Template:Selected anniversaries/July 23: Difference between revisions

Revision as of 09:48, 12 August 2019

1754: Joseph-Louis Lagrange publishes his first work, in the form of a letter in Italian. A month later he realized that he had rediscovered Leibniz's formula for the nth derivative of a product.
1829: William Austin Burt patents the typographer, a precursor to the typewriter.
1885: The well-known illustration Interview with Wallace War-Heels is stolen by math criminals, who demand computational ransom.
1934: Mathematician and crime-fighter Hans Hahn publishes new analysis of set theory which soons finds application in detecting and preventing crimes against mathematical constants.
1928: Astronomer and academic Vera Rubin born. She will discover the discrepancy between the predicted angular motion of galaxies and the observed motion, by studying galactic rotation curves.
1962: Mathematician and crime-fighter Alice Beta uses Telstar to communicate with AESOP.
1962: Telstar relays the first publicly transmitted, live trans-Atlantic television program, featuring Walter Cronkite.
2017: AESOP re-broadcasts Walter Cronkite's 1962 trans-Atlantic television program.

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 File:Typographer patent 1829.jpg|link=Typographer (typewriter) (nonfiction)|1829: William Austin Burt patents the [[Typographer (typewriter) (nonfiction)|typographer]], a precursor to the typewriter.
+||1875: Isaac Singer dies ... inventor, actor, and businessman. He made important improvements in the design of the sewing machine and was the founder of what became one of the first American multi-national businesses, the Singer Sewing Machine Company. Pic.
 ||1878: Carl von Rokitansky dies ... physician, pathologist, and philosopher. Pic.