The Spinning Dancer, also known as the Silhouette Illusion, is a kinetic, bistable, animated optical illusion originally distributed as a GIF animation showing a silhouette of a pirouetting female dancer. The illusion, created in 2003 by Japanese web designer Nobuyuki Kayahara,[1][2] involves the apparent direction of motion of the figure. Some observers initially see the figure as spinning clockwise (as viewed from above) and some counterclockwise. Additionally, some may see the figure suddenly spin in the opposite direction.[2]
- ^ Nobuyuki Kayahara's website
- ^ a b Parker-Pope, Tara (2008-04-28). "The Truth About the Spinning Dancer". Well Blog. The New York Times. Retrieved 2008-08-07.