Template:Selected anniversaries/August 20: Difference between revisions
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||1710: Thomas Simpson born ... mathematician and academic. Pic: book cover. | ||1710: Thomas Simpson born ... mathematician and academic. Pic: book cover. | ||
||1719: Christian Mayer born ... astronomer and educator. He is most noted for pioneering the study of binary stars, although his equipment was ill-suitable for distinguishing between true binaries and coincident star alignments. In 1777-78 he compiled a catalog of 80 double stars, which he published in 1781. Pic. | |||
||1779: Jöns Jacob Berzelius born ... Swedish chemist and academic. Pic. | ||1779: Jöns Jacob Berzelius born ... Swedish chemist and academic. Pic. | ||
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||1831: Eduard Suess born ... geologist who helped lay the basis for paleogeography and tectonics (the study of the architecture and evolution of the Earth's outer rocky shell). He was an authority on structural geology, especially of mountains, and postulated the existence of the giant land mass Gondwanaland. Pic. | ||1831: Eduard Suess born ... geologist who helped lay the basis for paleogeography and tectonics (the study of the architecture and evolution of the Earth's outer rocky shell). He was an authority on structural geology, especially of mountains, and postulated the existence of the giant land mass Gondwanaland. Pic. | ||
||1858: Charles Darwin first publishes his theory of evolution through natural selection in The Journal of the Proceedings of the Linnean Society of London, alongside Alfred Russel Wallace's same theory. | ||1858: Charles Darwin first publishes his theory of evolution through natural selection in The Journal of the Proceedings of the Linnean Society of London, alongside Alfred Russel Wallace's same theory. Pic. | ||
||1863: Corrado Segre born ... mathematician who is remembered today as a major contributor to the early development of algebraic geometry. Pic. | ||1863: Corrado Segre born ... mathematician who is remembered today as a major contributor to the early development of algebraic geometry. Pic. | ||
Revision as of 18:44, 25 March 2019
1672: Mathematician and politician Johan de Witt dies in a riot. The rioters will partially eat his body.
1911: The first cable message sent around the world from the U.S. by commercial telegraph was transmitted from New York City. It read “This message sent around the world,” left the New York Times building at 7:00 pm and was received at 7:16 pm after travelling nearly 29,000 miles through 16 relays via the Azores, Gibraltar, India, Phillipines, Midway, Guam, Hawaii and San Francisco.
1912: Thomas Edison receives U.S. patent No. 1036470 for a “Phonographic Apparatus,” and No. 1036471 for a “Storage Battery.”
1923: Miniaturized version of John Ambrose Fleming delivers lecture from within Fleming tube.
1942: The first visible quantity of a plutonium compound, plutonium(IV) iodate, is isolated by nuclear chemists Burris Cunningham and Louis Werner.
1961: Physicist and academic Percy Williams Bridgman dies. He won the 1946 Nobel Prize in Physics for his work on the physics of high pressures.
1962: Mathematician and crime-fighter Alice Beta publishes new class of Gnomon algorithm functions which detect and prevent crimes against mathematical constants.