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Ronaldo, Cristiano

(Encyclopedia)Ronaldo, Cristiano (Cristiano Ronaldo dos Santos Aveiro), 1985–, Portuguese soccer player. A forward, he began professional play in 2001 with Sporting Portugal. With Manchester United from 2003, he ...

Saroyan, William

(Encyclopedia)Saroyan, William səroiˈən [key], 1908–81, American author, b. Fresno, Calif. Of Armenian background and extremely prolific, he created works that combine optimism, sentimentality, and a rhapsodic...

conducting

(Encyclopedia)conducting, in music, the art of unifying the efforts of a number of musicians simultaneously engaged in musical performance. In the Middle Ages and Renaissance the conductor was primarily a time beat...

acceleration

(Encyclopedia)acceleration, change in the velocity of a body with respect to time. Since velocity is a vector quantity, involving both magnitude and direction, acceleration is also a vector. In order to produce an ...

uncertainty principle

(Encyclopedia)uncertainty principle, physical principle, enunciated by Werner Heisenberg in 1927, that places an absolute, theoretical limit on the combined accuracy of certain pairs of simultaneous, related measur...

Steichen, Edward

(Encyclopedia)Steichen, Edward stīˈkən [key], 1879–1973, American photographer, b. Luxembourg, reared in Hancock, Mich. Steichen is credited with the transformation of photography into an art form. At 16, whil...

Allobroges

(Encyclopedia)Allobroges əlŏˈbrəjēz [key], Celtic tribe in Gaul, inhabiting later Dauphiné and Savoy. They were conquered (121 b.c.) by Quintus Fabius Maximus, who was called Allobrogicus in commemoration of ...

Fenton, Elijah

(Encyclopedia)Fenton, Elijah, 1683–1730, English poet. A graduate of Cambridge, he was a schoolmaster for a time and later was a tutor in several noble families. He is chiefly remembered for his share in Pope's t...

Jaazaniah

(Encyclopedia)Jaazaniah jāˌāzənīˈə [key], in the Bible. 1 Head of a number of idolatrous priests whom Ezekiel saw in a vision. 2 Captain active in the politics of Palestine at the time of the fall of Jerusal...

Hérold, Louis Joseph Ferdinand

(Encyclopedia)Hérold, Louis Joseph Ferdinand lwē zhôzĕfˈ fĕrdēnäNˈ ārôldˈ [key], 1791–1833, French composer. He composed a number of operas, two of which—Zampa (1831) and Le Pré aux clercs (1832)�...