'Film' encompasses motion pictures as individual projects, as well as the field in general. The name comes from the photographic film (also called filmstock), historically the primary medium for recording and displaying motion pictures. Many other terms exist — motion pictures (or just pictures and "picture"), the silver screen, photoplays, the cinema, picture shows, flicks — and commonly movies.
Films are produced by recording people and objects with cameras, or by creating them using animation techniques and/or special effects. They comprise a series of individual frames, but when these images are shown rapidly in succession, the illusion of motion is given to the viewer. Flickering between frames is not seen 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. Also of relevance is what causes the perception of motion; a psychological effect identified as beta movement.
Film is considered by many to be an important art form; films entertain, educate, enlighten and inspire audiences. Any film can become a worldwide attraction, especially with the addition of dubbing or subtitles that translate the film message. Films are also artifacts created by specific cultures, which reflect those cultures, and, in turn, affect them.
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