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Sarraut, Albert Pierre

(Encyclopedia)Sarraut, Albert Pierre älbĕrˈ pyĕr särōˈ [key], 1872–1962, French leader, a Radical Socialist. A member of the chamber of deputies from 1902, he was governor-general (1911–14, 1916–19) of...

Pike, James Albert

(Encyclopedia)Pike, James Albert, 1913–69, American Episcopal bishop, b. Oklahoma City. A lawyer who had been raised as a Roman Catholic, he served (1943–45) in the U.S. navy and then studied for the Episcopal ...

Sims, Christopher Albert

(Encyclopedia)Sims, Christopher Albert, 1942–, American economist, b. Washington, D.C., Ph.D. Harvard (1968). Sims has taught at Harvard (1967–70), the Univ. of Minnesota (1970–90), Yale (1990–99), and Prin...

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...

Planck, Max

(Encyclopedia)Planck, Max mäks plängk [key], 1858–1947, German physicist. Seeking to explain the experimental spectrum (distribution of electromagnetic energy according to wavelength) of blackbody radiation, he...

Epstein, Sir Jacob

(Encyclopedia)Epstein, Sir Jacob ĕpˈstīn [key], 1880–1959, sculptor, b. New York City. He studied with Rodin in Paris and later worked chiefly in England. In revolt against the ornate and the pretty in art, Ep...

Sitter, Willem de

(Encyclopedia)Sitter, Willem de vĭlˈəm də sĭtˈər [key], 1872–1934, Dutch astronomer and mathematician. He was professor from 1908 at the Univ. of Leiden and in 1919 became director of its observatory. His ...

Ulm

(Encyclopedia)Ulm o͝olm [key], city (1994 pop. 114,839), Baden-Württemberg, S Germany, on the Danube (Donau) River. It is an active river port, rail junction, and industrial center. Manufactures include motor veh...

Levi-Civita, Tullio

(Encyclopedia)Levi-Civita, Tullio to͞olˈlyō lāˈvē-chēˈvētä [key], 1873–1942, Italian mathematician. He taught at the universities of Padua (1898–1919) and Rome (1919–38) and was noted for his resear...

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