Optical Illusion

[Rik]

To enjoy the illusion, click on the image to enlarge.

[wizard509]

not sure about this one. What am I supposed to see?

[steve.ledger]

Rings of dots (appear to) slowly rotate clockwise or anti-clockwise depending on the angle of the dot's shading.

[gwpriester]

I have seen this before, many times, but it is still amazing. It proves that seeing is not always believing.

[wizard509]

OK thanks Steve.

Here is one for you Rik. This patterned after David C. Roy kinetic sculpture "shimmer wood".

youtube of his sculpture is here, http://www.youtube.com/watch?v=0iQO_UUjDqM

after shimmer wood sculpture.swf

Guess you'll have io click on the swf to open sorry.

[Rik]

Here is one for you Rik.

That's pretty good, Larry. But, it's animation.

Whereas, the one I posted is just a drawing. And the illusion is that it appears to move.
Plus I also enjoy seeing if I can draw it and see if the illusion still works.

[csehz]

Thanks Rik it is very interesting creating animation with a single frame, that is the performance

[gracehjs]

But they don't

Rings of dots (appear to) slowly rotate clockwise or anti-clockwise depending on the angle of the dot's shading.

[Rik]

But they don't

Grace: The illusion works on the fact that you don't keep your eyes, still.
If you keep your eyes perfectly still, then nothing will appear to move.
But, as we generally move our eyes slightly (looking here then over there a bit, and so on) then things appear to move.

[wizard509]

Bummer! It just doesn't work for me.