The Praxinoscope

At the entrance to Discoveryland Theatre, you'll see large cylinders with strips of drawings and mirrors in the center. If you look at the drawing strip directly while it spins, you'll only see blurs. But if you look at the center mirrors, the magic happens. Thanks to "persistence of vision" (a feature of our eyes), the mirrors make the drawings come alive and move in a loop. They're not just any drawings - they're usually frames from Mickey Mouse's first animation shorts.