[time-nuts] Thunderbolt stability and ambient temperature
rexa at sonic.net
Thu Jun 11 05:48:38 EDT 2009
Poul-Henning Kamp wrote:
>In message <4A309B30.7000400 at 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.
Thanks, that sounds like the most likely explanation I have heard. If
you find a more complete citation, I'd be interested to hear about it.
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