Flicker Colors
Flicker Colors
Flicker colors are optical illusions caused by motion. In this Demonstration, the rotating figure is black and white, and it appears black and white when it is still or when rotating slowly. If you increase the rate of rotation (by clicking the double up arrows a few times), you will begin to see yellow in the inner half and blue in the outer half (or vice versa). There is an optimal rotation rate where the effect is most prominent. If you reverse the rotation (by clicking the right or left arrow) the colors will change locations, with the yellow region becoming blue and the blue region becoming yellow. You can change the number and thickness of the tiers, and you can change the number of the solid black regions using the symmetry slider.