Johann Caspar Horner ( German: Johann Caspar Horner ; 1774-1834) - Swiss astronomer .
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| Scientific field | astronomy |
He was going to become a priest, but later at the University of Gottingen he began to study astronomy. Participated in the First Russian round-the-world expedition on the ship "Hope" in 1803-1806, performed astronomical, cartographic and hydrometeorological works. Then for two years he was engaged in the processing of observations. The works “On the oscillation of the barometer between the tropics”, “The degree of warmth of sea water at different depths” and “Specific gravity of sea water” are included in the third volume of the swimming report published by I.F. Kruzenshtern .
In 1805, together with G.I. Langsdorf, he visited Japan with a scientific purpose. There he first demonstrated to the Japanese the flight of a hot air balloon made from washi .
Adjunct in Astronomy (1806-1808) [2] and foreign corresponding member of the St. Petersburg Academy of Sciences from 09.21.1808. He developed a method for the approximate solution of algebraic equations of high degrees, which he described in "Abhandlungen über die Curven zweiten Grades", 1820 and in "Fünf regelmäßigen Körper", 1831.
Notes
- ↑ 1 2 German National Library , Berlin State Library , Bavarian State Library , etc. Record # 116994193 // General regulatory control (GND) - 2012—2016.
- ↑ List of members of the Imperial Academy of Sciences, 1725-1907 / comp. B. L. Modzalevsky. - St. Petersburg, 1908. - p. 34
Literature
- G. v. Wyß .. Horner, Johann Kaspar // Allgemeine Deutsche Biographie (ADB). - Bd. 13. - Lpz. : Duncker & Humblot, 1881. - S. 151-156. (German)
- I.F. Kruzenshtern . " Traveling around the world in 1803, 1804, 1805 and 1806 on the ships" Hope "and" Neva " "
- I.K. Fedorova. Oceanian notes of I.K. Horner during the first Russian round-the-world expedition (1803–1806) and the problems of identifying objects from the Marquesas islands from the early MAE receipts // Culture and life of the Austronesian peoples: (History of collections and their collectors); Collection of MAE / resp. ed. P.L. Belkov, E.V. Revunenkova. - SPb. : Science . - T. 57.- S. 33-40. - ISBN 978-5-02-025219-6 .
- Horner, Johann Caspar on the official website of the RAS