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Re: Heat Loss

  • From: George L Smyth <GLSmyth@xxxxxxx>
  • Subject: Re: Heat Loss
  • Date: Mon, 02 Dec 1996 07:13:36 -0500
Andy Finney wrote:
> 
> I think we're back to the question of how hot is hot?  An iron can get very
> hot.  You would certainly blister your skin if you touched it and you can
> follow the heat versus colour curve down from white heat down to red (like
> an electric fire) and if you drop the temperature a bit more the metal is
> radiating near infrared simply because it isn't hot enough to radiate
> visible red.  I think it's something to do with the energy of the photons
> or some such thing I never learned at school.

In addition to my article, I can point to the Kodak publication "Thermal
Recording and Infrared Photography of Hot Objects."  Call Kodak
(800-242-2424) and ask for publication P-570.  If someone is outside the
US and wants this information, send me Email and I'll scan the
publication for you.

george

-- 
 Handmade Photographic Images     
  http://www2.ari.net/glsmyth/

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Topic No. 2