Brightness Consistancy
Color Consistency
The red squares are the same color in the top and bottom of the "X".
shape
Which of the figures in the picture do you think would measure the tallest with a ruler? Don't measure -- just guess!
Muller Lyer Illusions
Poggendorf Illusion
Spiral aftereffect
“Stepping feet” Motion Illusion
T-llusion
Ames Room
Good vs Evil – figure ground
Are the horizontal lines parallel, or do they slope?
How many legs does the elephant have?
Man playing a horn? Or woman's face?
A rabbit, looking right? Or a duck, looking left?
What do see?
Three prong fork?
Is this woman old...or young?
Wavy Squares? No! The background of concentric circles makes the squares appear distorted.
Perpetually ascending staircase... how can the man go up all the time and come back to the same place over and over?
Stare at the Reversing Staircase Illusion until it changes to a different staircase.