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Re: [Amps] making sinks black

To: "Roy Koeppe" <royanjoy@ncn.net>,"Amps Reflector" <amps@contesting.com>
Subject: Re: [Amps] making sinks black
From: "Jim Tonne" <tonne@comcast.net>
Date: Sat, 22 Jul 2006 12:57:06 -0400
List-post: <mailto:amps@contesting.com>
Roy wrote:


>  Black bodies radiate and absorb heat many times 
> more efficiently than a white or shiny body.

I have heard it said that this is largely true at extreme
temperatures.  Might be nice to have someone dissipate a
"real world" amount of power (say 100 watts) in a heat
sink of raw aluminum and do it again with an identical
sink that is black.  I have a hunch that the heatsinks will
have similar temperatures.

>  Try wearing a nice black tee shirt in the direct sun as 
> compared to a white one.

Absolutely no question here but isn't this a case of 
absorbing heat as opposed to radiating it?

- Jim WB6BLD



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