Spinning circle optical illusion
Believe it or not, but the field of optical illusions is still quite active. Here’s one of the newest ones by an digital artist jagarikin. The circles are spinning in place, but not moving or changing sizes. The arrows inside the circles is what makes it appear to be moving.
Here’s a good write-up of the effect called the Phi phenomenon.
Here are some more phi phenomenon effects he created that use color cycling:
Check out more of jagarikin’s work here.