A film projector is a device that displays moving images from a film reel onto a screen. It works by shining a light through the film, which is made up of a series of still images. As the film moves, these images are projected in rapid succession, creating the illusion of motion. Film projectors are commonly used in cinemas and for home movie screenings. There are different types of film projectors, including 16mm and 35mm projectors, which refer to the width of the film used. Some projectors are designed for professional use, while others are more suitable for amateur filmmakers. Despite the rise of digital technology, film projectors remain popular among enthusiasts and in certain artistic settings.