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noise pollution

(Encyclopedia)noise pollution, human-created noise harmful to health or welfare. Transportation vehicles are the worst offenders, with aircraft, railroad stock, trucks, buses, automobiles, and motorcycles all produ...

spiritual

(Encyclopedia)spiritual, a religious folk song of American origin, particularly associated with African-American Protestants of the southern United States. The African-American spiritual, characterized by syncopati...

music

(Encyclopedia)music. For information on types of music see such articles as absolute music; aleatory music; chamber music; church music; computer music; electronic music; jazz; program music; rock music; serial mus...

Chu Ta

(Encyclopedia)Chu Ta or Zhu Da both: jo͞o dä [key], c.1626–c.1705, Chinese painter and calligrapher, also known as Pa-ta-shan-jen or Bada Shanren. Said to have been a descendant of the imperial Ming family, he ...

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...

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...

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...

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...

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...

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...