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Brookhaven National Laboratory

(Encyclopedia)Brookhaven National Laboratory, scientific research center, at Upton (town of Brookhaven), Long Island, N.Y. It was founded in 1947 by Associated Universities, a management corporation sponsored by ni...

photoelectric effect

(Encyclopedia)photoelectric effect, emission of electrons by substances, especially metals, when light falls on their surfaces. The effect was discovered by H. R. Hertz in 1887. The failure of the classical theory ...

white dwarf

(Encyclopedia)white dwarf, in astronomy, a type of star that is abnormally faint for its white-hot temperature (see mass-luminosity relation). Typically, a white dwarf star has the mass of the sun and the radius of...

Dalmáu, Luis

(Encyclopedia)Dalmáu, Luis lo͞oēsˈ dälmouˈ [key], fl. 1428–60, Spanish painter, court painter to Alfonso of Aragon. His only undisputed work, Virgin with Councilors (Barcelona), shows the influence of Jan v...

Robbers, Herman

(Encyclopedia)Robbers, Herman hĕrˈmän rôˈbərs [key], 1868–1937, Dutch novelist. A representative of descriptive realism, he wrote De Roman van een Gezin (1909–10; tr. The Fortunes of a Household, 1924). ...

Knoxville

(Encyclopedia)Knoxville, city (1990 pop. 165,121), seat of Knox co., E Tenn., on the Tennessee River; inc. 1876. A port of entry, it is a trade and shipping center for a farm, bituminous-coal, and marble area. Its ...

Heijermans, Herman

(Encyclopedia)Heijermans, Herman hĕrˈmän hīˈərmäns [key], 1864–1924, Dutch dramatist. Much of his work treated life among the Dutch Jews. His dramas include Op Hoop van Zegen (1900, tr. The Good Hope, 1928...

Erpenius, Thomas

(Encyclopedia)Erpenius, Thomas ûrpēˈnēəs [key], 1584–1624, Dutch Orientalist, whose name in Dutch was Van Erpe. Erpenius was one of the most celebrated scholars of his day and wrote several grammars of Middl...

Dobson, William

(Encyclopedia)Dobson, William, 1610–46, English court painter. After the death of Van Dyck, Dobson was made court painter to Charles I and did some interesting court portraits. Some of his works are close to the ...

Ruysbroeck, John

(Encyclopedia)Ruysbroeck, John, Dutch Jan van Ruusbroec yän vän roisˈbro͞ok [key], 1293–1381, Roman Catholic mystic, b. Brabant (now in Belgium and the Netherlands). He was an Augustinian canon. In middle age...