The Phenakistoscope was invented by Joseph Plateau in 1832. This device consists of a flat disk with radial slots cut into the outer edge, a wooden handle to which it is mounted and a mirror. The flat disk is painted black on one side. A series of sketches, showing a succession of movement, are drawn on the other side. The series of sketches begin and end in the same position, allowing for an uninterrupted cycle of motion. The mirror allows the viewer to see the sketches on the other side through the radial slot. When spun, this creates the illusion of motion.