Persistence of Vision
The Digital Phenakistiscope requires the Macromedia Shockwave plug-in. Move your mouse left or right until the images on the rotating disc appear to merge in to a single animation. Give all of the different wheels a go!

This modern-day optical toy relies on the refresh of your computer monitor to help produce the animation effect. When the rate at which the animation wheel is 'rotating' is 'in sync' with the refresh rate of the monitor the images appear to fuse and move!