Kenneth <kdw### [at] earthlinknet> wrote:
> [-- text/plain, encoding 8bit, charset: iso-8859-1, 17 lines --]

> "Bill Pragnell" <bil### [at] hotmailcom> wrote:

> > I remember once seeing the sun's power spectrum compared to the eye's response
> > spectrum, possibly at uni. The eye's spectrum follows the sun's very closely -
> > not suprising considering we evolved under its glare. This of course means that
> > we are far more sensitive to green light than red or blue, which are at the far
> > extremes of the visible range.

> Just pondering that evolutionary adaptation is fascinating. I wonder if it came
> about from the fact that we descended from tree-or-forest-dwelling animals,
> where the predominant color was green? Not that the *entire* earth was
> forested, but a good portion of it.  Does it also mean that we humans can now
> see subtle gradations of green better than subtle gradations of red or blue?

  No, it's because of the surface temperature of the Sun. Both leaves and
best vision is at the green amplitude for a common reason.

-- 
                                                          - Warp

Post a reply to this message