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compression

(Encyclopedia)compression, external stress applied to an object or substance, tending to cause a decrease in volume (see pressure). Gases can be compressed easily, solids and liquids to a very small degree if at al...

Cobden, Richard

(Encyclopedia)Cobden, Richard kŏbˈdən [key], 1804–65, British politician, a leading spokesman for the Manchester school. He made a fortune as a calico printer in Manchester. A firm believer in free trade, afte...

George I, king of Greece

(Encyclopedia)George I, 1845–1913, king of the Hellenes (1863–1913), second son of Christian IX of Denmark. After the deposition (1862) of Otto I, he was elected to succeed on the throne of Greece. Much more ef...

giant clam

(Encyclopedia)giant clam, common name for the largest bivalve mollusk in the world, Tridacna gigas, also known as the bear's paw clam. The giant clam may weigh over 500 lb (225 kg) and attain a length of over 4 ft ...

Préval, René Garcia

(Encyclopedia)Préval, René Garcia rənāˈ gärsēäˈ prāvälˈ [key] 1943–2017, Haitian political leader, president (1996–2001; 2006–11) of Haiti. Préval's family went into exile (1963) during the Duval...

Ostade, Adriaen van

(Encyclopedia)Ostade, Adriaen van äˈdrēän vän ôˈstädə [key], 1610–85, Dutch genre painter, b. Haarlem. Trained in the studio of Frans Hals, he was strongly influenced by his fellow student Adriaen Brouwe...

Baade, Walter

(Encyclopedia)Baade, Walter välˈtər bäˈdə [key], 1893–1960, German-born American astronomer. From 1919 to 1931 he was on the staff of the Hamburg observatory; from 1931 to 1958, at the Mt. Wilson observator...

jackrabbit

(Encyclopedia)jackrabbit, popular name for several hares of W North America, characterized by very long legs and ears. Jackrabbits are powerful jumpers and fast runners. In normal progress leaps are alternated with...

Jackson, Jesse Louis

(Encyclopedia)Jackson, Jesse Louis, 1941–, African-American political leader, clergyman, and civil-rights activist, b. Greenville, S.C. Raised in poverty, he attended the Chicago Theological Seminary (1963–65) ...

apsis

(Encyclopedia)CE5 Apsis points, or apsides, in the earth's orbit: At perihelion the earth is closest to the sun and at aphelion it is farthest from the sun. apsis (pl. apsides), point in the orbit of a body whe...