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radio frequency

(Encyclopedia)radio frequency, range of electromagnetic waves with a frequency or wavelength suitable for communication uses. Some of these waves serve as carriers of the lower-frequency audio waves; others are mod...

Organization for Security and Cooperation in Europe

(Encyclopedia)Organization for Security and Cooperation in Europe (OSCE), international organization established as the Conference on Security and Cooperation in Europe (CSCE) in 1973, during the cold war, to promo...

Four-H

(Encyclopedia)Four-H or 4-H, organization for boys and girls, generally from 8 to 18 years of age; some states offer programs for younger children, and there are also collegiate programs. 4-H teaches young people l...

Holy Alliance

(Encyclopedia)Holy Alliance, 1815, agreement among the emperors of Russia and Austria and the king of Prussia, signed on Sept. 26. It was quite distinct from the Quadruple Alliance (Quintuple, after the admission o...

Group of Seven

(Encyclopedia)Group of Seven (G7), international organization officially established in 1985 to facilitate economic and commercial cooperation among the world's largest industrial nations, including efforts to aid ...

Guggenheim

(Encyclopedia)Guggenheim go͝ogˈənhīm [key], family of American industrialists and philanthropists. Meyer Guggenheim, 1828–1905, b. Aargau canton, Switzerland, emigrated (1847) to the United States, prospered ...

Briand, Aristide

(Encyclopedia)Briand, Aristide ärēstēdˈ brēäNˈ [key], 1862–1932, French statesman. A lawyer and a Socialist, he entered (1902) the chamber of deputies and helped to draft and pass the law (1905) for separa...

Welles, Sumner

(Encyclopedia)Welles, Sumner, 1892–1961, American diplomat, b. New York City. Welles began his diplomatic career as secretary of the U.S. embassy at Tokyo (1915–17). Attached to the embassy at Buenos Aires (191...

Koolhaas, Rem

(Encyclopedia)Koolhaas, Rem (Remmet Lucas Koolhaas), 1944–, Dutch architect, b. Rotterdam. He began his career as a journalist and screenwriter, moving to London in the late 1960s to study architecture. Koolhaas ...

Temple, Sir William

(Encyclopedia)Temple, Sir William, 1628–99, English diplomat and author. He was married in 1655 to Dorothy Osborne. They settled in Ireland, and in 1661 Temple entered the Irish parliament. He moved (1663) to Eng...