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Bradwardine, Thomas

(Encyclopedia)Bradwardine, Thomas brădˈwərdēn [key], c.1295–1349, English mathematician, natural philosopher, and theologian. He was chaplain to Edward III (c.1338) and later archbishop of Canterbury. As a ma...

Malcolm III

(Encyclopedia)Malcolm III (Malcolm Canmore), d. 1093, king of Scotland (1057–93), son of Duncan I; successor to Macbeth (d. 1057). It took him some years after Macbeth's death to regain the boundaries of his fath...

Roche limit

(Encyclopedia)Roche limit, the closest distance that a celestial body held together only by its own gravity can come to a planet without being pulled apart by the planet's tidal (gravitational) force. This distance...

Davis, Sammy, Jr.

(Encyclopedia) Davis, Sammy, Jr. (Samuel George), 1925-1990, American entertainer, b. Harlem, New York City, N.Y. Both of Davis’s parents were dancers who performe...

executive

(Encyclopedia)executive, one who carries out the will or plan of another person or of a group. In government, the term refers not only to the chief administrative officer but to all others who execute the laws and ...

Polaris

(Encyclopedia)Polaris pōlârˈĭs [key] or North Star, star nearest the north celestial pole (see equatorial coordinate system). It is in the constellation Ursa Minor (see Ursa Major and Ursa Minor; Bayer designat...

electromotive series

(Encyclopedia)electromotive series, list of metals whose order indicates the relative tendency to be oxidized, or to give up electrons (see oxidation and reduction); the list also includes the gas hydrogen. The ele...

wave, in physics

(Encyclopedia)wave, in physics, the transfer of energy by the regular vibration, or oscillatory motion, either of some material medium or by the variation in magnitude of the field vectors of an electromagnetic fie...

era of good feelings

(Encyclopedia)era of good feelings, period in U.S. history (1817–23) when, the Federalist party having declined, there was little open party feeling. After the War of 1812 all sections were anxious to return to a...

Hereward the Wake

(Encyclopedia)Hereward the Wake hĕrˈĭwərd [key], fl. 1070, Anglo-Saxon rebel against William I. A thane, he apparently held land in Lincolnshire. In 1070 he sacked Peterborough with the aid of a Danish fleet an...