Thermal conductivity of iron is 0..161 at 18C, and .191 from 100C to 1245C according to my Handbook (conditions are calories per second through a plate 1 cm thick across an area of one sq. cm when the temperature difference is one deg C). Point is, that's only 3 parts per 100, not enough for the crude sensing system employed? Don Latham
Tom Van Baak >> 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 > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > -- Dr. Don Latham AJ7LL Six Mile Systems LLP 17850 Six Mile Road POB 134 Huson, MT, 59846 VOX 406-626-4304 www.lightningforensics.com www.sixmilesystems.com _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
