Inside a film projector, light from a lamp is condensed into a strong beam. The beam shines through a rotating shutter on to a moving strip of film. The shutter lets light through only when each picture on the film is in the right position. The images are flashed on to a screen in such rapid succession that the picture appears to be moving continuously.
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| 35 mm Kinoton FP30ST movie projector, with parts labeled. (Click thumbnail for larger text.) |
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