Optical illusions

[Deetee]

By request of those on the puzzle section, I am posting the link to this interesting site, which helps explain the genesis of some fascinating optical illusions (as well as being very entertaining)

http://www.michaelbach.de/ot/

[alfaniner]

Here's a really cool one also -- can't remember where I got it from:

Illusion page (http://www.ritsumei.ac.jp/~akitaoka/index-e.html)

[arcticbiker]

I tried alfaniner's link, and at first, it didn't seem to work. Everything looked static. After about 10 seconds of staring at it, then the patterns seemed to rotate.

Anyone else have different experiences?

[ceptimus]

The 'rotating snake' illusion is presented analysed and explained in the link that Deetee opened this thread with. Why post it separately?

[ceptimus]

bump.