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magnetron

(Encyclopedia)magnetron măgˈnĭtrŏnˌ [key], vacuum tube oscillator (see electron tube) that generates high-power electromagnetic signals in the microwave frequency range. Its operation is based on the combined ...

Schism of East and West

(Encyclopedia)Schism of East and West, division between the Orthodox Eastern Church and the Roman Catholic Church. See Christianity; Ferrara-Florence, Council of; Leo IX, Saint; Lyons, Second Council of; papacy; Ph...

Scottish Gaelic language and literature

(Encyclopedia)Scottish Gaelic language and literature: see Celtic languages; Gaelic literature. ...

Hereford, town and district, England

(Encyclopedia)Hereford hĕrˈəfərd [key], town, Herefordshire, W central England. Hereford is a cattle-market ...

potential, electric

(Encyclopedia)potential, electric, work per unit of electric charge expended in moving a charged body from a reference point to any given point in an electric field (see electrostatics). The potential at the refere...

Common Weights and Measures (table)

(Encyclopedia)Common Weights and Measures Length Area Volume and Capacity (Liquid and Dry) Weight (Mass) ...

Ticino , river, Switzerland and Italy

(Encyclopedia)Ticino, Lat. Ticinus, river, 154 mi (248 km) long, rising in Ticino canton, S Switzerland, and flowing generally S through Lago Maggiore into N Italy, joining the Po River below Pavia. In Switzerland,...

Longview

(Encyclopedia)Longview. 1 City (1990 pop. 70,311), seat of Gregg co., E Tex.; inc. 1872. It is a manufacturing, business, and distribution center for the rich East Texas oil field. The city has oil and natural-gas ...

Kivu, lake, Congo and Rwanda

(Encyclopedia)Kivu, lake, 1,042 sq mi (2,699 sq km), 55 mi (89 km) long, on the Congo-Rwanda border, E central Africa; highest lake in Africa (4,788 ft/1,459 m). It is drained by the Ruzizi River, which flows S int...

electrostatics

(Encyclopedia)electrostatics, study of phenomena associated with charged bodies at rest (see charge; electricity). A charged body has an excess of positive or negative charges, a condition usually brought about by ...