posted on Jan, 15 2006 @ 05:20 AM
Originally posted by asala
THIS IS WIERD....
no its not its bull.
have a look here
www.patmedia.net...
this link is similar to what your trying to do.....
Your eye has rods and cones. The cones (I think) detect colour and the rods detect black and white. I may have that around the wrong way.
Anyway, let's assume I'm right. The colour detection units are clustered in the centre of your eye and while they see colour, they aren't as good
at seeing faint objects in dar conditions.
The black & white detectors are clustered around the peripheral of your eye and are more sensitive to light conditions.
Next time it starts to get dark in the evening you will notice there comes a moment when you don't see colour, but you see in b&w. Reds will look
black or grey etc. THis is when the cones are not effective at colour detection (due to low ambient light) and the rods take over.
Also an old astronomers tip - when looking in the dark night sky you find more faint objects by averting your eye slightly from where you want to look
and you'll see faint objects, but when you look directly at the faint object you can't see it. Again, that's 'cos the b&w receptors, around the
peripheral of your eye, are more sensitive to light. Also they are more sensitive to detecting moving objects and that's why often you see something
move in the corner of your eye.
[edit on 15-1-2006 by sanctum]