Terry Blanton wrote:
Probably not to a newborn.
Only because they most likely can't focus well enough to see the star at
all.
Rod density is far higher near the periphery of the retina, and rods
have much better low-light sensitivity than cones. Consequently looking
"sidelong" at anything in extremely dim light gets you a brighter, but
lower resolution and typically black&white, image of it.
The fovea has very high cone density but no rods. Center vision is very
high resolution, it's in color, but its low-light response lacks.
Humans have foveas, but not all animals do. An animal without a fovea
probably can't read the New York Times (insufficient resolution) but can
most likely see you clearly as you fumble around looking for a
flashlight after the lights go out while you're reading the newspaper in
the evening.
Terry
On Mon, Aug 11, 2008 at 4:45 PM, Harry Veeder <[EMAIL PROTECTED]> wrote:
Have you ever noticed that a star will appear slightly brighter in your
peripheral vision than when you look directly at it? Try looking just to the
side of faint star.
Harry
