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Which square is darker?

 
 
Reply Sun 31 Aug, 2008 04:40 pm
Which square is darker, A or B?

http://static.flickr.com/105/283164592_de284b2746.jpg
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Type: Discussion • Score: 0 • Views: 3,638 • Replies: 5
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Izzie
 
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Reply Sun 31 Aug, 2008 04:58 pm
@Robert Gentel,
These optical illusions are fascinating...

here's another...(if I can post it properly)
http://i277.photobucket.com/albums/kk41/LzzieIzzie/illusion_couleurinv2.gif

Attentively fix the cross at the center of the circle during several seconds.
Two spectacular phenomena will occur :
on the one hand a yellow spot will be formed ;
on the other hand, if you do not blink eyes, the blue spots disappear.

JTT
 
  2  
Reply Sun 31 Aug, 2008 05:16 pm
@Izzie,
Also, a yellow halo of spots appears and moves to different places on the page. If I stare long enough, two yellow halos of dots appeared.
Izzie
 
  0  
Reply Sun 31 Aug, 2008 05:24 pm
@JTT,
Clever a? Love it!

http://i277.photobucket.com/albums/kk41/LzzieIzzie/illusion_rotation.gif

fix the central black spot while approaching you or while moving away you from the screen, the side rhombuses seem to turn !

The illusion is perceived only if the patterns are seen corner of the eye, it is for that that you must fix the black spot.

Robert Gentel
 
  2  
Reply Sun 31 Aug, 2008 05:25 pm
@Izzie,
If you like those kinds of optical illusions I made a whole thread for them here.
Izzie
 
  1  
Reply Sun 31 Aug, 2008 05:30 pm
@Robert Gentel,
Oh.... that's a bit coco....

(grabs hold of sofa whilst feeling dizzy....)



thanku - there is an excellent one with 4 black spots and an illusion of Jesus... can't work out how to copy it tho. So clever!
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