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Re: exponential cooling



Hi all-
In response to:
**************************************************
I recall this mechanism goes as the difference between T^4 of the brick and
T^4 of 'its surroundings'. Wouldn't everything that goes as some
difference be exponential? It seems to me like the time constant might be
affected by the power of T involved, but the cooling would be exponential.
*********************
It might be helpful to recall that the exponential function is
the solution of the differential equation:
dy/dt = ky
where k is a constant. Note that it is the first power of y that
occurs on the right hand side of the equation.
Regards,
Jack

So are we concluding that there is no exponential factor in the solution or
just that it is not simply exponential?

Dewey

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Dewey I. Dykstra, Jr. Phone: (208)385-3105
Professor of Physics Dept: (208)385-3775
Department of Physics/SN318 Fax: (208)385-4330
Boise State University dykstrad@varney.idbsu.edu
1910 University Drive Boise Highlanders
Boise, ID 83725-1570 novice piper

"Physical concepts are the free creations of the human mind and
are not, however it may seem, uniquely determined by the external
world."--A. Einstein in The Evolution of Physics with L. Infeld,
1938

"Don't mistake your watermelon for the universe." --K. Amdahl in
There Are No Electrons, 1991.
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