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.
The origin of the name "film"
comes from the fact that photographic
film (also called film stock) had
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. |