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< Esato Forum Index > General discussions > Non mobile discussion > Fading Dots: Great Optical illusion , can you see it? Bookmark topic

all the dots should disapear apart from 1 that is changing coulour as it spins around

it is a blind spot in your eye that you dont see in evryday life that causes this
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Posted: 2007-06-24 12:01:56
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As it gives you a fixed point to look at, same areas of your retina are subject to the same purple colour, which after a while looses sensitivity against that specific colour and looses track of the dots.

On a bright day, look at a fixed point on a white car or something for ten seconds or so, then close your eyes, you will see the car and its surroundings for some time. Your retina is over-exposed and will keep sending the same data to your brain for a while. Or something like that..
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Posted: 2007-06-24 13:55:12
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or just stare at the light bulb
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Posted: 2007-06-24 13:58:33
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thats cool
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Posted: 2007-06-24 15:18:59
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Its called the fading lilac illusion. search on wikipedia for it and you should find a very nice explanation. Also there's a link somewhere on there to a flash version where you can see the effect of the color of the dots and of the background on the illusion. Would have posted the link if i wasnt on the phone right now
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Posted: 2007-06-24 17:43:42
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Look:

http://www.michaelbach.de/ot/

For any one else who is intrested in optical illusions and visual phenomina
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Posted: 2007-06-24 21:29:01
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