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dipole

(Encyclopedia)dipole: see pole, in electricity and magnetism. ...

Peary, Robert Edwin

(Encyclopedia)Peary, Robert Edwin pērˈē [key], 1856–1920, American arctic explorer, b. Cresson, Pa. In 1881 he entered the U.S. navy as a civil engineer and for several years served in Nicaragua, where he was ...

Uruguay , river, South America

(Encyclopedia)Uruguay yo͝oˈrəgwā, gwī, Span. o͞oro͞ogwiˈ, o͞oro͞owīˈ [key], river, c.1,000 mi (1,610 km) long, rising in S Brazil and flowing in an arc W, SW, and S to the Río de la Plata, an estuary; ...

Balchen, Bernt

(Encyclopedia)Balchen, Bernt bârnt bälˈkən [key], 1899–1973, Norwegian-American aviator. He headed one of the search expeditions for Amundsen and Ellsworth in 1925 and was a member of their 1926 expedition to...

Henson, Matthew Alexander

(Encyclopedia)Henson, Matthew Alexander, 1866–1965, African-American arctic explorer, b. Charles County, Md. He accompanied Robert E. Peary as personal assistant, dog driver, and interpreter on numerous expeditio...

Gill, Sir David

(Encyclopedia)Gill, Sir David gĭl [key], 1843–1914, Scottish astronomer, educated at the Univ. of Aberdeen. He made observations of the transits of Venus and Mars and investigated the solar parallax. As astronom...

neutrino astronomy

(Encyclopedia)neutrino astronomy, study of stars by means of their emission of neutrinos, fundamental particles that result from nuclear reactions and are emitted by stars along with light. Approximately 100 billio...

Crux

(Encyclopedia)Crux kro͝oks [key] [Lat.,=cross], small but brilliant southern constellation whose four most prominent members form a Latin cross, the famous Southern Cross. The long arm of the cross, terminating in...

El Dorado, legendary country of South America

(Encyclopedia)El Dorado ĕlˈdəräˈdō, –rāˈ– [key] [Span.,=the gilded man], legendary country of the Golden Man sought by adventurers in South America. The legend supposedly originated in a custom of the C...

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