Книга: Encke Johann Franz «Resolucion General De Las Escuaciones Numericas Por El Metodo De Graeffe (Spanish Edition)»

Resolucion General De Las Escuaciones Numericas Por El Metodo De Graeffe (Spanish Edition)

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Издательство: "Книга по Требованию" (2011)

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Encke, Johann Franz

▪ German astronomer
born Sept. 23, 1791, Hamburg
died Aug. 26, 1865, Spandau, Ger.

      German astronomer who in 1819 established the period of the comet now known by his name (see Encke's Comet).

      Encke was educated at Hamburg and the University of Göttingen, where he worked under the direction of Carl Friedrich Gauss. In 1816 Encke became assistant at the Seeberg Observatory near Gotha, Ger., where he was made vice director in 1820 and director in 1822. In 1825 he was appointed professor of astronomy and director of the observatory of the University of Berlin. There he planned and supervised the construction of a new observatory, completed in 1835.

      Besides the comet that bears his name, Encke is also known for his discovery of Encke's Division, in the outermost ring of Saturn. From observations of the transits of Venus recorded in 1761 and 1769, he derived a value for the solar parallax (in effect, for the Sun's distance from the Earth) that, at 8″.57, is close to the presently accepted figure. He also established methods for calculating the orbits of minor planets and orbits of double stars.

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Источник: Encke, Johann Franz

См. также в других словарях:

  • Encke, Johann Franz — ▪ German astronomer born Sept. 23, 1791, Hamburg died Aug. 26, 1865, Spandau, Ger.       German astronomer who in 1819 established the period of the comet now known by his name (see Encke s Comet).       Encke was educated at Hamburg and the… …   Universalium

  • Encke , Johann Franz — (1791–1865) German astronomer The son of a Lutheran pastor from Hamburg, Encke was educated at Göttingen where he impressed Karl Gauss. In 1816 he was appointed to the staff of the Seeberg Observatory, Gotha, where he remained until 1825 when he… …   Scientists

  • Encke, Johann Franz — ► (1791 1865) Astrónomo alemán. Determinó la órbita del cometa que lleva su nombre …   Enciclopedia Universal

  • ENCKE, JOHANN FRANZ —    a celebrated German astronomer, born at Hamburg; determined the sun s distance, and the orbit of the comet of 1680; calculated the time of the revolution of the comet which now bears his name, and which appeared in 1818; determined also the… …   The Nuttall Encyclopaedia

  • Johann Franz Encke — Johann Encke Johann Franz Encke (* 23. September 1791 in Hamburg; † 26. August 1865 in Spandau bei Berlin) war ein deutscher Astronom. Er entdeckte u. a. die nach ihm benannte Enckesche Teilung des Saturnrings, berechnete die Bahnen von… …   Deutsch Wikipedia

  • Johann Franz Encke — Naissance 23 septembre 1791 Hambourg (Allemagne) Décès 26 août 1865 Spandau (Allemagne) Nationalité Allemande Champs …   Wikipédia en Français

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