Template:Selected anniversaries/September 23: Difference between revisions

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||1791 – Johann Franz Encke, German astronomer and academic (d. 1865) Johann Franz Encke (German pronunciation: [ˈjoːhan ˈfʁants ˈɛŋkə]; 23 September 1791 – 26 August 1865) was a German astronomer. Among his activities, he worked on the calculation of the periods of comets and asteroids, measured the distance from the earth to the sun, and made observations of the planet Saturn.
||1791 – Johann Franz Encke, German astronomer and academic (d. 1865) Johann Franz Encke (German pronunciation: [ˈjoːhan ˈfʁants ˈɛŋkə]; 23 September 1791 – 26 August 1865) was a German astronomer. Among his activities, he worked on the calculation of the periods of comets and asteroids, measured the distance from the earth to the sun, and made observations of the planet Saturn.
 
||1819 – Hippolyte Fizeau, French physicist and academic (d. 1896)
||1819 – Hippolyte Fizeau, French physicist and academic (d. 1896) Armand Hippolyte Louis Fizeau FRS FRSE MIF[clarification needed] (23 September 1819 – 18 September 1896) was a French physicist, best known for measuring the speed of light in the namesake Fizeau experiment.


||1846 – Astronomers Urbain Jean Joseph Le Verrier, John Couch Adams and Johann Gottfried Galle collaborate on the discovery of Neptune.
||1846 – Astronomers Urbain Jean Joseph Le Verrier, John Couch Adams and Johann Gottfried Galle collaborate on the discovery of Neptune.

Revision as of 13:26, 29 October 2017