This one is really great, try it : look just above or below the circle, keep looking forward and move your head to the left and the right. It's like the background in the circle is moving !
Created by Hajime Ouchi in 1977
This one is really great, try it : look just above or below the circle, keep looking forward and move your head to the left and the right. It's like the background in the circle is moving !
