Joseph Plateatu - Phenakistoscope

Joseph Plateatu- Phenakistoscope:
The Phenakistoscope is uses the persistence of vision to create an illusion of motion. Although this theory had been recognized by the Greek mathematician Euclid, it wasn’t until 1829 that this principle became firmly established by Plateau. The Phenakistoscope used two discs mounted on the same axis. The first disc had slots around the edge, and the second had drawings of action, drawn around the disc in circles. Unlike Faraday’s wheel, whose pair of discs spun in opposite directions, a Phenakistoscope discs spun together in the same direction.  When viewed in a mirror through the disc’s slots, the pictures on the second disc will appear to move.
 source: http://animationgeek.blogspot.co.uk/2011/01/early-pioneer-joseph-plateau.html