Look at this illusion for a while and it will appear to be shimmering and moving. Of course it isn't. Also, follow the outermost groove and watch change from a groove to a hump as you go around the wheel!
Look at this illusion for a while and it will appear to be shimmering and moving. Of course it isn't. Also, follow the outermost groove and watch change from a groove to a hump as you go around the wheel!