Intercooler 16 year service

[Brett Dikeman]

At 1:47 AM -0400 7/1/03, Huw Powell wrote:
>>Oh, and if any of the paint comes off, touch it up lightly with some
>>flat black paint; not only are you protecting the aluminum, but black
>>colored items radiate more heat, a phenomenon called black body
>>radiation.
>
>Actually, as I dimly recall from a physics course long ago, black
>body radiation has nothing to do with that.  It has more to do with
>the wavelength (or frequency) of photons emitted by bodies based on
>their temperature.

Hmm, it probably would have been more accurate for me to say it is
DUE to a phenomenon called black body radiation.  Whups.

Anyway, I don't think you have it right either- wavelength is a side
effect of the kinetic energy of the atoms in the material, and a
shorter wavelength does indeed indicate a hotter object(radiation
starts in IR range, moves down to red, then yellow, etc...), but I
don't think a shorter wavelength itself causes more heat loss.

Here's a site which offers one explanation, though it feels simplified:

http://newton.dep.anl.gov/askasci/phy00/phy00507.htm

B
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