The persistence of vision refers to the length of time the retina (the "screen" at the back of our eyes which is sensitive to light) retains an image. If we see a light flash every tenth of a second or less, we perceive it as continuous.
Well it’s a device that produces an illusion of action from a rapid succession of static pictures.
It consists of a cylinder with slits cut vertically in the sides. Beneath the slits, on the inner surface of the cylinder, is a band which has either individual frames from a video/film or images from a set of sequenced drawings or photographs.
As the cylinder spins, the user looks through the slits at the pictures on the opposite side of the cylinder's interior. The scanning of the slits keeps the pictures from simply blurring together, so that the user sees a rapid succession of images producing the illusion of motion, the equivalent of a motion picture.
Its good for producing short animations, however since the device itself is very small that means you only get to produce short animations.
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