Close your left eye and stare at the cross. As the circle moves left and right, it should pass through your blind spot and disappear completely! You may need to lean in closer to get this to work.
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As the small circles intersect with the large ones, we seem to see the outlines of a growing and shrinking square. But there is no "square" -- your brain is trying to visualize in terms of solid shapes, and fills in the blanks.
What's your first impression of this image? Yellow arrows pointing left, or green arrows pointing right? There is no "correct" answer, but different people perceive this image differently at first.
Try quickly scrolling up and down or move your mouse pointer down across this image, following the pointer closely with your eyes. You should see a rippling effect moving through the picture -- even though it's a completely static image!
i like opticall illusions
1 i have always found amazing is the following one->
the Squere A and B ARE the same collour! i didnt believe it at first i checked in paint lol
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