See the colored spirals, below? Your brain makes them look like two different colors, "green" and "blue," but they are, in reality, exactly the same color!
Full explanation:
http://blogs.discovermagazine.com/badastronomy/2009/06/24/the-blue-and-the-green/
Do you remember an old issue of LangaList Plus (2004-03-25)? At the point 11 you post a link to a far more astonishing illusion: Checkershadow
ReplyDeleteActually, in the image you posted, the 'blue' spiral really is bluer than the 'green' spiral, due to the antialiasing that took place when the image was resized for this blog post. You really need to click through to see the full-size image before it works properly.
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