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center of mass

(Encyclopedia)center of mass, the point at which all the mass of a body may be considered to be concentrated in analyzing its motion. The center of mass of a sphere of uniform density coincides with the center of t...

triforium

(Encyclopedia)triforium trīfôrˈēəm [key], in church architecture, an arcaded gallery above the arches of the nave. In the interiors of medieval churches each bay of the nave wall customarily had three division...

Soane, Sir John

(Encyclopedia)Soane, Sir John sōn [key], 1753–1837, English architect. After studying with George Dance, the younger, Soane won a fellowship to Rome. He toured Italy and returned in 1780 to begin his practice in...

Young Men's Christian Association

(Encyclopedia)Young Men's Christian Association, (the Y or YMCA), organization having as its objective the development of values and behaviors that are consistent with Christian principles. Despite its name, member...

Riemann, Bernhard

(Encyclopedia)Riemann, Bernhard (Georg Friedrich Bernhard Riemann) gāˈôrk frēˈdrĭkh bĕrnˈhärt rēˈmän [key], 1826–66, German mathematician. He studied at the universities of Göttingen and Berlin and w...

supercomputer

(Encyclopedia)supercomputer, a state-of-the-art, extremely powerful computer capable of manipulating massive amounts of data in a relatively short time. Supercomputers are very expensive and are employed for specia...

Sonora

(Encyclopedia)Sonora sōnōˈrä [key], state (1990 pop. 1,823,606), 70,484 sq mi (182,554 sq km), NW Mexico, on the Gulf of California, S of Arizona. Hermosillo is the capital. Sonora is mostly mountainous, with v...

relocation center

(Encyclopedia)relocation center, in U.S. history, camp in which Japanese and Japanese-Americans were interned during World War II. Fearing a Japanese invasion, the military leaders, under authority of an executive ...

Barnes, Julian Patrick

(Encyclopedia)Barnes, Julian Patrick, English author, 1946–. During the 1970s and 80s he was a critic and editor for the New Statesman and New Review, a correspondent for The New Yorker, and a writer and editor f...

Douhet, Giulio

(Encyclopedia)Douhet, Giulio jo͞oˈlyō do͞oāˈ [key], 1869–1930, Italian military officer and early advocate of airpower. He was an early supporter of strategic bombing and the military superiority of air for...