See Color where there is None

I’m a big fan of optical illusions. This is a new one to me. Go here, stare at the black dot for 30 seconds and then move your mouse over the image. You will see a blue sky and green grass for as long as you keep your eyes still. Does anyone out there still believe everything they see?

What is suprising to me isn’t that my eyes are fooled in the first place. It is due to a phenomenon called ‘after-image‘. What is remarkable is that the illusion remains for as long as your eyes are still - the initial mistaken perception remains until it is corrected by new information (scanning with the eyes).

Link to Optical Illusion

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