#1 Checker Shadow Illusion.
The image depicts a checkerboard with light and dark squares, partly shadowed by another object. The optical illusion is that the area labeled A appears to be a darker color than the area labeled B. However they are of identical color.
You can try and test it yourself: open the image in an image editing program and using the eyedropper tool to verify that the colors are the same.
#2 Ebbinghaus illuson
The Ebbinghaus illusion, or Titchener circles, is an optical illusion of relative size perception. The two orange circles are exactly the same size; however, the one on the right appears larger.
#3 Cafe Wall Ilusion
The café wall illusion is a geometrical-optical illusion in which the parallel straight dividing lines between staggered rows with alternating black and white “bricks” appear to be sloped.
#4 Impossible objects
An impossible object (also known as an impossible figure ) is a type of optical illusion. It consists of a two-dimensional figure which is instantly interpreted by the visual system as representing a projection of a three-dimensional object.
#5 Troxler’s fading
Troxler’s fading is an optical illusion affecting visual perception. When one fixates on a particular point for even a short period of time, an unchanging stimulus away from the fixation point will fade away and disappear. Recent research suggests that at least some portion of the perceptual phenomena associated with Troxler’s fading occurs in the brain.
Look at the center for 15s and the purple dots will vanish!
Look at the red dot for 15-20s and the blue circle will vanish!
#6 Herring illusion
The Hering illusion : When two straight and parallel lines are presented in front of radial background (like the spokes of a bicycle), the lines appear as if they were bowed outwards.
#7 Illusory motions
The term illusory motion, also known as motion illusion, is an optical illusion in which a static image appears to be moving due to the cognitive effects of interacting color contrasts and shape position.
#8 Revolving circles
The two circles seem to rotate when the viewer’s head is moving back and forth while looking at the black dot.