Proust's law

Proust's law
Proust's law 'prüsts- n LAW OF DEFINITE PROPORTIONS
Proust prüst Joseph-Louis (1754-1826)
French chemist. Proust spent the major part of his professional life in Spain where he taught chemistry and undertook laboratory research. He was an outstanding chemical analyst. In his use of quantitative methods he consistently gave the results of his analyses in terms of percentage weight composition and sometimes the weight of oxygen or sulfur in comparison with the constant weight of the metal under analysis. In 1808 he proved that the relative quantities of any given pure chemical compound's constituent elements remain constant, regardless of the source of the compound. He thereby provided important evidence to support John Dalton's law of definite proportions.

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l. of definite proportions.

Medical dictionary. 2011.

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  • proust's law — ˈprüsts noun Usage: usually capitalized P Etymology: after J. L. Proust : law of definite proportions …   Useful english dictionary

  • Proust, Joseph-Louis — ▪ French chemist Introduction also known as  Luis Proust  born Sept. 26, 1754, Angers, France died July 5, 1826, Angers  French chemist who proved that the relative quantities of any given pure chemical compound s constituent elements remain… …   Universalium

  • Law of definite proportions — In chemistry, the law of definite proportions, sometimes called Proust s Law, states that a chemical compound always contains exactly the same proportion of elements by mass. An equivalent statement is the law of constant composition, which… …   Wikipedia

  • Proust , Joseph Louis — (1754–1826) French chemist Proust was born the son of an apothecary at Angers in northwest France. He studied in Paris and became chief apothecary at the Saltpêtrière Hospital. In 1789 he went to Madrid to become director of the Royal Laboratory… …   Scientists

  • Proust, Joseph-Louis — (1754 1826)    chemist    Best known for establishing the chemical law of definitive proportions, sometimes called Proust s Law, Joseph Louis Proust was born in Angers. In 1784, he accompanied jean françois pilâtre de rozier in a balloon ascent.… …   France. A reference guide from Renaissance to the Present

  • law of definite proportions — law of def·i·nite pro·por·tions def (ə )nət prə pȯr shənz n a statement in chemistry: every definite compound always contains the same elements in the same proportions by weight * * * any compound always contains the same kind of elements in the …   Medical dictionary

  • Proust, Marcel — born July 10, 1871, Auteuil, near Paris, France died Nov. 18, 1922, Paris French novelist. Born to a wealthy family, he studied law and literature. His social connections allowed him to become an observant habitué of the most exclusive drawing… …   Universalium

  • Proust (disambiguation) — The name Proust can refer to: * Joseph Proust (1754 ndash;1826), French chemist, responsible for the Law of definite proportions * Antonin Proust (1832 ndash;1905), French journalist and politician * Marcel Proust (1871 ndash;1922), French author …   Wikipedia

  • Proust, Marcel — (1871 1922)    writer    Marcel Proust, the creator of the multivolume À la recherche du temps perdu (In Search of Lost Time, also known as Remembrance of Things Past; 1913 22), the novel regarded as one of the finest achievements in world… …   France. A reference guide from Renaissance to the Present

  • law — 1. A principle or rule. 2. A statement of fact detailing a sequence or relation of phenomena that is invariable under given conditions. SEE ALSO: principle, rule, theorem. [A.S. lagu] Alexander l. states that a jerky nystagmus becomes worse when… …   Medical dictionary

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