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    Why is it that when you see a bunch of light-colored cross designs on a dark background, or vice-versa, there seem to be gray dots in the crosses' intersections?

    Question #49618. Asked by the_peacemaker. (Jul 20 04 6:02 PM)


    Kainantu

    		When you notice the small grayish dots between the black crosses, they are not part of the drawing - they were put there by your brain! Scientists call this "visual vibration." Basically it means that when you see patterns of black and white, your eye sometimes confuses the two and blends them into patterns of gray that you see here. You are seeing something that is not really there!

    http://www.sciencebob.com/experiments/illusion.html

    Example at the above site.


    Jul 20 04, 7:10 PM

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