19 November 2012


1.  Click on the above image to enlarge.
2.  Stare at the red dot for 30 seconds ~ maintain focus.
3.  Shift your gaze to a white wall or other blank space.

What do you see?

(Normally when we stare at a photo-positive image for this exercise, our eye and brain reverse it to a photo-negative afterimage when we look away.  Since this image is already a photo-negative, you should see the original photo-positive when you move your eyes away.)

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