Optical Illusions

Go away from the monitor to perceive the illusions better.



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?
  1. ^ Yoshiki, Nishina. {{cite web}}: |access-date= requires |url= (help); Missing or empty |title= (help); Missing or empty |url= (help)