[time-nuts] Thunderbolt stability and ambient temperature

Tom Van Baak tvb at LeapSecond.com
Fri Jun 12 00:54:56 UTC 2009

> Tom
> The thermal conductivity isnt constant with temperature.
> It also varies between different crystalline forms of the same material.
> This can be seen in more comprehensive tables of thermal conductivity.
> In particular at cryogenic temperatures the thermal conductivity can
> change dramatically (eg in superconductors)
> Bruce

Excellent. Not constant; and perhaps not even linear?

If you run across a thermal conductivity table for steel
from say 0 to 1000 C let us know. From that graph we
should be able to calculate what Rex felt when he put the
red hot (1500 F?) end of the 1 inch bar into cold water.

Better yet, if some metal or material has an even more
pronounced thermal conductivity function it would make
a great party trick.


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