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gyroscope

(Encyclopedia)CE5 Three-frame gyroscope gyroscope jīˈrəskōpˌ [key], symmetrical mass, usually a wheel, mounted so that it can spin about an axis in any direction. When spinning, the gyroscope has special p...

boulder, in geology

(Encyclopedia)boulder, large rock fragment formed by detachment from its parent consolidated rock by weathering and erosion. In engineering and geology, especially in the United States, the term is applied to loose...

Lexington

(Encyclopedia)Lexington. 1 City (1990 pop. 225,366), seat of Fayette co., N central Ky., in the heart of the bluegrass region; inc. 1832, made coextensive with Fayette co. 1974. The outstanding center in the United...

faience

(Encyclopedia)faience fāĕnsˈ, –änsˈ, fī– [key] [for Faenza, Italy], any of several kinds of pottery, especially earthenware made of coarse clay and covered with an opaque tin-oxide glaze. The term is part...

Kakutani, Shizuo

(Encyclopedia)Kakutani, Shizuo, 1911–2004, Japanese mathematician, b. Osaka, Japan, grad. Tohoko Univ, Ph.D. Princeton, 1941. Kakutani repatriated to Japan during World War II, but returned to Princeton in 1948 a...

Harding, Chester

(Encyclopedia)Harding, Chester, 1792–1866, American portrait painter, b. Conway, Mass. He worked as an itinerant portrait painter long enough to enable him to study at the Pennsylvania Academy of Design. Later he...

pipestone

(Encyclopedia)pipestone, hard, dull red or mottled pink-and-white clay stone, carved by Native Americans into pipes. Called calumets (see calumet) the pipes were used extensively in ceremonials. Native Americans he...

Ray, John

(Encyclopedia)Ray or Wray, John, 1627–1705, English naturalist. He was extremely influential in laying the foundations of systematic biology. With his pupil Francis Willughby, he planned a complete classification...

Budge, Don

(Encyclopedia)Budge, Don (John Donald Budge), 1915–2000, American tennis player, b. Oakland, Calif. A powerful, consistent player, Budge was the first person to capture the sport's grand slam, winning the Austral...

Geological Survey, United States

(Encyclopedia)Geological Survey, United States, bureau organized in 1879 under the Dept. of the Interior to unify and centralize the work already undertaken by separate surveys under Clarence King, F. V. Hayden, Ge...