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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…

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…

Polaris

(Encyclopedia) PolarisPolarispōlârˈĭs [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…

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)…

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…

The History of the Internet

From a simple 300-mile transmission to a global network in cyberspace by Ricco Villanueva Siasoco   The Internet is over 40 years old. Related Links Internet Quiz Internet…

Hereward the Wake

(Encyclopedia) Hereward the WakeHereward the Wakehĕrˈĭwərd [key], fl. 1070, Anglo-Saxon rebel against William I. A thane, he apparently held land in Lincolnshire. In 1070 he sacked Peterborough with…

Edmond

(Encyclopedia) Edmond, city (2020 pop. 94,428), Oklahoma co., central Okla.; settled 1889. It is a trading center with a huge oil field and small…

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…

Boyle, Kay

(Encyclopedia) Boyle, Kay, 1903–93, American writer, b. St. Paul, Minn. A European expatriate in the interwar years, she returned to Europe as a correspondent for the New Yorker (1946–53) and…