| Jean Alexander Heinrich Clapier de Colongue | |
|---|---|
 Jean Alexander Heinrich Clapier de Colongue | |
| Born | 6 March [O.S. 22 February] 1838 Dünaburg, Vitebsk Governorate, Russian Empire (now Daugavpils, Latvia) |
| Died | 26 May [O.S. 13 May] 1901 Saint Petersburg, Russia |
| Occupation | Engineer |
| Known for | Theory of magnetic deviation for magnetic compasses |
Jean Alexander Heinrich Clapier de Colongue (Russian: Ivan Petrovich de-Kolong; Иван Петрович де-Колонг; Latvian: Johans Aleksandrs Heinrihs Klapje de Kolongs) (6 March [O.S. 22 February] 1838–26 May [O.S. 13 May] 1901) was a Baltic German marine engineer and founder of a theory of magnetic deviation for magnetic compasses, living and working in Imperial Russia.
Biography
Ivan Petrovich de Collong was born in 1839 in Dünaburg (now Daugavpils) into a Baltic German noble family originally of Franco-Portuguese origin. He studied at the Naval Academy in Saint Petersburg and from 1870 he worked there as a lecturer. Starting in 1878 he was head of the Navy's Main Hydrographical Administration. In 1875, he constructed a deflector (a new type of compass baffle) and later improved upon its design.
De Collong was a Corresponding Member of the Russian Academy of Sciences (from 1896) and a Major-General of the Imperial Russian Navy. He was awarded the Lomonosov Prize by the Russian Academy of Sciences.
See also
References
- Колонг Иван Петрович in the Great Soviet Encyclopedia (in Russian) – via Great Scientific Library
External links
- Memoirs of Alexei Krylov (in Russian)
- Genealogy handbook of Baltic nobility Clapier de Colongue's (in German)
  | This biographical article related to the Russian military is a stub. You can help Misplaced Pages by expanding it. |
- 1839 births
- 1901 deaths
- People from Daugavpils
- People from Dvinsky Uyezd
- Baltic-German people from the Russian Empire
- Inventors from the Russian Empire
- Engineers from the Russian Empire
- Imperial Russian Navy personnel
- Marine engineers
- Corresponding members of the Saint Petersburg Academy of Sciences
- Russian military personnel stubs