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Washington, Denzel

(Encyclopedia) Washington, Denzel (Denzel Hayes Washington Jr.), 1954- , African-American actor, b. Mount Vernon, N.Y., Fordham Univ. (B.A., 1977). Washington’s fa...

Cassini

(Encyclopedia)Cassini käs-sēˈnē [key], name of a family of Italian-French astronomers, four generations of whom were directors of the Paris Observatory. Gian Domenico Cassini, 1625–1712, was born in Italy and...

Wovoka

(Encyclopedia)Wovoka wōvōˈkə [key], c.1858–1932, Paiute, prophet of a messianic religion sometimes called the Ghost Dance religion. Also known as Jack Wilson, he was influenced by his father (a mystic) as wel...

Struve

(Encyclopedia)Struve shtro͞oˈvə [key], family of astronomers. Friedrich Georg Wilhelm von Struve, 1793–1864, was born in Germany but later lived in Russia. While director (1817–39) of Dorpat Observatory he w...

sphinx

(Encyclopedia)sphinx sfĭngks [key], mythical beast of ancient Egypt, frequently symbolizing the pharaoh as an incarnation of the sun god Ra. The sphinx was represented in sculpture usually in a recumbent position ...

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...

Blackfoot

(Encyclopedia)Blackfoot, Native North Americans of the Algonquian branch of the Algonquian-Wakashan linguistic stock (see Native American languages). They occupied in the early 19th cent. a large range of territory...

bleaching

(Encyclopedia)bleaching, process of whitening by chemicals or by exposure to sun and air, commonly applied to textiles, paper pulp, wheat flour, petroleum products, oils and fats, straw, hair, feathers, and wood. C...

Turner, Joseph Mallord William

(Encyclopedia)Turner, Joseph Mallord William, 1775–1851, English landscape painter, b. London. Turner was the foremost English romantic painter and the most original of English landscape artists; in watercolor he...

cosmology

(Encyclopedia)cosmology, area of science that aims at a comprehensive theory of the structure and evolution of the entire physical universe. The earliest pre-Ptolemaic theories assumed that the earth was the cent...