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Jean-Louis Calandrini
Jean-Louis Calandrini (1703-1758). Portrait by the Geneva painter Robert Gardelle in 1760.
Born	(1703-08-30)August 30, 1703 Geneva, Republic of Geneva
Died	December 29, 1758(1758-12-29) (aged 55) Geneva, Republic of Geneva
Education	Academy of Geneva
Known for	Commentary on the Principia of Isaac Newton
Scientific career
Fields	Mathematics, philosophy, and physics
Workplaces	Academy of Geneva
Doctoral advisor	Jean-Antoine Gautier
Notable students	Georges-Louis Le Sage

Jean-Louis Calandrini (August 30, 1703 – December 29, 1758) was a Genevan scientist. He was a professor of mathematics and philosophy at the Academy of Geneva.

Biography

Calandrini's father was a Reformed pastor, also named Jean-Louis, and his mother was Michée Du Pan. He was the grandnephew of Bénédict Calandrini. In 1729, he married Renée Lullin. At the Academy of Geneva, he obtained his doctorate in physics (1722). In 1724, Calandrini was named mathematics professor at the same time as Gabriel Cramer, but he first undertook a three-year journey to France and England. He was appointed professor of philosophy from 1734 to 1750. He also played an active role on the political scene of Geneva.

Calandrini was the author of some studies on the aurora borealis, comets, and the effects of lightning, as well as of an important but unpublished work on flat and spherical trigonometry. He also wrote a commentary on the Principia of Isaac Newton (published in Geneva, 1739–42), for which he wrote approximately one hundred footnotes.

He was also known as a botanist. The genus Calandrinia was named after him.

Sources

• "Jean-Louis Calandrini" in German, French and Italian in the online Historical Dictionary of Switzerland.