After the excesses of the Christmas and a hard week back at work, I felt some sort of neurological test was in order.
Have a go at the Spiral pinwheel illusion.
What do you think? Have you been damaged by too much over-indulgence?
If the pinwheel illusion amused you, there are other good illusions at the eChalk site.
I especially like the Mona Lisa one.
What's your favourite? Do you know of any other good optical illusion sites on the web?
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Haha, they're good David. I particularly liked Colour Perception 2.
My daughter simply refused to believe the chess board colour perception one. She is convinced that there's some sort of electronic trickery going on. :-)
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