>> Next you will tell me colored people emit differently from whites
>
> Well, actually, yes. =A0Think about it. =A0If they didn't you couldn't
> distinguish them by color.

I am not sure, but you seem to confuse emitting with
reflecting/absorbing. Humans regardless of their scin color emit zero
in visible light, so your ability to distinguish them by color does
not depend on their emitting capabilities which are zero for all.


>> It's blackbody radiation, and everything emits it and absorbs it.
>
> No, only truly black bodies do. =A0Everything else emits and absorbes les=
s.

I am not sure again, normal glass emits zero UV light but absorbs it
quite well (heck, otherwise they would not use quartz glass in UV
erasable PICs)


> This is the same effect as when you see "shimmering
> heat" off the highway in front of you in the summer.
> You're not seeing the hot air, but you are seeing the
> refraction effects of the thermal gradients in the air.

Refraction effects of the thermal gradients in the air at such
distances? I am not sure, but Sun itself, being a rather hot "air",
emits, not refracts.

-- =

http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist