| has gloss | eng: Lilac chaser is a visual illusion, also known as the Pac-Man illusion. It consists of 12 lilac (or pink, rose or magenta), blurred disks arranged in a circle (like the numbers on a clock), around a small black, central cross on a grey background. One of the disks disappears briefly (for about 0.1 second), then the next (about 0.125 second later), and the next, and so on, in a clockwise direction. When one stares at the cross for about 20 seconds or so, one see three different views: # A gap running around the circle of lilac disks # A green disk running around the circle of lilac disks in place of the gap # The green disk running around on the grey background, with the lilac disks having disappeared in sequence. This is due to an effect in which the colors of the lilac disks are inverted in the optical illusion to a green color. |
