oldbloke: (dave&jack)
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posted by [personal profile] oldbloke at 02:41pm on 21/02/2008
Why eyes are white.

WELL???
There are 8 comments on this entry. (Reply.)
 
posted by [identity profile] hotbadgerdeluxe.livejournal.com at 02:38pm on 21/02/2008
So make them black...
 
posted by [identity profile] caramel-betty.livejournal.com at 02:40pm on 21/02/2008
NY Times Link
...
Why should humans be so different? And yet we are. We can’t fool anyone. The whites of our eyes are several times larger than those of other primates, which makes it much easier to see where the eyes, as opposed to the head, are pointed. Trying to explain this trait leads us into one of the deepest and most controversial topics in the modern study of human evolution: the evolution of cooperation.

The idea is simple. Knowing what another person is looking at provides valuable information about what she is thinking and feeling, and what she might do next. Even young children know that when a person is looking at one toy and not another, she most likely prefers that toy and may reach for it. Professional poker players are often so worried about others reading their minds by reading their eyes that they wear sunglasses.
...
ext_22879: (Default)
posted by [identity profile] nja.livejournal.com at 02:43pm on 21/02/2008
One of them is white and the other one is left.

This joke © Michael Barrymore.

I was just thinking about his "I don't like that answer", when replying to a student who has just got his module marks from last term, and is "not satisfied with 69%".
 
posted by [identity profile] whizzerandchips.livejournal.com at 02:57pm on 21/02/2008
So we can see in the dark...
 
posted by [identity profile] artela.livejournal.com at 03:42pm on 21/02/2008
http://www.ihateglasses.com/html/anatomy_of_the_eye.html

The sclera is the bit you want to look at.

In some animals it is black rather than white.
 
posted by [identity profile] mhoulden.livejournal.com at 03:55pm on 21/02/2008
After last night's sparring, mine are more red and bloodshot. Should make it interesting when I go over to my mum's tonight for her birthday.
 
posted by [identity profile] hoiho.livejournal.com at 03:57pm on 21/02/2008
Cuz they're prettier that way.
 
posted by [identity profile] anged.livejournal.com at 04:58pm on 21/02/2008
It's physics. Dang, my A level biology stuff is still at work. Erm, something to do with light absorbing better. Or maybe that's why the inside of the eye is black. Anyway, tissue is white, unless you can see the blood through it. Let J have a good look at your eyes when you have a hangover - he should see lots of blood vessels then...

I guess he's noticed that pupils get bigger and smaller in different light conditions? There's an afternoons fun with a torch...

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