Very interesting!
Skeptics should be shown the RGB values of relevant pixels, by using
PhotoShop, or other viewers which show this info.
I suspect the striking success of Illusion #2 capitalizes on the fact that
"brown" is not a spectral color and so is more subjective in character -
depending greatly on surrounding colors.
Bob Sciamanda (W3NLV)
Physics, Edinboro Univ of PA (em)
trebor@velocity.net http://www.velocity.net/~trebor
----- Original Message -----
From: "Stefan Jeglinski" <jeglin@4PI.COM>
To: <PHYS-L@lists.nau.edu>
Sent: Wednesday, January 29, 2003 4:26 PM
Subject: a link to some interesting illusions