"Cousin Ricky" <rickysttATyahooDOTcom> wrote:
> The Sun's surface temperature is about 5800K.  I read some time ago that it is
> slightly bluer than a black body of the same temperature, but I cannot now find
> information about that.
>
> The Sun does look whiter in space than from Earth, because from Earth, the
> atmosphere scatters out some of the shorter wavelengths.  That's why the sky is
> blue.  If you combine the blue of the sky with the yellowish-white of the Sun,
> you'll get roughly the actual color of the Sun (although not exactly, because
> the atmosphere does absorb some color).
>
> Note that even from Earth, the Sun is not as yellow as most people think it is.
> A sheet of white paper in direct sunlight indoors (where the blue from the sky
> is mostly blocked) still looks white, doesn't it?  That the Sun is thought to be
> yellower than it really is seems to be some psychological effect that to my
> knowledge there's no definitive explanation.

What value for lumens should I use? 1 lumens seems a little dark, so I set it to
2 instead.


Mike

Post a reply to this message