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vibration

(Encyclopedia)vibration, in physics, commonly an oscillatory motion—a movement first in one direction and then back again in the opposite direction. It is exhibited, for example, by a swinging pendulum, by the pr...

Beatty, Warren

(Encyclopedia)Beatty, Warren (Henry Warren Beaty) bāˈtē, bēˈ– [key], 1937–, motion picture act...

Whitney Museum of American Art

(Encyclopedia)Whitney Museum of American Art, in New York City, founded in 1930 by Gertrude Vanderbilt Whitney with a core group of 700 artworks, many from her own collection. The museum was an outgrowth of the Whi...

Twombly, Cy

(Encyclopedia)Twombly, Cy (Edwin Parker Twombly, Jr.), 1928–2011, American painter, b. Lexington, Va., studied Boston Museum School, Washington and Lee Univ., Lexington, Va., Art Students' League, New York City. ...

Rosenquist, James

(Encyclopedia)Rosenquist, James, 1933–2017, American painter, b. Grand Forks, N.Dak., studied Univ. of Minnesota (1952–54), Art Students League, New York City (1955). An important figure in the pop art movement...

Simpson, O. J.

(Encyclopedia)Simpson, O. J. (Orenthal James Simpson), 1947–, American football player, b. San Francisco. As a running back for the Univ. of Southern California, he won the Heisman Trophy as the best college play...

Chávez Frías, Hugo Rafael

(Encyclopedia)Chávez Frías, Hugo Rafael o͞oˈgō räfäĕlˈ chäˈvĕs frēˈäs [key], 1954–2013, Venezuelan political leader, president of Venezuela (1999–2013). Raised in poverty, he was educated at the ...

Berlusconi, Silvio

(Encyclopedia)Berlusconi, Silvio bĕrˌləskōˈnē [key], 1936–2023, Italian business executive and politician, ...

Dunham, Katherine

(Encyclopedia)Dunham, Katherine dŭnˈəm [key], 1909?–2006, American dancer, choreographer, and anthropologist, b. Chicago. She studied anthropology at the Univ. of Chicago, where she received a B.A. and Ph.D. a...

Gülen, Fethullah

(Encyclopedia)Gülen, Fethullah, 1941–, Turkish Islamic leader, founder of the Gülen movement, an educational, religious, and social Islamic organization that supported the Justice and Development party (AKP) in...