Saturday, June 10, 2006
Spanish castle optical effect
This has been going around for a couple of days, but I just found out about it. It's a neat optical effect -- you stare at a color negative of a photo for 30 seconds (or even just 15), then move the mouse over the photo, keeping your eyes on the black dot. The photo appears in color, until you move your eyes. Link
posted by Mark Frauenfelder at 08:38:10 AM permalink | Other blogs' comments
