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Old Apr 5, 2005, 4:07 AM   #1
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'CHECK' this one out to see if you can. Then try your eye dropper tool.

I'm colour blind, and even I can see they are different..........aren't they ?

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Old Apr 5, 2005, 7:02 AM   #2
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Old Apr 5, 2005, 1:07 PM   #3
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I've seen this before and it still is amazing.

But there's an explanation for the illusion.

Field A is surrounded by brighter -almost white- fields.
Field B is surrounded by darker -almost black- fields.

That's the reason why field A looks darker in contrast to the white surrounding fields compared to field B which is only surrounded by darker fields.

EDIT: oops. I've just seen that there's also a more detailed explanation on the website, too: http://web.mit.edu/persci/people/ade..*****iption.html
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Old Apr 6, 2005, 5:16 AM   #4
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The very first time I saw this thing, I was taken by complete surprise...because I simply didn't think that we could be deceived in such a way....especially when there's no way that you'd realise the colours were actually the same just by looking at it. Our eyes and brain simply says 'they're DEFINITELY different colours'.
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