Simple animation of a spinning dancer silouette. Some people will see it clockwise, others counterclockwise. You may be able to perceive the direction switch from one to another by switching your focus from the silouette to the shadow of the leg. You can adjust the animation speed with left/right buttons. Detailed description of this fenomena: http://en.wikipedia.org/wiki/The_Spin:ning_Dancer The Spinning Dancer, also known as the silhouette illusion, is a kinetic, bistable optical illusion resembling a pirouetting female dancer. The illusion, created in 2003 by web designer Nobuyuki Kayahara, involves the apparent direction of motion of the figure. Some observers initially see the figure as spinning clockwise (viewed from above) and some counterclockwise.
- Simple animation of a spinning dancer silouette. Some people will see it clockwise, others counterclockwise