Changes

Traditional films are made up of a series of individual images called [[frames]]. When these images are shown rapidly in succession, a viewer has the illusion that motion is occurring. The viewer cannot see the flickering between frames due to an effect known as persistence of vision — whereby the eye retains a visual image for a fraction of a second after the source has been removed. Viewers perceive motion due to a psychological effect called [[beta movement]].

Traditional films are made up of a series of individual images called [[frames]]. When these images are shown rapidly in succession, a viewer has the illusion that motion is occurring. The viewer cannot see the flickering between frames due to an effect known as persistence of vision — whereby the eye retains a visual image for a fraction of a second after the source has been removed. Viewers perceive motion due to a psychological effect called [[beta movement]].

The origin of the name "film" comes from the fact that photographic film (also called [[film stock]]) has historically been the primary medium for recording and displaying motion pictures. Many other terms exist for an individual motion picture, including picture, picture show, photo-play, flick, and most commonly, movie. Additional terms for the field in general include the [[big screen]], the [[silver screen]], the [[cinema]], and the movies.

The origin of the name "film" comes from the fact that photographic film (also called [[film stock]]) has historically been the primary medium for recording and displaying motion pictures. Many other terms exist for an individual motion picture, including picture, picture show, photo-play, flick, and most commonly, movie. Additional terms for the field in general include the [[big screen]], the [[silver screen]], the [[cinema]], and the movies. [http://en.wikipedia.org/wiki/Film]