The idea is to focus on the dot in the centre and then move your head constantly towards and away from the monitor. You should see the circles rotate spookily! Press the F11 key in your browser to see the illusion at full screen!
The idea is to focus on the dot in the centre and then move your head constantly towards and away from the monitor. You should see the circles rotate spookily! Press the F11 key in your browser to see the illusion at full screen!