Erhard Weigel
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Erhard Weigel by Pietro della Vecchia
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| Born | (1625-12-16)16 December 1625 |
| Died | 20 March 1699(1699-03-20) (aged 73) |
| Nationality | German |
| Education | University of Leipzig (M.A., 1650; Dr. phil. hab. 1652)[3] |
| Scientific career | |
| Fields | Mathematician, astronomer and philosopher |
| Institutions | University of Jena |
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| Academic advisors | Philipp Müller (1650 thesis advisor)[1] |
| Notable students | Gottfried Wilhelm Leibniz[2] Samuel von Pufendorf |
Erhard Weigel (16 December 1625 – 20 March 1699) was a German mathematician, astronomer and philosopher.
Weigel earned his M.A. (1650) and his habilitation (1652) from the University of Leipzig. From 1653 until his death he was professor of mathematics at Jena University. He was the teacher of Leibniz in summer 1663,[2] and other notable students. He also worked to make science more widely accessible to the public, and what would today be considered a populariser of science.
He concurred with Jakob Ellrod's "Mittel-Calendar",[4] and with the advocacy of Leibniz and others, that the date of Easter should be based on the astronomical measurement of the spring equinox and the next full moon. He followed Jakob Ellrod to the Imperial DietinRegensburg to advocate the use of the Mittel-Calendar or New Gregorian calendar.
(Source:[3])
Weigel was arguably one of the earliest German PhD holders.[3]
Through Leibniz, Weigel is the intellectual forefather of a long tradition of mathematicians and mathematical physicists that connects a great number of professionals to this day (see Academic genealogy of theoretical physicists: Erhard Weigel). The Mathematics Genealogy Project lists more than 50,000 "descendants" of Weigel's, including Lagrange, Euler, Poisson and several Fields Medalists.
The crater Weigel on the Moon is named after him. In 1999 a colloquium was held in Jena on the 300th anniversary of his death.
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