Spec sheet for the eye
Discussion
Found this article quite interesting... at any rate, I hope it's not a repost: http://www.kenrockwell.com/tech/how-we-see.htm
Some of it seems a bit dubious, though - he's over-simplified some aspects (especially how the visual system in the brain works; that is really fascinating). I'm bit surprised that he didn't point out that our retinas are wired up backwards (which is why we have a blind spot); squid and octopodes have their retina wired correctly and have no blind spot or vision degradation by having a network of nerves between the lens and the receptors.
Intriguing stuff
Ken Rockwell said:
Our eyes can't see a fixed, non-moving image. Our eyes are always scanning and moving. If you can lock your eye in one spot (this research usually requires rather painful apparatus to fix an eyeball), the image fades away. Even when we think we're staring, our visual systems are constantly moving our eyes slightly to keep the signals coming and the image refreshed.
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