The history about movie projector

When you watch a movie in a cinema, you will find that the most important device that is used is a movie projector. This device projects the frames from a rool of film. As the result, the moving picture is created. Then, the picture is projected to a screen. In a movie projector, there are 4 components that include the lamp, lens, spool and audio. If all components work properly, you will be able to enjoy the movie that you want to watch.
Back to the past, the movie projector was invented

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