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Hi Dennis,
Thanks for sharing.  Here's one of my favorite optical illusions.  I had to
double check it myself to make sure it wasn't a hoax.  
http://www.chessbase.com/puzzle/puzz10b.htm 

-Eric
Exhibit Developer
Children's Museum of New Hampshire



-----Original Message-----
From: Informal Science Education Network
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Sent: Sunday, July 06, 2008 7:50 PM
To: [log in to unmask]
Subject: [ISEN] FW: Very neat illusion

ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related
institutions.
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Dear all,

 

My son sent me an optical illusion unlike any I've seen before.  I
thought you would enjoy it.  Does anyone know what is happening in the
eye/brain to make this work?

 

http://www.johnsadowski.com/big_spanish_castle.php

 

Dennis

"Work hard to find something that fascinates you. When you find it you
will know your lifework" -- Richard Feynman

Dennis Schatz

Senior Vice President for Strategic Programs

Pacific Science Center

200 Second Ave. No.

Seattle, WA 98109

Phone - 206-443-2867

Fax - 206-443-3631

www.dennisschatz.org <http://www.dennisschatz.org> 


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