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integrated circuit
integrated circuit (IC), electronic circuit built on a semiconductor substrate, usually one of single-crystal silicon. The circuit, often called a chip, is packaged in a hermetically sealed case or a nonhermetic plastic capsule, with leads extending from it for input, output, and power-supply con...
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Horsehead Nebula
Horsehead Nebula dark nebula located in the constellation Orion; designated IC 434 or B 33. It consists of a cloud of nonluminous interstellar matter resembling the outline of a horse's head and appears against the background of a bright emission nebula. The Horsehead Nebula measures about 4 mi...
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Gang of Four
Gang of Four term of opprobrium given by the Chinese Communist authorities to four persons held responsible for the excesses of the Cultural Revolution (1966-69). They were also accused of trying to seize power after the deaths (1976) of Mao Zedong and Zhou Enlai . The most notable of the Gang...
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Ganges
Ganges or Ganga , river, c.1,560 mi (2,510 km) long, rising in the Gangotri glacier in the Himalayas in Uttaranchal state, India, and flowing generally southeast through NE India across a vast plain to the Bay of Bengal in Bangladesh; the most sacred river of Hindu India. The fertile Ganges plai...
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Hip-Hop Culture
HIP-HOP CULTURE
Background
During the late 1970s an underground urban movement known as "hip-hop" began to develop in the South Bronx area of New York City. Encompassing graffiti art, break dancing, rap music, and fashion, hip-hop became the dominant cultural movement of the African American and H...
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New General Catalog
New General Catalog (NGC), standard reference list of nebulae (see nebula ). It is based on the General Catalog, published in 1864, which included 2,500 nebulae cataloged by William Herschel and an additional 2,500 cataloged by his son, John Herschel. The General Catalog was combined with work of ...
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bushrangers
bushrangers bandits who terrorized the bush country of Australia in the 19th cent. The first bushrangers (c.1806-44) were mainly escaped convicts who fled to the bush and organized gangs. Their crimes were checked effectively by various Bushranging Acts passed after 1830. With the discovery of gold...
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Corsica
Corsica , Fr. Corse, island (1990 pop. 251,000), 3,352 sq mi (8,682 sq km), a region of metropolitan France, SE of France and N of Sardinia, in the Mediterranean Sea. Ajaccio , the capital, and Bastia are the chief towns and ports. The island is largely mountainous, culminating in Monte Cinto (...
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ethnography
eth·nog·ra·phy
/ e[unvoicedth]ˈnägrəfē/
•
n.
the scientific description of the customs of individual peoples and cultures.
DERIVATIVES:
eth·nog·ra·pher
/ -fər/ n.
eth·no·graph·ic
/ &#x...
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Yamuna
Yamuna or Jumna , river, c.850 mi (1,370 km) long, rising in the Himalayas, N India, and flowing generally SE, through the Shiwalik Range, past Delhi, to the Ganges River at Allahabad, Uttar Pradesh state; the Chambal and Betwa rivers are its main tributaries. The Yamuna's confluence with the Ga...
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