Jean Alexander Heinrich Clapier de Colongue
{{Short description|Russian engineer (1838–1901)}}
{{Infobox person
| name = Jean Alexander Heinrich Clapier de Colongue
| image = De Kolong.jpg
| caption = Jean Alexander Heinrich Clapier de Colongue
| birth_date = {{OldStyleDate|6 March|1838|22 February}}
| birth_place = Dünaburg, Vitebsk Governorate, Russian Empire (now Daugavpils, Latvia)
| death_date = {{OldStyleDate|26 May|1901|13 May}}
| death_place = Saint Petersburg, Russia
| occupation = Engineer
| known_for = Theory of magnetic deviation for magnetic compasses
}}
Jean Alexander Heinrich Clapier de Colongue ({{langx|ru|Ivan Petrovich de-Kolong; Иван Петрович де-Колонг}}; {{langx|lv|Johans Aleksandrs Heinrihs Klapje de Kolongs}}) ({{OldStyleDate|6 March|1838|22 February}}–{{OldStyleDate|26 May|1901|13 May}}) was a Baltic German marine engineer and founder of a theory of magnetic deviation for magnetic compasses, living and working in Imperial Russia.{{GSEn|062945|Колонг Иван Петрович}}
Biography
Ivan Petrovich de Collong was born in 1839 in Dünaburg (now Daugavpils) into a Baltic German noble family originally of Franco-Portuguese origin.{{citation needed|date=July 2012}} 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
{{Reflist}}
External links
- [https://web.archive.org/web/20070927233659/http://vivovoco.rsl.ru/VV/PAPERS/BIO/KRYLOV/KRYLOV_07.HTM Memoirs of] Alexei Krylov {{in lang|ru}}
- [https://web.archive.org/web/20190514095947/http://mdz10.bib-bvb.de/~db/bsb00000601/images/index.html?seite=73 Genealogy handbook of Baltic nobility] Clapier de Colongue's {{in lang|de}}
{{Authority control}}
{{DEFAULTSORT:Clapier de Colongue, Jean Alexander Heinrich}}
Category:People from Daugavpils
Category:People from Dvinsky Uyezd
Category:Baltic-German people from the Russian Empire
Category:Inventors from the Russian Empire
Category:Engineers from the Russian Empire
Category:Imperial Russian Navy personnel
Category:Corresponding members of the Saint Petersburg Academy of Sciences
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