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Old April 15 2009, 05:47 AM   #996
Apogeal Alpha01
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Re: Viddy this! -Oh my friends… (cool/funny short videos thread)

The Amazing Dots




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... amazing or what?
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Last edited by Apogeal Alpha01; April 15 2009 at 06:00 AM.
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