Blue and the green - an optical illusion

[Tucson_Tim]

http://blogs.discovermagazine.com/badastronomy/2009/06/24/the-blue-and-the-green/

Pretty interesting . . .


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.

[mfumbesi]

When I saw this a day before yesterday, I thought the BA was also pulling a fast one on us. I had to cover the other colours before I believed it.

[Moose]

I could see it in the zoomed image. That's a neat effect.

[korjik]

I could see it in the zoomed image too, but my brain was having trouble interpreting the blue stripe, it looked like it was flickering between blue and green

[mugaliens]

I'm having trouble seeing my keyboard...