Zeotrope

A Zeotrope is a device that creates the illusion of motion from a highly succession of static pictures. It is a cylinder with vertically slits in the sides, with a band of images from a set of sequenced pictures. The slits scans the images preventing them form blurring together and when it was spun at the right speed the images appeared to be moving.

 It generally focuses on the movements that repeats themselves like walking or animal movements. At first it looks like just plain images inside the cylinder, but once it started spinning it turns into something magical if you look through the little slots.

The Zeotrope worked  similarly to an earlier animation device called the Phenakiscope. This used the persistance of vision principle to create an illusion.