Orbison 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                   Orbison Illusion Radiating lines appear to distort a perfect square. This is a variant of the Hering illusion and reminds of Wundt illusion. References R. N. Shepard, Mind Sights, W. H. Freeman and Company, 1990 A. Seckel, The Art of Optical Illusions, Carlton Books, 2000 (#126) The Mind's Eye, Readings from SCIENTIFIC AMERICAN, W. H. Freeman and Company, 1986 Copyright © 1996-2008 Alexander Bogomolny

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