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Espinel, Vicente Martínez

(Encyclopedia)Espinel, Vicente Martínez vēthānˈtā märtēˈnāth āspēnĕlˈ [key], 1550–1624, Spanish writer, musician, and adventurer. Espinel was notorious for his dissolute life, which his holy vows, ta...

correspondence principle

(Encyclopedia)correspondence principle, physical principle, enunciated by Niels Bohr in 1923, according to which the predictions of the quantum theory must correspond to the predictions of the classical theories of...

Fisher, Irving

(Encyclopedia)Fisher, Irving, 1867–1947, American economist, b. Saugerties, N.Y., Ph.D. Yale, 1891. He began teaching at Yale in 1890 and was active there until 1935. His earliest work was in mathematics, and he ...

Nash, John Forbes, Jr.

(Encyclopedia)Nash, John Forbes, Jr., 1928–2015, American mathematician, b. Bluefield, W.Va., grad. Carnegie Institute of Technology (now Carnegie-Mellon Univ., B.A. and M.A. 1948), Ph.D. Princeton 1950. During a...

koto

(Encyclopedia)koto kōˈtō [key], a Japanese string instrument related in structure to the zither. It consists of an elongated rectangular wooden body, strung lengthwise with 7 to 13 silk strings. The uniformly lo...

Kirchner, Leon

(Encyclopedia)Kirchner, Leon, 1919–2009, American composer, b. Brooklyn, N.Y. Kirchner studied at the Univ. of California, Berkeley, with Ernest Bloch, Arnold Schoenberg, and Roger Sessions. Although he used many...

double bass

(Encyclopedia)double bass, bowed stringed musical instrument, the contrabass of the modern orchestral string section. It originated as a double-bass viol, an instrument described as early as 1566. A true double-bas...

Chávez, Carlos

(Encyclopedia)Chávez, Carlos kärˈlōs shäˈvās [key], 1899–1975, Mexican composer and conductor. In 1928, Chávez established the Symphony Orchestra of Mexico, which he conducted until 1949. He was also dire...

Scruggs, Earl Eugene

(Encyclopedia)Scruggs, Earl Eugene, 1924–2012, American banjo player, b. Flint Hill, N.C. He developed a distinctive syncopated, three-finger style on the five-string banjo that changed the way it is played. From...

Catskill Mountains

(Encyclopedia)Catskill Mountains, dissected plateau of the Appalachian Mt. system, SE N.Y., W of the Hudson River. This glaciated region, wooded and rolling, with deep gorges and many waterfalls, is drained by the ...