Sit at a comfortable distance and move forward towards the center of each figure. A change in apparent brightness and form will result. Continue moving back and forth to repeat the change. (But make sure nobody’s watching you.)
Source: Alan Stubbs
Dynamic Luminance-Gradient Effect Illusion
January 6th, 2007 — Illusions
Thirteen Photographs That Changed the World
January 6th, 2007 — Various
