Illusion of Movement
These images give the illusion of movement. The images of circular patterns appear to rotate while the images of square patterns tend to bend or warp. It all comes from the mind, trying to interpret what the eye sees. Images can be enlarged by clicking on it.
The BulgeThe figure appears to bulge out, even though all the squares in the figure are equal and parts of the figure appear to move
Spiral And Drift Illusionscircles appear to rotate (peripheral drift illusion). Gray concentric circles appear to be a spiral (spiral illusion).
Vertical Distortion And IllusionAlthough the blocks are aligned vertically, the figure appears to show curves.
Tilting Squares Of IllusionThe checkerboard is vertical or horizontal but appears to tilt. Parts of the figure appear to move.
For further explanation of why these illusions work and more great examples we highly recommend this site. http://www.ritsumei.ac.jp/~akitaoka/rotate-e.html

