Look at the little oval-shaped objects. It appears that they are jiggling up and down as the vertical lines move across the picture. But this is just an illusion. The oval-shaped objects are NOT moving at all. You just get the impression that they are.
Look at the little oval-shaped objects. It appears that they are jiggling up and down as the vertical lines move across the picture. But this is just an illusion. The oval-shaped objects are NOT moving at all. You just get the impression that they are.