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ultraviolet radiation
(Encyclopedia)ultraviolet radiation, invisible electromagnetic radiation between visible violet light and X rays; it ranges in wavelength from about 400 to 4 nanometers and in frequency from about 1015 to 1017 hert...counterfeiting
(Encyclopedia)counterfeiting, manufacturing spurious coins, paper money, or evidences of governmental obligation (e.g., bonds) in the semblance of the true. There must be sufficient resemblance to the genuine artic...Ensor, James Ensor, Baron
(Encyclopedia)Ensor, James Ensor, Baron jĕms äNsôrˈ [key], 1860–1949, Belgian painter and etcher. Ensor's imagery reflected one of the most bizarre and powerful visions of his era. He left his native Ostend t...Titian
(Encyclopedia)Titian tĭshˈən [key], c.1490–1576, Venetian painter, whose name was Tiziano Vecellio, b. Pieve di Cadore in the Dolomites. Of the very first rank among the artists of the Renaissance, Titian was ...Roman art
(Encyclopedia)Roman art, works of art produced in ancient Rome and its far-flung provinces. The continued striving after three-dimensional illusionist effects revealed in the various phases of painting was dup...copperhead
(Encyclopedia)copperhead, poisonous snake, Ancistrodon contortrix, of the E United States. Like its close relative, the water moccasin, the copperhead is a member of the pit viper family and detects its warm-bloode...Helmholtz, Hermann Ludwig Ferdinand von
(Encyclopedia)Helmholtz, Hermann Ludwig Ferdinand von hĕrˈmän lo͞otˈvĭkh fĕrˈdēnänt fən hĕlmˈhôlts [key], 1821–94, German scientist. Although known especially as a physicist and biologist, he was al...harrier, breed of dog
(Encyclopedia)harrier, breed of medium-sized hound whose origin is obscure but whose existence in England dates from the 13th cent. It stands from 19 to 21 in. (48.3–53.3 cm) high at the shoulder and weighs from ...Girl Scouts
(Encyclopedia)Girl Scouts, recreational and service organization founded (1912) in Savannah, Ga., by Juliette Gordon Low. It was originally modeled after the Boy Scouts (see Scouts) and Girl Guides, organizations c...indigo
(Encyclopedia)indigo [Span.; from Lat.,=Indian], important blue dyestuff used in printing inks and for vat dyeing of cotton (see dye). It was anciently produced in India and was known in Egypt, probably c.1600 b.c....Browse by Subject
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