Spatial frequency 2

Another way of demonstrating the effect of spatial frequency on the size of the jump (see the previous demo). The texture here has lower spatial frequencies near the center, and higher ones near the outer edges. When it jumps, the center seems to rotate faster, and jump farther, then the outer edges (which, for some observers, don't seem to jump at all), making the ring look like it's deforming. (Some observers also perceive this deformation to a lesser degree during the normal, slow rotations.)