Weird optical illusion

[StefanX]

Check out this link:

http://www.michaelbach.de/ot/col_rapidAfterimage/index.html

(Fixed link. Hope this works better!)

It's a ring of purple dots with a black cross in the middle - with one purple dot missing. The "missing" dot keeps rotating around the ring.

But if you stare at the black cross in the middle, the missing purple dot will look like a GREEN dot. (Because green is the opposite of purple.)

If you stare long enough at the black cross in the middle, ALL the purple dots will disappear - and all you'll see is one green dot rotating around the ring.

In other words, the only thing you'll see is the one thing THAT'S NOT THERE.

This comes from a bigger collection of 57 optical illusions here:
http://www.michaelbach.de/ot/index.html

[Deja Q]

1. Nominated

:D

[PATRICK]

2. Strange

Now I'm blind and I want to vote for the Green party. I guess I'll need the new touchscreen voting machines after all.

[Zero Division]

3. Fascinating

I've always wondered why I see purple and green together when I see afterimages with my eyes closed.

Thanks for sharing.

[CaliforniaPeggy]

4. Likewise nominated...

This is really and truly fascinating!

You see the thing that isn't there...the things that our brains do to us!

[HysteryDiagnosis]

5. The green dot represents the

wmd's now you see them.... now you don't. But hey, thank you very much, that was way too cool.