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Author Topic: Optical Illusion  (Read 3289 times)

Offline Solvay_1927

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Optical Illusion
« on: 13/11/2005 23:10:05 »
Can anyone explain to me how on earth this illusion works??  (And what makes it work? Does it depend on the colours used?)



If (like my wife) you don't see the picture "rippling" straight away, try moving your head around / moving your gaze from one corner of the p[icture to the other.


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another_someone

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Re: Optical Illusion
« Reply #1 on: 14/11/2005 01:32:33 »
Don't know, but I'll make the following observation that might have some relevance.

If you look at the individual shapes, they are bordered by light and dark edges as if they were illuminated three dimensional objects; but the light and dark are on different edges on each of the shapes, as if each shape was illuminated from a different direction.  I can imagine that as the eye moves across the picture, it looks as if the the objects have moved in order to explain why they appear to be picking up light from different directions.

This then is reinforced by the alignment of the individual shapes as if they were on curved surfaces, e.g. a rippled surface.
 

Offline daveshorts

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Re: Optical Illusion
« Reply #2 on: 14/11/2005 09:07:06 »
If you keep my eye still it doesn't seem to produce the rippling effect, but if I read stuff either side I do get it.

interesting
 

Offline neilep

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Re: Optical Illusion
« Reply #3 on: 14/11/2005 13:13:41 »
Don't forget to check out these other pages contributed by fine upstanding members of this community:

http://www.thenakedscientists.com/forum/topic.asp?TOPIC_ID=1424

http://www.michaelbach.de/ot/index.html (Very good with explanations too)

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Offline stinkinstudentlamo

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Re: Optical Illusion
« Reply #4 on: 14/11/2005 17:53:11 »
Could it be that because your eyes are moving and therefore focusing on different points, you're seeing the darker bits turn into lighter bits and vice versa. combined with the shapes that could be producing the rippling effect.

Cool optical illusion though. I like it:D

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Offline Solvay_1927

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Re: Optical Illusion
« Reply #5 on: 14/11/2005 22:03:45 »
Oops, sorry, didn't realise the above picture had been posted on this forum only a year ago![:I]

Thanks Neil - the second link above is excellent, very interesting. And thanks Someone & Stinkin for the good suggestions.

For anyone who's interested, the site I got this illusion from is:
http://www.scarymonkey.net
My teenage son introduced me to that site last week and I've since become addicted to it. It's got some other very good illuisions on it, but also lots of other interesting stuff.  My favourite is the following video:
http://www.scarymonkey.net/movies/myhero.php
(That's not ukmicky miming into the webcam, is it?;))


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Offline erich

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Re: Optical Illusion
« Reply #6 on: 20/11/2005 06:41:56 »
Here's some more:

Very cool illusion
http://www.patmedia.net/marklevinson/cool/cool_illusion.html


Optical Illusions and Visual Phenomena
http://www.michaelbach.de/ot/

Have fun.................
Erich

Erich J. Knight
 

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Re: Optical Illusion
« Reply #6 on: 20/11/2005 06:41:56 »

 

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