Distorted Lines 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                   Distorted Lines Illusion Circles on triangles do not appear quite round. Triangles on circles look concave. Similar to Poggendorff, Hering, Orbison, Zöllner illusions, the crossing lines distort the perception of the lines they cross. References Ya. I. Perelman, Fun With Maths and Physics, Mir Publishers, Moscow, 1988 (ISBN 5-03-000025-9) A. Seckel, The Art Optical Illusions, Carlton Books, 2000 (#110) Copyright © 1996-2008 Alexander Bogomolny

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