[time-nuts] Thunderbolt stability and ambient temperature
Joseph M Gwinn
gwinn at raytheon.com
Wed Jun 10 19:28:21 EDT 2009
time-nuts-bounces at febo.com wrote on 06/10/2009 07:23:56 PM:
> Joseph M Gwinn wrote:
> > I read somewhere the suggestion to take the cast iron block
> from an old
> > automobile engine and put it in a heavy insulated wooden
> cabinet: ~250 Kg
> > of iron in an insulated box. Cracked blocks are useless in
> an engine, and
> > so are available in junkyards quite cheap.
> Yes, but water is so much easier to find, and easier to
> package, plus it has a great storage capability.
And evaporates and leaks. But yes, I've used water for quick jobs.
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