Template:Selected anniversaries/September 9: Difference between revisions

Revision as of 05:51, 3 February 2019

1737: Physician and physicist Luigi Galvani born. In 1780, he will discover that the muscles of dead frogs' legs twitch when struck by an electrical spark.
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."
1947: First case of a computer bug being found: A moth lodges in a relay of a Harvard Mark II computer at Harvard University.
1975: Viking program: Viking 2 launched. Following a 333-day cruise to Mars, the Viking orbiter will begin returning global images of Mars.
2003: Theoretical physicist and academic Edward Teller dies. He is known colloquially as "the father of the hydrogen bomb", although he did not care for the epithet.
2017: Dennis Paulson of Mars celebrates the forty-second anniversary of the launch of the Viking 2 spacecraft.
2018: Updated version of Embassy published. "The old version was so dark, it was barely visible. This version is much more to my taste," says artist Karl Jones.

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 ||1789: William Cranch Bond born ... astronomer, and the first director of Harvard College Observatory. Pic.
-||1839: John Herschel takes the first glass plate photograph.
+||1839: John Herschel takes the first glass plate photograph. Pic.
+||1841: Augustin Pyramus de Candolle born ... botanist, mycologist, and academic. Pic.
 ||1852: John Henry Poynting born ... physicist. He was the developer and eponym of the Poynting vector, which describes the direction and magnitude of electromagnetic energy flow and is used in the Poynting theorem, a statement about energy conservation for electric and magnetic fields. Pic.
-||1854: Baron Yamakawa Kenjirō ...Japanese samurai of the late Edo period who went on to become a noted physicist, university president, and author of several histories of the Boshin War.
+||1854: Baron Yamakawa Kenjirō ...Japanese samurai of the late Edo period who went on to become a noted physicist, university president, and author of several histories of the Boshin War. Pic.
-||1860: Frank Morley born ... mathematician, known mostly for his teaching and research in the fields of algebra and geometry.
+||1860: Frank Morley born ... mathematician, known mostly for his teaching and research in the fields of algebra and geometry. Pic.
 ||1883: Victor Alexandre Puiseux dies ... mathematician and astronomer. Puiseux series are named after him, as is in part the Bertrand–Diquet–Puiseux theorem.