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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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