Unfolding Spirals Illusion   This applet requires Sun's Java VM 2 which your browser may perceive as a popup. Which it is not. If you want to see the applet work, visit Sun's website at http://www.java.com/en/download/index.jsp, download and install Java VM and enjoy the applet. Buy this applet A few words Copyright © 1996-2008 Alexander Bogomolny                   Unfolding Spirals Illusion Several effects could be observed depending on the specific values of the available parameters. Spirals may appear to interlock, concentric circles may seem to be shifted relative to each other. Sometimes the pieces will appear move like in the Revolving Circles Illusion. The idea is due to the Japanese psychologist Akiyoshi Kitaoka, see [McNaughton, pp. 46-47]. References P. McNaughton, Perspective and Other Optical Illusions, Walker & Company, 2007 Copyright © 1996-2008 Alexander Bogomolny

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