Fritz Cohn
Fritz Cohn (born May 12, 1866 in Königsberg i. Pr. , † December 14, 1922 in Berlin ) was a German astronomer.
Life
Cohn came from a Jewish family. At the age of 11 he lost his father. He attended the Altstädtische Gymnasium (Königsberg) and passed the school leaving examination at the age of 17. From 1883 he studied mathematics , physics and astronomy (as well as geography and history) at the Albertus University in Königsberg and the Friedrich Wilhelms University in Berlin . In 1888 he passed the state examination in Königsberg. In the same year he was promoted to Dr. phil. PhD.
Since 1891 computer at the observatory in Königsberg , he qualified as a professor for mathematics and astronomy in Königsberg in 1893. He was given leave of absence at the Leipzig observatory for a year . In Königsberg he became an assistant in 1898 and an observer in 1900. The University of Königsberg appointed him associate professor in 1895 . In 1909, the Friedrich Wilhelms University in Berlin appointed him to the chair for theoretical and computational astronomy. As director of the Astronomical Computing Institute he devoted himself, among other things, to determining the orbit of asteroids . The asteroid (972) Cohnia was named after him.
At the age of 56 he succumbed to gastric cancer .
From 1916 to 1922, Cohn was editor of the annual astronomical report . For the Encyclopedia of Mathematical Sciences he wrote articles about astronomical observation measuring instruments and errors as well as the reduction of astronomical measurement data.
He was married to Johanna Peters (1871–1955), a daughter of the director of the Königsberg observatory Carl Friedrich Wilhelm Peters , with whom he had the son Jürgen (* 1905 in Königsberg; † 1982 in Blankenfelde) and two daughters.
literature
- Felix Schmeidler : Cohn, Fritz. In: New German Biography (NDB). Volume 3, Duncker & Humblot, Berlin 1957, ISBN 3-428-00184-2 , p. 315 ( digitized version ).
- P. Neugebauer , Obituary for Fritz Cohn, Popular Astronomy 31 (1923), p. 293.
- Cohn, Fritz , in: Encyclopaedia Judaica , 1972, Volume 5, Sp. 689f.
Web links
- Literature by and about Fritz Cohn in the catalog of the German National Library
- Pictures of the buildings of the Astronomical Computing Institute in Berlin ( Memento from July 14, 2006 in the Internet Archive )
- Publications by F. Cohn in the Astrophysics Data System
- Obituaries for F. Cohn in the Astrophysics Data System
Individual evidence
- ^ A b Cassirer and Cohen
- ↑ Dissertation: About Lamé functions with complex parameters .
- ↑ Habilitation thesis: About the quantities formed in a recurrent manner and their relationship with the algebraic equations .
- ↑ The newer methods of determining the orbit . Quarterly journal of the Astronomical Society 53 (1918), p. 27
- ↑ J. Peters: Fritz Cohn (harvard.edu)
| personal data | |
|---|---|
| SURNAME | Cohn, Fritz |
| BRIEF DESCRIPTION | German astronomer |
| DATE OF BIRTH | May 12, 1866 |
| PLACE OF BIRTH | Koenigsberg i. Pr. |
| DATE OF DEATH | December 14, 1922 |
| Place of death | Berlin |