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simple harmonic motion

(Encyclopedia)simple harmonic motion: see harmonic motion. ...

perpetual-motion machine

(Encyclopedia)perpetual-motion machine, device that would be able to operate continuously and supply useful work, in violation of the laws of thermodynamics. A machine that would produce more energy in the form of ...

documentary

(Encyclopedia)documentary: see motion pictures. ...

cinema

(Encyclopedia)cinema: see motion pictures.

film

(Encyclopedia)film: see motion pictures.

animated cartoon

(Encyclopedia)animated cartoon: see Nontheatrical Film under motion pictures. ...

Field, Rachel

(Encyclopedia)Field, Rachel, 1894–1942, American writer, b. New York City, educated at Radcliffe. Her books for children include The Cross-Stitch Heart and Other One-Act Plays (1927), Hitty: Her First Hundred Yea...

Thomas, John Charles

(Encyclopedia)Thomas, John Charles, 1891–1960, American baritone, b. Meyersdale, Pa., studied at the Peabody Conservatory, Baltimore. After a successful career in musical comedy he made his operatic debut in Wash...

special effects

(Encyclopedia)special effects, in motion pictures, cinematographic techniques that create illusions in the audience's minds as well as the illusions created using these techniques. Some common examples are the use ...

Pons, Lily

(Encyclopedia)Pons, Lily pänz, Fr. pôNs [key], 1904–76, French-American coloratura soprano. Pons studied piano at the Paris Conservatory. She made her debut in Delibes's Lakmé at Mulhouse, Alsace, in 1928. She...