Balls and Shadows 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                   Balls and Shadows Illusion Human brain makes use of a variety of clues to interpet a retinal image. One is the perceived distance between an object and its shadow. Objects on the ground touch their shadows. Objects in the air appear higher up as the distance between them and their shadows grows. References A. Seckel, The Art of Optical Illusions, Carlton Books, 2000 (#13) Copyright © 1996-2008 Alexander Bogomolny

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