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Davis, Raymond, Jr.

(Encyclopedia)Davis, Raymond, Jr., 1914–2006, American astrochemist, Ph.D. Yale Univ. 1942. Davis, who served in the Army Air Forces from 1942 to 1946, was a researcher at Monsanto Chemical Company (1946–48) an...

Sylvester II

(Encyclopedia)Sylvester II, c.945–1003, pope (999–1003), a Frenchman (b. Auvergne) named Gerbert; successor of Gregory V. In his youth he studied at Muslim schools in Spain and became learned in mathematics and...

Lerner, Alan Jay

(Encyclopedia)Lerner, Alan Jay, 1918–86, American lyricist and librettist, b. New York City. After two years as a radio scriptwriter, Lerner began an association with the composer Frederick Loewe that resulted in...

Marriner, Sir Neville

(Encyclopedia)Marriner, Sir Neville, 1924–2016, British conductor, b. Lincoln, England, grad. Royal College of Music, London (1946), studied Paris Conservatory. A violinist, he taught at the Royal College (1949�...

music hall

(Encyclopedia)music hall. In England, the Licensing Act of 1737 confined the production of legitimate plays to the two royal theaters—Drury Lane and Covent Garden; the demands for entertainment of the rising lowe...

Hertz, Heinrich Rudolf

(Encyclopedia)Hertz, Heinrich Rudolf hĕrts [key], 1857–94, German physicist. He confirmed J. C. Maxwell's electromagnetic theory and in the course of experiments (1886–89) produced and studied electromagnetic...

inductor

(Encyclopedia)inductor, electric device consisting of one or more turns of wire and typically having two terminals. An inductor is usually connected into a circuit in order to raise the inductance to a desired valu...

potentiometer

(Encyclopedia)potentiometer. 1 Manually adjustable, variable, electrical resistor. It has a resistance element that is attached to the circuit by three contacts, or terminals. The ends of the resistance element are...

Trudeau, Justin Pierre James

(Encyclopedia)Trudeau, Justin Pierre James tro͞odōˈ [key], 1971–, Canadian politician, b. Ottawa; grad. McGill Univ. (B.A., 1994), Univ. of British Columbia (B.Ed., 1998), son of Pierre Trudeau. He briefly tau...

Purcell, Edward Mills

(Encyclopedia)Purcell, Edward Mills, 1912–97, American physicist, b. Taylorville, Ill., Ph.D. Harvard, 1938. During World War II, Purcell was a researcher at the Massachusetts Institute of Technology Radiation La...