Optical illusions


in Geek stuff, Science

Optical illusions are an excellent way to prove that our visual perceptions are not simply the result of the pattern and nature of photons hitting our retinas. They prove that our brain makes big assumptions to simplify the task of understanding the world.

Here are two neat ones, from a blog that promises to post more:

At some previous point, I am sure I mentioned the compelling dragon hollow face illusion.

{ 3 comments… read them below or add one }

. March 26, 2009 at 8:50 pm
. June 26, 2009 at 5:19 pm

You see embedded spirals, right, of green, pinkish-orange, and blue? Incredibly, the green and the blue spirals are the same color. At first I thought Richard was pulling our collective legs, being a trickster of high magnitude. So I loaded the image in Photoshop and examined the two spirals. In the two squares displayed below, the one on the left is colored using the same color from the blue spiral, and on the right using the green spiral.

. September 16, 2009 at 10:08 am

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