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San Francisco Symphony

(Encyclopedia)San Francisco Symphony, orchestra founded 1911. It has performed at the Louise M. Davies Symphony Hall since 1980. Henry Hadley, the original music director, was followed by Alfred Hertz (1915–30), ...

White Horse, Vale of the

(Encyclopedia)White Horse, Vale of the, district (1991 pop. 109,200), Oxfordshire, S central England. The vale is the valley of the Ock River. Abingdon is the administrative seat. Surgical instruments and automobil...

relativity

(Encyclopedia)relativity, physical theory, introduced by Albert Einstein, that discards the concept of absolute motion and instead treats only relative motion between two systems or frames of reference. One consequ...

light

(Encyclopedia)light, visible electromagnetic radiation. Of the entire electromagnetic spectrum, the human eye is sensitive to only a tiny part, the part that is called light. The wavelengths of visible light range ...

Anglo-Saxon literature

(Encyclopedia)Anglo-Saxon literature, the literary writings in Old English (see English language), composed between c.650 and c.1100. See also English literature. Old English literary prose dates from the latter ...

Langer, Susanne Knauth

(Encyclopedia)Langer, Susanne Knauth nouth lăngˈər [key], 1895–1986, American philosopher, b. New York City, grad. Radcliffe (B.A., 1920; Ph.D., 1926). After holding various teaching posts, she was a lecturer ...

Moltke, Helmuth Johannes Ludwig, Graf von

(Encyclopedia)Moltke, Helmuth Johannes Ludwig, Graf von hĕlˈmo͞ot yōhäˈnəs lo͞otˈvĭkh gräf fən môltˈkə [key], 1848–1916, German army officer. He fought in the Franco-Prussian War (1870–71) and be...

Lewis, Clarence Irving

(Encyclopedia)Lewis, Clarence Irving, 1883–1964, American philosopher, b. Stoneham, Mass., grad. Harvard (B.A., 1906; Ph.D., 1910). After teaching (1911–20) at the Univ. of California, he was professor of philo...

Green, Thomas Hill

(Encyclopedia)Green, Thomas Hill, 1836–82, English idealist philosopher. Educated at Oxford, he was associated with the university all his life. He was professor of moral philosophy there from 1878 until his deat...

Grace, princess consort of Monaco

(Encyclopedia)Grace, 1929–82, princess consort of Monaco, b. Philadelphia as Grace Patricia Kelly. She acted on stage and television in New York, and made her film debut in 1951. Cool, blonde, and patrician, she ...