Friday 18 July 2008

Dancing counter-clockwise

I could easily fill this blog with illusions, they fascinate me. But strangely, since I had an operation to fix a detached retina, I find it harder to see them.

The spinning lady illusion is one I had problems with. Sometimes I can look at it for ages, and just see a lady spinning clockwise. But when my brain suddenly decides she is spinning the other way, the effect is amazing.

It's one of those illusions where you really start to think it's a trick... or rather a trick played by something other than your own mind.