It has nothing to do with this. A long (length >> width) bar can simply be modeled as a long ladder of series resistors's and capacitors to ground:
---zzz---zzz---zzz---- ... ---zzz--- _|_ _|_ _|_ _|_ ___ ___ ___ ___ ----| ----|-----|----- ... ----|----- If you put a rectangular pulse in the left end, it will emerge later and very much rounded at the right end. Either do the math or simulate it in Spice or with a handful of R's and C's and a pulse generator and scope. No inductors needed. PERIOD. That model fully accounts for your observations with the bar heated at one end. -John ================= > In message <4a309b30.7000...@sonic.net>, Rex writes: > >>My observation, from doing this >>several times, is that the cold water quickly absorbes heat from the red >>end, but also seems to chase a lot of the heat quickly up toward the >>cold end, making the bar rapidly uncomfortable to hold. > > I've seen the effect you describe explained in an article somewhere, > very likely New Scientist or SciAm about five years ago. > > When you rapidly heat or cool metals, very often changes in crystal > lattice structure is involved some of them resulting in quite drastic > changes to volume. > > Heat is essentially atoms wiggling about, and when you change the > modes of freedom for the atoms, they may have to wiggle harder. > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > p...@freebsd.org | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by > incompetence. > > _______________________________________________ > 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.