Ivan de Collong
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| Ivan de Collong | |
 Ivan de Collong
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| Born | 2 March [O.S. 22 February] 1838 Dinaburg, Vitebsk Guberniya, Russian Empire (now Daugavpils, Latvia) |
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| Died | 26 May [O.S. 13 May] 1901 Saint Petersburg, Russia |
Ivan Petrovich de Collong (Russian: Иван Петрович де-Колонг; German: Johann Clappier de Colongue; Latvian: Johans Aleksandrs Heinrihs Klapje de Kolongs) (2 March [O.S. 22 February] 1838–26 May [O.S. 13 May] 1901) was a Russian marine engineer and founder of a theory of magnetic deviation for magnetic compasses.
Ivan Petrovich de Collong was born in 1839 in Dinaburg (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 new type 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 of the Russian Academy of Sciences.
[edit] External links
- Ivan Petrovich de Collong at Great Soviet Encyclopedia - (Russian)
- Memoirs of Alexei Krylov - (Russian)
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