Sunday, July 10, 2005

Grand Illusions

"Dragon Optical Illusion

This little dragon appears to be looking at you. But if you rotate the base this way or that the dragon's head appears to turn the other way...

Or if you stand the dragon on a shelf and walk about, the dragon's head follows you around the room. And yet it is simply a sheet of paper, cut and folded in a certain way. How does it work?"