Thread: Cold Radiation
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Old August 8th 15, 06:44 PM posted to uk.sci.weather
Alastair McDonald[_2_] Alastair McDonald[_2_] is offline
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Default Cold Radiation


"Alan LeHun" wrote in message
. ..

I shall try one more time...
Assuming an object is not receiving any 'warm' radiation then...

An object receiving 'cold' radiation will cool.
The less 'cold' radiation the object receives, the quicker it will cool.
An object not receiving any 'cold' radiation will cool quickest.

This clearly demonstrates that 'cold' radiation does not cool objects
but does, in fact, warm them.


The less 'cold' radiation it receives at a fixed temperature the SLOWER it
will cool. The only way to reduce the radiation at a fixed temperature is to
move the object away. If you move the cold object away, the radiation will
fall off with the square of the distance and the cone of cold radiation will
be narrower. The smaller cone will allow more radiation from the
surroundings which will be at the same temperature as the as the object. So
adding the additional radiation from the surroundings will cause the object
to cool more slowly.

Replace the cold body in the initial position with an even colder body, then
the first body will cool more quickly.

Good try!

Cheers, Alastair.