The Thatcher Illusion (using Madonna) , the original, Bush
posted by srboisvert on Mar 21, 2004 - 25 comments

sandlot science ... optical illusions and visual oddities... hundreds of exhibits and interactive demonstrations.
posted by crunchland on Nov 3, 2003 - 4 comments

You think it's moving but it's not.
posted by xmutex on Jul 24, 2003 - 85 comments

A professor of vision science at MIT understands that life isn't just black and white, even though we often see it that way. This amazing illusion proves it, and these slick, fast-loading, Flash demonstrations of lightness perception show how it's done. (My favorite is the "Koffka Ring".) White paper here, for deeper background.
posted by taz on Sep 27, 2002 - 29 comments