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The wagon-wheel effect (alternatively called stagecoach-wheel effect) is an optical illusion in which a spoked wheel appears to rotate differently from its true rotation. The wheel can appear to rotate more slowly than the true rotation, it can appear stationary, or it can appear to rotate in the opposite direction from the true rotation ...
English: This is a conversion & extension the "Spinning Dancer.gif file" with 34 frames & 1 second of play time to the OVG format with 2040 frames and 60 seconds of play time. The intent is to allow the user to start and stop the display without the distraction of continual play.
The illusion derives from the lack of visual cues for depth. For instance, as the dancer's arms move from viewer's left to right, it is possible to view her arms passing between her body and the viewer (that is, in the foreground of the picture, in which case she would be circling counterclockwise on her right foot) and it is also possible to view her arms as passing behind the dancer's body ...
The Spinning Dancer is a kinetic, bistable optical illusion resembling a pirouetting female dancer. The dancer can be seen to be spinning alternately one direction, or the other. In visual perception, the kinetic depth effect is the phenomenon whereby the three-dimensional structural form of an object can be perceived when the object is moving.
Well, its status as an important optical illusion is an issue to be discussed in the optical illusion article or in an AfD for The Spinning Dancer. But it is quite relevant in its own article. Being nothing special is another story. gren グレン 07:28, 13 February 2008 (UTC) Every picture in every article is "relevant".
In his writings and art criticisms during the mid-1960s art critic and artist Donald Judd claimed that illusionism in painting undermined the artform itself. Judd implied that painting was dead, claiming painting was a lie because it depicted the illusion of three-dimensionality on a flat surface. Judd claimed that painting needed to recognize ...
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Arthur "Art" Shapiro is an American vision scientist and creator of visual illusions.He is the co-editor of the Oxford Compendium of Visual Illusions. [1] He is currently a professor of psychology and computer science with the American University in Washington, D.C., and Director of the Collaborative for Applied Perceptual Research and Innovation (CAPRI).