Ivan de Collong
Encyclopedia
Jean Alexander Heinrich Clapier de Colongue (–) was a Russian
Russians
The Russian people are an East Slavic ethnic group native to Russia, speaking the Russian language and primarily living in Russia and neighboring countries....

 marine engineer and founder of a theory of magnetic deviation
Magnetic deviation
Magnetic deviation is the error induced in a compass by local magnetic fields, which must be allowed for, along with magnetic declination, if accurate bearings are to be calculated....

 for magnetic compass
Compass
A compass is a navigational instrument that shows directions in a frame of reference that is stationary relative to the surface of the earth. The frame of reference defines the four cardinal directions – north, south, east, and west. Intermediate directions are also defined...

es.

Ivan Petrovich de Collong was born in 1839 in Dünaburg
Daugavpils
Daugavpils is a city in southeastern Latvia, located on the banks of the Daugava River, from which the city gets its name. Daugavpils literally means "Daugava Castle". With a population of over 100,000, it is the second largest city in the country after the capital Riga, which is located some...

 (now Daugavpils) into a Baltic German
Baltic German
The Baltic Germans were mostly ethnically German inhabitants of the eastern shore of the Baltic Sea, which today form the countries of Estonia and Latvia. The Baltic German population never made up more than 10% of the total. They formed the social, commercial, political and cultural élite in...

 noble family originally of Franco-Portuguese origin. He studied at the Naval Academy
Naval Academy
-Institutions:* The United States Naval Academy* The Indian Naval Academy of India* The Nikola Vaptsarov Naval Academy of Bulgaria* The Imperial Japanese Naval Academy* The École Navale of France* The Britannia Royal Naval College of the United Kingdom...

 in Saint Petersburg
Saint Petersburg
Saint Petersburg is a city and a federal subject of Russia located on the Neva River at the head of the Gulf of Finland on the Baltic Sea...

 and from 1870 he worked there as a lecturer. Starting in 1878 he was head of the Navy's Main Hydrographical
Hydrography
Hydrography is the measurement of the depths, the tides and currents of a body of water and establishment of the sea, river or lake bed topography and morphology. Normally and historically for the purpose of charting a body of water for the safe navigation of shipping...

 Administration. In 1875 he constructed deflector (a new type of compass baffle
Baffle
Baffle or baffles may refer to:* Baffle , a flow-directing vane or panel in some vessels such as shell and tube heat exchangers, chemical reactors, or static mixers...

) and later improved upon its design.

De Collong was a Corresponding Member of the Russian Academy of Sciences
Russian Academy of Sciences
The Russian Academy of Sciences consists of the national academy of Russia and a network of scientific research institutes from across the Russian Federation as well as auxiliary scientific and social units like libraries, publishers and hospitals....

 (from 1896) and a Major-General of the Imperial Russian Navy
Imperial Russian Navy
The Imperial Russian Navy refers to the Tsarist fleets prior to the February Revolution.-First Romanovs:Under Tsar Mikhail Feodorovich, construction of the first three-masted ship, actually built within Russia, was completed in 1636. It was built in Balakhna by Danish shipbuilders from Holstein...

. He was awarded the Lomonosov Prize of the Russian Academy of Sciences
Russian Academy of Sciences
The Russian Academy of Sciences consists of the national academy of Russia and a network of scientific research institutes from across the Russian Federation as well as auxiliary scientific and social units like libraries, publishers and hospitals....

.

External links

  • Ivan Petrovich de Collong at Great Soviet Encyclopedia
    Great Soviet Encyclopedia
    The Great Soviet Encyclopedia is one of the largest and most comprehensive encyclopedias in Russian and in the world, issued by the Soviet state from 1926 to 1990, and again since 2002 .-Editions:There were three editions...

     
  • Memoirs of Alexei Krylov
    Alexei Krylov
    Aleksey Nikolaevich Krylov was a Russian naval engineer, applied mathematician and memoirist.-Biography:Alexei Nikolaevich Krylov was born on August 3 O.S., 1863 to the family of an Army Artillery officer in a village Akhmatovo near town Alatyr of the Simbirsk Gubernia in Russia...

     
  • Genealogy handbook of Baltic nobility Clapier de Colongue's
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