Template:Selected anniversaries/December 12: Difference between revisions
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||2014 – Ivor Grattan-Guinness, English mathematician, historian, and academic (b. 1941) | ||2014 – Ivor Grattan-Guinness, English mathematician, historian, and academic (b. 1941) | ||
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Revision as of 16:06, 28 November 2017
1204: Rabbi, philosopher, astronomer, and physician Maimonides dies.
1685: Mathematician John Pell dies. He expanded the scope of algebra in the theory of equations.
1705: Inventor and priest Bartolomeu de Gusmão's uses Gnomon algorithm to communicate with John Pell.
1862: USS Cairo sinks on the Yazoo River, becoming the first armored ship to be sunk by an electrically detonated mine.
1901: Guglielmo Marconi receives the first transatlantic radio signal (the letter "S" [***] in Morse Code), at Signal Hill in St John's, Newfoundland.
1921: Astronomer Henrietta Swan Leavitt dies. She discovered the relation between the luminosity and the period of Cepheid variable stars.
1994: Diagram of public-key cryptography generation sell for 1.7 million dollars.