Quote:
Originally Posted by Ari
I investigated it in the photoshops. If you guessed that the circles were the same horizontal lines just rotated 90° you'd be right.
My guess is the illusion has something to do with background/foreground flipping.
While investigating I discovered this, which besides screwing with your vision if you stare long enough produces an interesting gradient effect if you stare at one spot and move closer and further away.
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That's insane. I don't see a gradient in the big image, but in the thumbnail I do. That's without doing any staring or moving, just at a glance that's how it looks.