Re: [ATM] Does glass retain moisture?

["Richard Schwartz" <richas@earthlink.net>]

> [Original Message]
> From: Mark Cowan <toolontop@yahoo.com>
> To: Lawrence D. Lopez <lopez@mv.mv.com>; Mark Holm <mdholm@telerama.com>
> Cc: <atm@atmlist.net>
> Date: 4/2/2004 11:18:53 PM
> Subject: Re: [ATM] Does glass retain moisture?

> Well, I may be totally wrong here, but tube currents
> are due to convective heat transfer, not radiation -
> eg, the thermal energy off the surface (aluminum
> coated or bare) goes into agitating air molecules,
> which in their newfound enthusiasm spread it around,
> expanding the gas and rising up across the mirror and
> up the tube...  Radiative cooling works best with a
> large temperature differential, as in direct to the 3
> degree K out in space. 

Of course this is wrong!   Just look over the top of a hot automobile
engine and you can actually see the heat waves radiating up from the engine
area.


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