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which metal for best reflectance of solar heat? - Page 2

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Posted by Andy Resnick on August 19, 2005, 4:48 pm
 
phlegmatico@yahoo.com wrote:


What's your application?  Are you concerned with long-term oxidation of
the metal (i.e. aluminum vs. gold)?  Chemical resistance? Is there a
waveband of particular importance (i.e. UV, visible, IR, far-IR, etc)?
What about specular vs. diffuse reflections? AFAIK, Spectralon reflects
greater than 99% of incident light from the UV through the IR (although
there's Infragold as well....)

A great reflector in the millimeter-wave are those metallized insulation
  panels for home construction.  Cheap, flat, and nearly perfect
reflectiors in the GHz.


--
Andrew Resnick, Ph.D.
Department of Physiology and Biophysics
Case Western Reserve University

Posted by TokaMundo on August 19, 2005, 5:12 pm
 
On Fri, 19 Aug 2005 12:48:32 -0400, Andy Resnick


  Gold makes the best IR mirrors.  That is why gold plated films
were/are used on the moon lander and on satellites.  Probably
something to do with absorption rates, and surface quality.

Posted by dances_with_barkadas on August 20, 2005, 9:02 am
 Andrew Resnick asked:


well, let's see what the original poster said:



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