Jean Dominique Cassini
By DUPUIS, N.; after BAUBRUN, 1808
Jean Dominique Cassini De l’Acad.e Royale des Sciences Ne à Perinaldo dans la Comté de Nice, le 8 juin 1625 Mort à Paris, le 14 Septembre 1712.
- Author: DUPUIS, N.; after BAUBRUN
- Publication place: [Paris
- Publisher: À Paris du Odieuvre M.d. d’Estampes, quai de l’Ecole, vis-à-vis ka Samarit.e. à la belle Image CPR
- Publication date: Eighteenth century].
- Physical description: Engraved portrait.
- Dimensions: 150 by 110mm (6 by 4.25 inches).
- Inventory reference: 18165
Giovanni Domenico Cassini (1625–1712) an Italian mathematician and astronomer, who, on taking up French citizenship, changed his name to Jean-Dominique. He discovered four of the moons and the Cassini Division in the rings of Saturn in 1675. In cartography he was the first to make successful measurements of longitude by the method suggested by Galileo, using eclipses of the satellites of Jupiter as a clock, a method used to measure France accurately for the first time. On hearing that France was considerably smaller than expected, Louis XIV joked that Cassini had taken more of his kingdom from him than he had won in all his wars.
- Oxford History of Science Museum, 13626