An optical illusion image was uploaded on net few days’ back that shows some colors that aren’t really there.
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The image originally posted by Gizmodo, who said that just stare the red dot at the middle of the image for 10 seconds, your eyes will automatically fill some color in the blank portion of image after the 10 seconds when image become black & white.
Actually, by focusing in on the dot, you’re sort of temporarily burning your retina in with different colors.
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When the image becomes black and white, the halo of the colors still appears to linger.
