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  • Patrice d'Arcy (1725 - 1779), comte d'Arcy, aussi connu comme le chevalier d'Arcy, est un mathématicien et militaire français d'origine irlandaise.
  • Граф Патрик д’Арси (фр. Patrick d'Arcy; 1725—1779) — инженер,физик и математик, член Парижской академии наук, французский бригадный генерал.
  • Patrick d'Arcy (27 September 1725 – 18 October 1779) was born in the west of Ireland. His family, who were Catholics, suffered under the penal laws. In 1739 d'Arcy was sent abroad by his parents to an uncle in Paris. He was tutored in mathematics by Jean-Baptiste Clairaut, and became a friend of Jean-Baptiste's son, Alexis-Claude Clairaut, (Alexis Clairaut), who was a brilliant young mathematician. d'Arcy made original contributions to dynamics. He is best known for his part in the discovery of the principle of angular momentum, in a form which was known as "the principle of areas," which he announced in 1746. See the article on areal velocity. d'Arcy also had an illustrious military career in the French army. He obtained the title of "Count" in the French nobility. He was a generous patron of Irish refugees in France. In addition to his contributions to dynamics, he performed research on artillery and on electricity. An experiment of his, reported in 1765, on visual perception is often referred to: it involved a rotating disk on which a burning coal was placed; when the disk was spun at an angular velocity exceeding seven revolutions per second, a full circle of light was perceived. d'Arcy was elected to the Academie Royale des Sciences in 1749. He died from cholera in Paris in October 1779.There is a copy of a portrait of d'Arcy in Wade (1997), [1], which was found in Charbonnier (1928).
dbpedia-owl:allegiance
  • France
dbpedia-owl:birthDate
  • 1725-09-27 (xsd:date)
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  • Patrick Darcy
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  • 54 (xsd:integer)
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  • 1779-10-18 (xsd:date)
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dbpedia-owl:feat
  • Fontenoy(1745)
  • Rossbach(1757)
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dbpedia-owl:rank
  • Maréchal de camp
dbpedia-owl:thumbnail
dbpedia-owl:thumbnailCaption
  • M. d'Arcy, parHubert Drouais(1742).
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  • Comte d'Arcy
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  • 2820807 (xsd:integer)
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  • 111 (xsd:integer)
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  • 108165394 (xsd:integer)
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prop-fr:allégeance
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  • 1747 (xsd:integer)
  • 1765 (xsd:integer)
  • 1928 (xsd:integer)
  • 1970 (xsd:integer)
  • 1997 (xsd:integer)
  • 2007 (xsd:integer)
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prop-fr:consultéLe
  • 2013-06-21 (xsd:date)
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  • 1779-10-18 (xsd:date)
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  • 1725-09-27 (xsd:date)
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prop-fr:langue
  • en
  • es
  • fr
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prop-fr:lieuDeDécès
  • Paris
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  • Kiltullagh House
prop-fr:légende
  • M. d'Arcy, par Hubert Drouais .
prop-fr:mère
  • Jane Lynch
prop-fr:nom
  • Casey
  • Wade
  • Charbonnier
  • Gillmor
  • Patrice d'Arcy
  • d'Arcy
prop-fr:nomDeNaissance
  • Patrick Darcy
prop-fr:origine
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  • 348 (xsd:integer)
  • 439 (xsd:integer)
  • 561 (xsd:integer)
  • 677 (xsd:integer)
prop-fr:prénom
  • J.
  • P. J.
  • Patrice
  • C. S.
  • N. J.
prop-fr:père
  • John Darcy
prop-fr:périodique
  • Dictionary of Scientific Biography
  • American Journal of Physics
  • Mémoires de l'Académie des sciences de Paris
prop-fr:site
  • Guest Editorial
  • Kiltullagh/Killimordaly
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  • 200 (xsd:integer)
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  • dbpedia-fr:Titre_de_courtoisie
  • Areal Velocity and Angular Momentum for Non-Planar Problems in Particle Mechanics
  • Darcy, Patrick
  • Essais sur l'histoire de la balistique
  • Principe général de dynamique
  • Sur la durée de la sensation de la vue
  • « Count Patrick Darcy »
  • « Perception »
prop-fr:url
  • http://www.perceptionweb.com/perception/perc0297/editorial.html
  • http://www.iol.ie/~mfinn/kiltullaghho.html
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  • 26 (xsd:integer)
  • 75 (xsd:integer)
  • III
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  • 54 (xsd:integer)
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  • Scribner's
  • Société d'éditions géographiques
dcterms:subject
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rdfs:comment
  • Patrice d'Arcy (1725 - 1779), comte d'Arcy, aussi connu comme le chevalier d'Arcy, est un mathématicien et militaire français d'origine irlandaise.
  • Граф Патрик д’Арси (фр. Patrick d'Arcy; 1725—1779) — инженер,физик и математик, член Парижской академии наук, французский бригадный генерал.
  • Patrick d'Arcy (27 September 1725 – 18 October 1779) was born in the west of Ireland. His family, who were Catholics, suffered under the penal laws. In 1739 d'Arcy was sent abroad by his parents to an uncle in Paris. He was tutored in mathematics by Jean-Baptiste Clairaut, and became a friend of Jean-Baptiste's son, Alexis-Claude Clairaut, (Alexis Clairaut), who was a brilliant young mathematician. d'Arcy made original contributions to dynamics.
rdfs:label
  • Patrice d'Arcy (physicien)
  • Patrick d'Arcy
  • Д’Арси, Патрик
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  • Patrice d'Arcy
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