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Oldenburg, Claes

(Encyclopedia)Oldenburg, Claes klăs [key], 1929–, Swedish-American artist, b. Stockholm, raised Chicago, studied at Yale, moved to New York 1956. Usually considered part of the pop art movement, Oldenburg explor...

Ottonian art

(Encyclopedia)Ottonian art ŏtōˈnēən [key], art produced (c.900–1050) in the East Frankish kingdom of Germany known, after the emperors Otto (936–1002), as the Ottonian kingdom. Influenced by Byzantine and ...

hoe

(Encyclopedia)hoe, usually a flat blade, variously shaped, set in a long wooden handle and used primarily for weeding and for loosening the soil. It was the first distinctly agricultural implement. The earliest hoe...

horse latitudes

(Encyclopedia)horse latitudes, two belts of latitude where winds are light and the weather is hot and dry. They are located mostly over the oceans, at about 30° lat. in each hemisphere, and have a north-south rang...

incubator

(Encyclopedia)incubator, apparatus for the maintenance of controlled conditions in which eggs can be hatched artificially. Incubator houses with double walls of mud, a fireroom, and several compartments each holdin...

grosbeak

(Encyclopedia)grosbeak grōsˈbēk [key] [great beak], common name for various members of the family Fringillidae (finch family). Grosbeaks are characterized by their large conical bills. The male rose-breasted gro...

string theory

(Encyclopedia)string theory, description of elementary particles based on one-dimensional curves, or “strings,” instead of point particles. Superstring theory, which is string theory that contains a kind of sym...

spectroscope

(Encyclopedia)spectroscope, optical instrument for producing spectral lines and measuring their wavelengths and intensities, used in spectral analysis (see spectrum). When a material is heated to incandescence it e...

voltmeter

(Encyclopedia)voltmeter, instrument used to measure differences of electric potential, commonly called voltage, in volts or units that are multiples or fractions of volts. A voltmeter is usually combined with an am...

Carey, Mathew

(Encyclopedia)Carey, Mathew, 1760–1839, American publisher, bookseller, and economist, b. Dublin. In his Dublin journal he violently attacked English rule of Ireland, was imprisoned for a month, fled to France, w...