Film projection is the process of projecting a film onto a screen or wall. It involves the use of a projector, which is a device that projects an IMAGE from a film onto a surface. The IMAGE is usually projected onto a large screen, but can also be projected onto a wall or other surface. The projector uses light to project the IMAGE, and the IMAGE is usually magnified to make it easier to view. Film projection has been used since the early days of cinema, and is still used today in theaters, home theaters, and other venues.