Johann Hommel
Johann Hommel (also Homelius, Hummelius, Homilius, Hummel; 2 February 1518 in Memmingen – 4 July 1562 in Leipzig) was a German astronomer and mathematician.
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
- (English) Observatories
- Johann Hommel at the Mathematics Genealogy Project
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