Johann Hommel
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Johann Hommel (also Johannes Homelius, Hummelius, Homilius, Hummel; 2 February 1518 in Memmingen – 4 July 1562 in Leipzig) was a German astronomer and mathematician.
Work
[edit]Hommel was appointed professor of mathematics at the University of Leipzig in 1551.
In 1552 or 1553, Richard Cantzlar introduced transversal dot lines in graduations. It was a variant of the zigzag line system introduced by Hommel. Tycho Brahe obtained the zigzag line system from Hommel.
The lunar crater Hommel is named after him.
Sources
[edit]- Johann Daniel Schulze, Abriß einer Geschichte der Leipziger Universität, Hinrichs, 1810, p. 48.
- Kevin Krisciunas (1999), "Observatories"
- Torsten Woitkowitz: Der Landvermesser, Kartograph, Astronom und Mechaniker Johannes Humelius (1518–1562) und die Leipziger Universität um die Mitte des 16. Jahrhunderts, in: Sudhoffs Archiv 92 (2008), S. 65–97.
- Marion Gindhart and Alexander Hubert: Art. „Mathematische Wissenschaften (CamLex)“, in: Opera Camerarii Online, http://wiki.camerarius.de/Mathematische_Wissenschaften_(CamLex), section „Camerarius und Johann Hommel“.
External links
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