Interesting O ptical effects




This is a rather odd after-effect that I first noticed when colour-cycling Fractals, especially those with a pattern of concentric circles.

Stare at this moving image for several seconds.  
Then look at the static image below. Strange eh?

(Animation 3KB)
                         

moves in
static

Now try this one!
(Animation 3KB)

moves out
static

ALSO IN THIS SECTION

Another aftereffect...

...and another

...and something completely different




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