This is a well know optical illusion created by L. Hermann. It has black squares, gray lines and white dots. What our eyes see is something different. They see the white dots turn to black or gray dots and appear to blink as you move your eyes around. The picture never changes or blinks at all. Letting your field of vision get wider you will see that they are all white dots. This is somewhat tricky to do without moving your eyes but can be done.
Optical illusions like this are easy to make but cause us to think of [Read More...]