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Baidu Library has eight major art forms in the world: literature, painting, music, dance, sculpture, architecture, drama, film. Film is an art form, an invention and a technology. Balaz, a Hungarian film theorist. Bella said: "the only art that can let us know about moviesjoy its date of birth is the movie, unlike other kinds of art, which can't be checked." Today's editor will introduce the history of film technology.