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Bergius, Friedrich Karl Rudolf

(Encyclopedia)Bergius, Friedrich Karl Rudolf, 1884–1949, German chemist, Ph.D. Univ. of Leipzig, 1907. In 1910, Bergius set up a laboratory to carry out his research and in 1914 transferred the operation to the E...

Waite, Morrison Remick

(Encyclopedia)Waite, Morrison Remick wāt [key], 1816–88, American jurist, 7th chief justice of the U.S. Supreme Court (1874–88), b. Lyme, Conn. Admitted to the bar in 1839, he became prominent when he represen...

Blackburn, Elizabeth Helen

(Encyclopedia)Blackburn, Elizabeth Helen, 1948–, Australian-American molecular biologist, b. Hobart, Tasmania, Australia, Ph.D. Cambridge, 1975. Blackburn was a professor at the Univ. of California, Berkeley, fro...

Blau, Joseph Leon

(Encyclopedia)Blau, Joseph Leon blou [key] 1909–86, American Jewish scholar and educator, b. Brooklyn, N.Y., grad. Columbia (A.B., 1931; M.A., 1933; Ph.D., 1945). He taught at Columbia from 1944, becoming profess...

conservation laws

(Encyclopedia)conservation laws, in physics, basic laws that together determine which processes can or cannot occur in nature; each law maintains that the total value of the quantity governed by that law, e.g., mas...

platinum

(Encyclopedia)platinum plătˈənəm [key], metallic chemical element; symbol Pt; at. no. 78; at. wt. 195.084; m.p. 1,772℃; b.p. 3,827±100℃; sp. gr. 21.45 at 20℃; valence +2 or +4. Pure platinum is a malleab...

National Labor Relations Board

(Encyclopedia)National Labor Relations Board (NLRB), independent agency of the U.S. government created under the National Labor Relations Act of 1935 (Wagner Act), and amended by the acts of 1947 (Taft-Hartley Labo...

psychological test

(Encyclopedia)psychological test, any of a variety of testing procedures for measuring psychological traits and behavior, or for studying some specialized aspect of ability. Several forms of testing have arisen fro...

Katharine of Aragón

(Encyclopedia)Katharine of Aragón, 1485–1536, first queen consort of Henry VIII of England; daughter of Ferdinand II of Aragón and Isabella of Castile. In 1501 she was married to Arthur, eldest son of Henry VII...

Pizarro, Francisco

(Encyclopedia)Pizarro, Francisco pĭzäˈrō, Span. fränthēsˈkō pēthärˈrō [key], c.1476–1541, Spanish conquistador, conqueror of Peru. Born in Trujillo, he was an illegitimate son of a Spanish gentleman a...