Wundt Block 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                   Wundt Block Illusion This one is named after the 19th century German psychologist Wilhelm Wundt. It is also often ascribed to the psychologist Joseph Jastrow. Two laminas are exactly the same, although the lower one appears longer and not as tall, especially when one of their edges made collinear. (Both laminas are moveable.) Copyright © 1996-2008 Alexander Bogomolny

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