Neat'o
#11
09-02-2008, 10:32 PM
count the black *****
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Watch the X in the middle very closely. You should start to see a green dot that rotates around the circle - this dot is an illusion; then you should see see the purple dots disappear.... but they haven't really gone. It is an after image effect, sometimes called a 'negative retinal afterimage' - move your head slightly, and the dots will reappear
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Last edited by bow2no1; 09-02-2008 at 10:32 PM. Reason: Automerged Doublepost
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#18
09-03-2008, 10:18 PM
Diesel Wrench
