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inclined plane

(Encyclopedia)CE5 Inclined plane inclined plane, simple machine, consisting of a sloping surface, whose purpose is to reduce the force that must be applied to raise a load. To raise a body vertically a force mu...

Comnenus

(Encyclopedia)Comnenus kŏmnēˈnəs [key], family name of several Byzantine emperors—Isaac I, Alexius I, John II, Manuel I, Alexius II, and Andronicus I—who reigned in the 11th and 12th cent., and of the histo...

Joplin

(Encyclopedia)Joplin jŏpˈlĭn [key], city (1990 pop. 40,961), Jasper and Newton counties, SW Mo., at the edge of the Ozarks; settled c.1839, inc. 1873. It is a railroad center, the shipping and processing point o...

Picard, Jean

(Encyclopedia)Picard, Jean, 1620–82, French astronomer, noted for having made the first accurate measurement of a degree of the earth's meridian. The figures he established were of great value to Newton in his ca...

Abraham

(Encyclopedia)Abraham [according to the Book of Genesis, Heb.,=father of many nations] or Abram āˈbrəm [key] [Heb.,=exalted father], in the Bible, progenitor of the Hebrews; in the Qur'an, ancestor of the Arabs....

D'Ewes, Sir Simonds

(Encyclopedia)D'Ewes, Sir Simonds dyo͞oz [key], 1602–50, English antiquarian, b. Coxden. He collected many old manuscripts and made transcriptions of others with the intention of writing a history of England; th...

Dilke, Sir Charles Wentworth

(Encyclopedia)Dilke, Sir Charles Wentworth dĭlk [key], 1843–1911, British statesman. A radical leader in the Liberal party, he helped pass the parliamentary Reform Acts of 1884–85 as well as laws giving the mu...

Alma-Tadema, Sir Lawrence

(Encyclopedia)Alma-Tadema, Sir Lawrence ălˈmə-tădˈĭmə [key], 1836–1912, English painter, b. Friesland. He studied in Belgium, where he lived until 1869. In that year he went to England; there he became a c...

Dyck, Sir Anthony van

(Encyclopedia)Dyck, Sir Anthony van: see Van Dyck, Sir Anthony. ...

Dyson, Sir Frank Watson

(Encyclopedia)Dyson, Sir Frank Watson dīˈsən [key], 1868–1939, English astronomer, b. Ashby-de-la-Zouch, grad. Cambridge. He was astronomer royal of Scotland (1905–10) and of England (from 1910). As director...