Rudolf Lehmann-Filhés

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Rudolf Lehmann-Filhés (born April 12, 1854 in Berlin ; † May 30, 1914 there ) was a German mathematician and astronomer.

Life

His father of the same name was a teacher. His mother Bertha (* 1819; † after 1887), a daughter of the landowner Filhés in Kammerswaldau , was a writer. His uncle was the philosopher Karl Rosenkranz .

After a few semesters at the Berlin Bauakademie, he switched to studying astronomy at the Berlin University, received his doctorate in 1878 with the thesis on the theory of falling stars and qualified as a private lecturer in 1881. In 1891 he was at the University of Berlin for ao appointed professor and in 1909 to the o. Professor of mathematics and physics. He also taught for three decades at the War Academy. In 1887 he was elected a member of the Leopoldina .

He developed methods for determining meteor orbits and for determining the orbit of spectroscopic binary stars. From 1891 he was secretary of the Astronomical Society and published its quarterly.

Publications

  • On the theory of falling stars. 1878.
  • The determination of meteor orbits, along with related tasks. 1883.
  • About the secular perturbation of the length of the moon under the assumption of a not momentarily propagating gravity. Munich 1896.

supporting documents

  1. ↑ Lehmann-Filhés. In: Meyers Großes Konversations-Lexikon. Volume 12. Leipzig 1908, p. 333.
  2. ^ Dieter B. Herrmann:  Lehmann-Filhés, Rudolf. In: New German Biography (NDB). Volume 14, Duncker & Humblot, Berlin 1985, ISBN 3-428-00195-8 , pp. 97 f. ( Digitized version ).

literature

Web links

personal data
SURNAME Lehmann-Filhés, Rudolf
BRIEF DESCRIPTION German mathematician and astronomer
DATE OF BIRTH April 12, 1854
PLACE OF BIRTH Berlin
DATE OF DEATH May 30, 1914
Place of death Berlin