Monday, March 23, 2009

The dancer



In which way is the woman dancing? Clockwise or anti-clockwise? Sure?
It spins in the way you want to!
Don't you trust us?
Think about the fact that the image is not a tridimensional (since it is on your PC screen, it can just have two dimensions), so it can not have a rotational movement. If you want to see it spinning on the other way, have a look for one moment to the other side of the screen.
But why do you see in one or the other way?
The image has been extracted from an austrilian newspaper:
http://www.news.com.au/heraldsun/story/0,21985,22556281-661,00.html
As it is explained here, it could depend on which side of your brain you use more.

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