[rescue] fans fans fans...

[Dave McGuire]

On June 21, Joshua D Boyd wrote:
> > With all this talk about U1 fans, and on the cobalt list I'm on, _they're_
> > always talking about fans..  I was wondering.. is there an optimum
> > temperature for a CPU? Is cooler always better. Is freezing best? This Q
> 
> Freezing can attract condensation, which is far from best.

  CCDs used for astronomical imaging are usually cooled with multi-stage
peltier modules or liquid nitrogen to reduce noise..  They avoid the
condensation problem by mounting the assembly in an evacuated chamber
with a "cold finger" (ahem) in contact with the CCD substrate to suck
the heat out.

         -Dave

-- 
Dave McGuire                  "Needing a calculator indicates that
St. Petersburg, FL              your .emacs file is incomplete." -Joshua Boyd