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Foucault, Jean Bernard Léon

(Encyclopedia)Foucault, Jean Bernard Léon zhäN bĕrnärˈ lāôNˈ fo͞okōˈ [key], 1819–68, French physicist. Known especially for his research on the speed of light, he determined its velocity in air and fou...

González de León, Teodoro

(Encyclopedia)González de León, Teodoro, 1926–2016, Mexican architect, b. Mexico City. After studying at the National Autonomous University of Mexico (1942–47), he was a draftsman (1948–49) in Le Corbusier'...

Alfonso V, Spanish king of León

(Encyclopedia)Alfonso V (Alfonso the Noble), 994?–1027, Spanish king of León (999–1027). While he was still a minor, the Moorish ruler al-Mansur died, and the Spanish court recovered the city of León. Alfonso...

Cooper, Leon Neil

(Encyclopedia)Cooper, Leon Neil, 1930–, American neuroscientist, b. New York City, Ph.D. Columbia, 1954. Cooper was a researcher at the Univ. of Illinois from 1955 to 1957 and at Ohio State Univ. from 1957 to 195...

Faidherbe, Louis Léon César

(Encyclopedia)Faidherbe, Louis Léon César lwē lāôNˈ sāzärˈ fādĕrbˈ [key], 1818–89, French colonial administrator. He was a leading participant in the establishment of the French colonial empire in Afr...

Panetta, Leon Edward

(Encyclopedia)Panetta, Leon Edward, 1938–, U.S. politician and government official, b. Monterey, Calif., grad. Univ. of Santa Clara, Calif. (B.A., 1960), Santa Clara Law School (1963). After serving in the army (...

Alfonso IX, Spanish king of León

(Encyclopedia)Alfonso IX, 1171–1230, Spanish king of León (1188–1230), son and successor of Ferdinand II. He conquered from the Moors several cities in Extremadura and was frequently at war with Alfonso VIII o...

Lamoricière, Christophe Léon Louis Juchault de

(Encyclopedia)Lamoricière, Christophe Léon Louis Juchault de krēstôfˈ lāôNˈ lwē zhüshōˈ də lämôrēsyĕrˈ [key], 1806–65, French general. Important in the conquest of Algeria, he distinguished hims...

Ferdinand III, Spanish king of Castile and León

(Encyclopedia)Ferdinand III, 1199–1252, Spanish king of Castile (1217–52) and León (1230–52), son of Alfonso IX of León and Berenguela of Castile. At the death (1217) of her brother, Henry I of Castile, Ber...