Gassendi , Pierre
(1592–1655) French physicist and philosopher
Gassendi was born at Champtercier in France. After being educated in Aix and Paris, he gained a doctorate in theology from Avignon in 1616, was ordained in 1617, and in the same year was appointed to the chair of philosophy at Aix. In 1624 Gassendi moved to Digne where he served as provost of the cathedral until 1645 when he was elected to the professorship of mathematics at the Collège Royale in Paris, resigning because of illness in 1648.
As a practicing astronomer Gassendi made a large number of observations of comets, eclipses, and such celestial phenomena as the aurora borealis – a term he introduced himself. His most significant observation was of the 1631 transit of Mercury, the first transit to be observed, which he recorded in his Mercurius in sole visus (1632; Mercury in the Face of the Sun) as support for the new astronomy of Johannes Kepler.
In physics Gassendi attempted to measure the speed of sound and obtained the (too high) figure of 1473 feet per second. He also, in 1640, performed the much contemplated experiment of releasing a ball from the mast of a moving ship; as he expected, it fell to the foot of the mast in a straight line.
Gassendi's importance to science rests with his role as a propagandist and philosopher rather than as an experimentalist. Even though the Paris parliament declared in 1624 that on penalty of death “no person should either hold or teach any doctrine opposed to Aristotle,” Gassendi published in the same year hisExcertitationes…adversus Aristoteleos (Dissertations…against Aristotle), the first of his many works attacking both medieval Scholasticism and Aristotelianism. Nor did Gassendi find much attraction in the then emerging system of René Descartes. Instead he sought in his influential Animadversiones in decimum librum Diogenes Laertii (1649; Observations on the Tenth Book of Diogenes Laertius) to revive the classical atomism of Epicurus, suitably modified to ensure its compatibility with 17th-century Christianity. Unlike Epicurus he insisted that the atoms were created by God who also bestowed on man an immaterial soul; against Descartes he admitted the existence of the void within which his atoms could interact.
Gassendi's works were well known in England and exercised considerable influence on such leading scientists as Robert Boyle.

Scientists. . 2011.

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  • Gassendi, Pierre — • French philosopher and scientist. Article by J.G. Hagen covers Gassendi s life and work in some detail Catholic Encyclopedia. Kevin Knight. 2006 …   Catholic encyclopedia

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  • Gassendi, Pierre — (1592 1655)    philosopher, savant    Born in Champtercier, near Digne, where he was educated, Pierre Gassend, or Gassendi as he is known, in 1617 was named professor of philosophy at the University of Aix en Provence. For several years, he… …   France. A reference guide from Renaissance to the Present

  • Gassendi, Pierre — (1592–1655) French philosopher and mathematician. Born in Provence and educated as a priest, Gassendi taught at Digne and at Aix before being appointed to the chair of mathematics at the Royal College of France in Paris in 1645. His earliest work …   Philosophy dictionary

  • Gassendi, Pierre — See Seventeenth century materialism …   History of philosophy

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  • GASSENDI, PIERRE —    a French mathematician and philosopher, born in Provence; declared against scholastic methods out of deference to the empirical; controverted the metaphysics of Descartes; became the head of a school opposed to him; adopted the philosophy of… …   The Nuttall Encyclopaedia

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  • Gassendi — Pierre Gassendi (Pierre Gassend, Petrus Gassendi; * 22. Januar 1592 in Champtercier/Provence; † 24. Oktober 1655 in Paris) war ein französischer Theologe, Naturwissenschaftler und Philosoph. Pierre Gassendi Inhaltsverzeichnis …   Deutsch Wikipedia

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