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Humphrey, Hubert Horatio

(Encyclopedia)Humphrey, Hubert Horatio, 1911–78, U.S. Vice President (1965–69), b. Wallace, S.Dak. After practicing pharmacy for several years, Humphrey taught political science and became involved in state pol...

Maupassant, Guy de

(Encyclopedia)Maupassant, Guy de gē də mōpäsäNˈ [key], 1850–93, French novelist and short-story writer, of an ancient Norman family. He worked in a government office at Paris and became known c.1880 as the ...

Bloom, Harold

(Encyclopedia)Bloom, Harold, 1930–2019, American literary critic and scholar, b. The Bronx, N.Y., Ph.D. Yale (1955). The son of Orthodox Jewish immigrants from Russia, he was Sterling Professor of Humanities at Y...

rare-earth metals

(Encyclopedia)rare-earth metals, in chemistry, group of metals including those of the lanthanide series and actinide series and usually yttrium, sometimes scandium and thorium, and rarely zirconium. Promethium, whi...

symbolists

(Encyclopedia)symbolists, in literature, a school originating in France toward the end of the 19th cent. in reaction to the naturalism and realism of the period. Designed to convey impressions by suggestion rather ...

celestial mechanics

(Encyclopedia)celestial mechanics, the study of the motions of astronomical bodies as they move under the influence of their mutual gravitation. Celestial mechanics analyzes the orbital motions of planets, dwarf pl...

epistemology

(Encyclopedia)epistemology ĭpĭsˌtəmŏlˈəjē [key] [Gr.,=knowledge or science], the branch of philosophy that is directed toward theories of the sources, nature, and limits of knowledge. Since the 17th cent. e...

Comanche

(Encyclopedia)Comanche kəmănˈchē [key], Native North Americans belonging to the Shoshonean group of the Uto-Aztecan branch of the Aztec-Tanoan linguistic stock (see Native American languages). They originated f...

infinity

(Encyclopedia)infinity, in mathematics, that which is not finite; it is often indicated by the symbol ∞. A sequence of numbers, a1, a2, a3, … , is said to “approach infinity” if the numbers eventually b...

Mühlenberg, Heinrich Melchior

(Encyclopedia)Mühlenberg, Heinrich Melchior myo͞oˈlənbûrg [key], 1746–1807, American clergyman, Revolutionary officer, and legislator, eldest son of Heinrich, was born in Trappe, Pa., and studied at Halle. A...