|
 Optical illusion causing the brain to interpret colors wrongly. |
 Optical illusion - the red-orange lines are strictly horizontal/vertical, and fully parallel/perpendicular to each other |
 Simultaneous Contrast Illusion. The horizontal grey bar is the same shade throughout. |
 All lines and edges are strictly horizontal/vertical, and fully parallel/perpendicular to each other |
 The edges between the diamond-shaped areas are straight lines, but may appear otherwise. |
 Which square is bigger? |
