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Huygens, Christiaan

(Encyclopedia)Huygens, Christiaan krĭsˈtyän hoiˈgəns [key], 1629–95, Dutch mathematician and physicist; son of Constantijn Huygens. He improved telescopic lenses and discovered (1655) a satellite of Saturn a...

Hägerstrom, Axel

(Encyclopedia)Hägerstrom, Axel äkˈsəl hägˈərstrôm [key], 1868–1939, Swedish philosopher. He was a student (1886–93) at Uppsala Univ. and taught there from 1893 until his retirement in 1933. The son of a...

McKenna, Joseph

(Encyclopedia)McKenna, Joseph, 1843–1926, American jurist, associate justice of the U.S. Supreme Court (1898–1925), b. Philadelphia. Admitted to the bar in 1865, he practiced law in California and served in the...

mah jongg

(Encyclopedia)mah jongg mä jông [key], four-handed game, probably of Chinese origin, popular in the United States. It is played in many variations throughout China. In 1920, Joseph P. Babcock, an American travele...

Wilkins, Roy

(Encyclopedia)Wilkins, Roy, 1901–81, American social reformer and civil-rights leader, b. St. Louis, Mo.; grad. Univ. of Minnesota (B.A., 1923). While a student, Wilkins served as secretary of the local chapter o...

teleportation, in science fiction

(Encyclopedia)teleportation, in science fiction, the process of instantaneously transporting a person or an object between two points, usually by disappearing from one place and reappearing at a second place as a p...

Tordesillas, Treaty of

(Encyclopedia)Tordesillas, Treaty of tōrˌᵺāsēˈlyäs [key], 1494, agreement signed at Tordesillas, Spain, by which Spain and Portugal divided the non-Christian world into two zones of influence. In principle ...

Becher, Johannes Robert

(Encyclopedia)Becher, Johannes Robert yōhänˈəs rōˈbĕrt bĕkhˈər [key], 1891–1958, German poet and essayist. After an early association with the Expressionist movement, Becher turned to Communism. His ant...

integrated circuit

(Encyclopedia)integrated circuit (IC), electronic circuit built on a semiconductor substrate, usually one of single-crystal silicon. The circuit, often called a chip, is packaged in a hermetically sealed case or a ...

Shakers

(Encyclopedia)Shakers, popular name for members of the United Society of Believers in Christ's Second Appearing, also called the Millennial Church. Members of the movement, who received their name from the tremblin...