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.
/tvb
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