How about magnetic effects such as those seen with Galfenol etc. ? Steve
--- On Thu, 6/11/09, Tom Van Baak <t...@leapsecond.com> wrote: From: Tom Van Baak <t...@leapsecond.com> Subject: Re: [time-nuts] Thunderbolt stability and ambient temperature To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Date: Thursday, June 11, 2009, 5:54 PM > 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 -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
