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Sieyès, Emmanuel Joseph

(Encyclopedia)Sieyès, Emmanuel Joseph ĕmänüĕlˈ zhôzĕfˈ syāĕsˈ [key], 1748–1836, French revolutionary and statesman. He was a clergyman before the Revolution and was known as Abbé Sieyès. His pamphle...

Morny, Charles Auguste Louis Joseph, duc de

(Encyclopedia)Morny, Charles Auguste Louis Joseph, duc de shärl ōgüstˈ lwē zhôzĕfˈ dük də môrnēˈ [key], 1811–65, French statesman; illegitimate son of Hortense de Beauharnais and the comte de Flahaut...

LaFontaine, Sir Louis Hippolyte

(Encyclopedia)LaFontaine, Sir Louis Hippolyte ləwēˈ ēpôlētˈ läfôNtĕnˈ [key], 1807–64, Canadian political leader, b. Lower Canada (now Quebec). A lawyer, he entered (1830) the Legislative Assembly of Lo...

Scully, Vincent Joseph, Jr.

(Encyclopedia)Scully, Vincent Joseph, Jr., 1920–2018, American architectural historian, b. New Haven, Conn., grad. Yale (B.A., 1940; Ph.D., 1949). As a professor of art history at Yale (1947–91, though he taugh...

atomic weight

(Encyclopedia)atomic weight, mean (weighted average) of the masses of all the naturally occurring isotopes of a chemical element, as contrasted with atomic mass, which is the mass of any individual isotope. Althoug...

kinetic-molecular theory of gases

(Encyclopedia)kinetic-molecular theory of gases, physical theory that explains the behavior of gases on the basis of the following assumptions: (1) Any gas is composed of a very large number of very tiny particles ...

Farrakhan, Louis

(Encyclopedia)Farrakhan, Louis fârˈəkănˌ, färˈəkänˌ [key], 1933–, African-American religious leader, b. New York City, as Louis Eugene Walcott. A former calypso singer known as “The Charmer,” he joi...

Hémon, Louis

(Encyclopedia)Hémon, Louis lwē āmôNˈ [key], 1880–1913, French Canadian novelist, b. France. After working as a journalist for French publications in England (1903–11), he moved to Quebec, where he worked a...

Hennepin, Louis

(Encyclopedia)Hennepin, Louis hĕnˈəpĭn [key], 1640–1701?, French cleric and explorer in North America. A Franciscan Recollect friar, Hennepin came to Canada in 1675, meeting on the journey La Salle, who made ...

Hébert, Louis

(Encyclopedia)Hébert, Louis ləwēˈ [key], 1575–1627, French pioneer, known as the first Canadian farmer. A Paris apothecary, he spent 10 years (1604–14) in Acadia, and at Port Royal (now Annapolis Royal, N.S...