Film is a term that
encompasses motion pictures as individual projects, as well as the field in
general. The origin of the name comes from the fact that photographic film
(also called filmstock) has historically been 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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