citizens of New Minneapolis, Canada.