The Lilac Chaser is a captivating visual illusion that has been around since the late 19th century. It involves a sequence of rapidly alternating images of a single lilac flower and a field of lilacs. When viewed for a few seconds, the single flower appears to move across the field
The lilac chaser is a visual illusion, also known as the Pac-Man illusion. It consists of 12 lilac blurred discs arranged in a circle around a small black central cross on a grey background. One of the discs disappears briefly, then the next, and the next, and so on, in a clockwise direction. When one stares at the cross for at least 30 seconds, one sees three illusions:A gap running around the circle of lilac discs; A green disc running around the circle of lilac discs in place of the gap; and The green disc running around on the grey background, with the lilac discs having disappeared in sequence.