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Optical Illusions et al...


DJ_NUFC
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Can you really trust your eyes and brain? Worth a read. Wish they'd go into more detail though.

 

http://seedmagazine.com/content/article/the_science_of_illusion/

 

http://seedmagazine.com/images/uploads/TroxlerIllusion.jpg

 

Stare at the red dot in the center of the figure for a minute or two. Before long, the green ring will disappear—it simply seems to fade into the white background. There are no tricks: This is a simple, static image file. The effect has been known for more than two centuries and is named for its discoverer, Ignaz Paul Vital Troxler (1780–1866), a Swiss physician and philosopher. “Troxler fading” is actually related to what you experience when you get “dizzy”: You become so habituated to a phenomenon (spinning in a circle or seeing a green ring in your peripheral vision) that you stop noticing it’s there. Or, rather, you don’t realize that your perceptual system has begun actively ignoring it. It’s only when your circumstances change that you see what the phenomenon has done to your perceptual system. When you stop spinning, the world seems to continue, in reverse. When you look away from the green ring, you see a red ring in the same part of your visual field.

 

 

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These are the best two in the world, with no question :)

 

http://langabi.name/blog/wp-content/images/blog/optical%20illusion.jpg

 

(A and B are the same shade of grey, copy it into paint or photoshop to check)

 

 

This one is puzzling me.

Aye, me too, i refuse to believe that they are the same colour!

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These are the best two in the world, with no question :)

 

http://langabi.name/blog/wp-content/images/blog/optical%20illusion.jpg

 

(A and B are the same shade of grey, copy it into paint or photoshop to check)

 

 

This one is puzzling me.

Aye, me too, i refuse to believe that they are the same colour!

Aye, I put this into paint and its weird.  I used the dropper on square a and drew on all of the squares with it, some of the lighter ones had lines on them but also some of the draker ones, but not all and the colour seemed to change the further down you draw.  Mental.  WTF is going on.

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