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ocean

(Encyclopedia)ocean, interconnected mass of saltwater covering 70.78% of the surface of the earth, often called the world ocean. It is subdivided into four (or five) major units that are separated from each other i...

Dickinson, Edwin Walter

(Encyclopedia)Dickinson, Edwin Walter, 1891–1978, American painter, b. Seneca Falls, N.Y. He studied in New York City with William Merritt Chase, and spent most of his life on Cape Cod. Working during the moderni...

cramp

(Encyclopedia)cramp, painful uncontrollable contraction of a muscle or group of muscles. The type that results from cold, strain, or disturbance of circulation (as experienced by swimmers) is eased by massage and t...

Fiedler, Arthur

(Encyclopedia)Fiedler, Arthur, 1894–1979, American conductor, b. Brookline, Mass. Fiedler, who ultimately became a grandfatherly American musical icon, studied violin with his father, a member of the Boston Symph...

Hansen, James Edward

(Encyclopedia)Hansen, James Edward, 1941–, American astrophysicist and climatologist, b. Denison, Iowa, Ph.D. Univ. of Iowa, 1967. In 1967 he joined the Goddard Institute for Space Studies, and served as director...

Georgetown, cities, United States

(Encyclopedia)Georgetown. 1 Town (2020 pop. 37,086), Scott co., N central Ky., in the bluegrass country; settled 1776, inc. 1790. In a rich agricultural, ...

Jansky, Karl Guthe

(Encyclopedia)Jansky, Karl Guthe, 1905–50, American radio engineer; b. Norman, Okla. After graduating (1927) from the Univ. of Wisconson, he joined the Bell Telephone Laboratories. While trying to determine the c...

jatropha

(Encyclopedia)jatropha jăˈtrəfə [key], any plant of a widely distributed genus (Japtropha) of perennial herbs, shrubs, and trees in the family Euphorbiaceae (spurge family), native to tropical areas of the West...

Parks, Gordon

(Encyclopedia)Parks, Gordon (Gordon Roger Alexander Buchanan Parks), 1912–2006, African-American photographer, filmmaker, writer, and composer, b. Fort Scott, Kans. Parks purchased his first camera in 1938 and be...

Orbiting Astronomical Observatory

(Encyclopedia)Orbiting Astronomical Observatory (OAO), series of four orbiting observatories (see observatory, orbiting) launched between 1966 and 1972 by the National Aeronautics and Space Administration (NASA) to...