[time-nuts] Double ovened 10811-60158 on ebay

Rick Karlquist richard at karlquist.com
Sat Jul 12 22:48:06 EDT 2008


Bruce Griffiths wrote:
> Mark Sims wrote:
>> Remember that heat flow is proportional to the FOURTH power of the
>> temperature difference.  Insulation is generally a linear function.  The
>> combination makes thermal stabilization over even small ambient
>> temperature ranges rather problematic.
>>
>>
>>
>
> Nonsense.
> The radiative transfer between 2 bodies at different temperatures is
> proportional to the difference between the 4th powers of their absolute
> temperatures.

And this quantity is approximately equal to the THIRD power of
the temperature difference for small temperature differences.
(A simple calculus problem!)

Rick Karlquist N6RK




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