Template:Selected anniversaries/September 23: Difference between revisions

Revision as of 14:07, 8 July 2017

1877: Mathematician and astronomer Urbain Le Verrier dies. He predicted the existence and position of Neptune using only mathematics, an event widely regarded as one of the most remarkable moments of 19th century science.

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 ||1785: Per Georg Scheutz born.
+||1791 – Johann Franz Encke, German astronomer and academic (d. 1865)
+||1819 – Hippolyte Fizeau, French physicist and academic (d. 1896)
+||1846 – Astronomers Urbain Jean Joseph Le Verrier, John Couch Adams and Johann Gottfried Galle collaborate on the discovery of Neptune.
+||1851 – Ellen Hayes, American mathematician and astronomer (d. 1930)
 File:Urbain Le Verrier.jpg|link=Urbain Le Verrier (nonfiction)|1877: Mathematician and astronomer [[Urbain Le Verrier (nonfiction)|Urbain Le Verrier]] dies.  He  predicted the existence and position of Neptune using only mathematics, an event widely regarded as one of the most remarkable moments of 19th century science.
-File:Omar Khayyam.jpg|link=Omar Khayyam (nonfiction)|[[Omar Khayyam (nonfiction)|Omar Khayyam]] invents new form of [[Gnomon algorithm]].
+||1902 – Su Buqing, Chinese mathematician and academic (d. 2003)
+||1915 – Clifford Shull, American physicist and academic, Nobel Prize laureate (d. 2001)
+||1926 – André Cassagnes, French toy maker, created the Etch A Sketch (d. 2013)
+||1999 – NASA announces that it has lost contact with the Mars Climate Orbiter.
+|File:Omar Khayyam.jpg|link=Omar Khayyam (nonfiction)|[[Omar Khayyam (nonfiction)|Omar Khayyam]] invents new form of [[Gnomon algorithm]].
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