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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...

Nabokov, Vladimir

(Encyclopedia)Nabokov, Vladimir vlädēˈmĭr näbôˈkŏf [key], 1899–1977, Russian-American author, b. St. Petersburg, Russia. He emigrated to England after the Russian Revolution of 1917 and graduated from Cam...

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...

chronicle

(Encyclopedia)chronicle, official record of events, set down in order of occurrence, important to the people of a nation, state, or city. Almanacs, The Congressional Record in the United States, and the Annual Regi...

go

(Encyclopedia)go or i-go, a board game popular in Japan that probably originated in China or India as long ago as the third millennium b.c. The board is marked by a grid of 19 horizontal and 19 vertical lines to fo...

Gibson, William

(Encyclopedia)Gibson, William, 1948–, Canadian science fiction writer, b. Conway, S.C., moved to Canada in the 1960s. He first published short stories in sci-fi magazines; many are collected in Burning Chrome (19...