If I had not seen it, I would not have believed it

Optical illusions are carefullly crafted artifacts and illustrations intended to deceive whoever is viewing them. Sometimes they exist in nature (animal camouflage comes to mmind). At other times they suggest the existence of the impossible in nature (see Waterfall or Ascending and Descending by M. C. Escher). They make the present seem absent or the equal. seem unequal.

vanishing elves
http://www.phy.ntnu.edu.tw/java/flash/strange.html

http://www.ebaumsworld.com/illusions.shtml

http://www.qualitylogoproducts.com/lib/optical-illusions.htm

http://dogfeathers.com/java/spirals.html

http://www.sandlotscience.com/Camoflage/Camouflage_frm.htm

http://www-bcs.mit.edu/people/adelson/checkershadow_illusion.html

 http://www.sandlotscience.com/

http://www.geocities.com/SoHo/Museum/3828/

http://www.eyetricks.com/illusions.htm

http://rpm.spinn.net/optic.htm

http://www.grand-illusions.com/square.htm

http://www.microprizes.com/public/Colors.htm

http://www.geocities.com/SoHo/Museum/3828/optical.html

This page was last modified by mgosselin on 10/08/2005