Optical Illusions

Are you seeing what you are really seeing?

• Two Faces?
• Find nine people
• Book
• Duck
• Horn
• Native
• Old Woman?
• A vanity or ?
• Freud
• Girl
• Intersections
• Lines
• Princess
• Skull
• Triangle

Lightness Perception and Lightness Illusions, based on a paper by Edward H. Adelson. These optical illusions are Flash based, and do have sound. Before looking at these, check out the checkerboard. More information at MIT.

• Contrast
• Craik
• Criss Cross
• Haze
• Knill
• Koffka
• Plaid
• Snake
• Steps
• Vasarely
• White