Stopped: only black and white, with no color anywhere.
Tricks of color
Benham’s top
This disc is only black and white. What do you see when it spins?
Pale rings of color. It works best printed on a real spinning top.
Why? No one is sure. The cells in your eye that sense red, green and blue react at different speeds, and the flicker may set them off unevenly.
Picture: Drawn by Science Playground · Wikipedia(opens in a new tab)