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Allen, Woody

(Encyclopedia)Allen, Woody, 1935–, American actor, writer, and director, one of contemporary America's leading filmmakers, b. Brooklyn, N.Y., as Allen Stewart Konigsberg. Allen began his career writing for televi...

nutation

(Encyclopedia)nutation, in astronomy, a slight wobbling motion of the earth's axis. The causes of nutation are similar to those of the precession of the equinoxes, involving the varying attraction of the moon on th...

mechanics

(Encyclopedia)mechanics, branch of physics concerned with motion and the forces that tend to cause it; it includes study of the mechanical properties of matter, such as density, elasticity, and viscosity. Mechanics...

Lorentz contraction

(Encyclopedia)Lorentz contraction lôrˈĕnts [key], in physics, contraction or foreshortening of a moving body in the direction of its motion, proposed by H. A. Lorentz on theoretical grounds and based on an earli...

Brown, John, Scottish essayist

(Encyclopedia)Brown, John, 1810–82, Scottish essayist. He was a physician. His writing was collected in Horae Subsecivae (3 vol., 1858–82), which included his unique picture of a dog, Rab and His Friends (1859)...

work

(Encyclopedia)work, in physics and mechanics, transfer of energy by a force acting to displace a body. Work is equal to the product of the force and the distance through which it produces movement. Although both fo...

documentary

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

cinema

(Encyclopedia)cinema: see motion pictures.

airsickness

(Encyclopedia)airsickness: see motion sickness.

film

(Encyclopedia)film: see motion pictures.