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Jacques Cassini (18 February 1677 – 16 April 1756) was a French astronomer, son of the famous Italian astronomer Giovanni Domenico Cassini. He was known as Cassini II. Cassini was born at the Paris Observatory.
Jacques Cassini was a French astronomer who compiled the first tables of the orbital motions of Saturn’s satellites. He succeeded his father, the astronomer Gian Domenico Cassini, as head of the Paris Observatory in 1712, and in 1718 he completed the measurement of the arc of the meridian
- The Editors of Encyclopaedia Britannica
Jacques Cassini. 1677-1756. Italian astronomer who fervently supported René Descartes' prediction that Earth is a prolate spheroid—elongated polar axis—against Isaac Newton's prediction that it is an oblate spheroid—bulging equator and flattened poles.
Jacques Cassini or Cassini II was a French astronomer and surveyor who carried on his father's work in geodesy. View one larger picture. Biography. Jacques Cassini was the son of Jean-Dominique Cassini and Geneviève de Laistre.
An ardent opponent of Sir Isaac Newton’s gravitational theory, he continually defended his father’s work, but he was unable to reconcile his observations with his father’s theories. Jacques Cassini died on April 18, 1756, in Thury, France.
Jacques Cassini, who was mainly an observationalist, was a fervent Cartesian who fought hard to reconcile the facts of observation with the theory of vortices. He was a lukewarm Copernican and never admitted Newtonian gravitation.
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Jacques Cassini. (1677—1756) Quick Reference. (1677–1756) Frenchastronomer and geodesist, son of G. D. Cassini; also known as Giacomo Cassini. His accurate determination of the length of an arc of a meridian passing through France, later extended by his son César François, showed that the Earth is an oblate spheroid (i.e. flattened at the poles).
