Rotation Illusion for Radial Wave Motion of Discrete Points

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This Demonstration shows an illusion in which the brain perceives an apparent rotation of a figure made up of discrete points. Yet, if you follow a single point, you can see that it oscillates radially with no tangential motion. Set the display options and then select the "play" arrow to animate the points.

Contributed by: Derek Xiao (December 2016)
(Torrey Pines High School)
Open content licensed under CC BY-NC-SA



Torrey Pines High School, Advanced Topics in Mathematics II, Fall 2016.

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