Film is a term that encompasses individual motion pictures, the field of film as an art form, and the
motion picture industry. Films are produced by
recording images from the world with
cameras, or by creating images using
animation techniques or
special effects. Films are cultural artifacts created by specific cultures, which reflect those cultures, and, in turn, affect them. Film is considered to be an important
art form, a source of popular entertainment, and a powerful method for
educating -or
indoctrinating- citizens. The visual elements of cinema give motion pictures a universal power of communication; some movies have become popular worldwide attractions, by using
dubbing or
subtitles that translate the dialogue. 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.
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Audiovisual works consisting of a series of related images which, when shown in succession, impart an impression of motion, together with accompanying sounds, if any. 17 USC
SEQUENZE DI IMMAGINI. FILM. PELLICOLE CINEMATOGRAFICHE
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