hmurray at megapathdsl.net
Thu Mar 29 06:30:08 EDT 2007
> Not sure what you mean by "current" pendulum clocks. I think modern
> commercial pendulum clocks are nowhere as accurate as the
> state-of-the-art pendulum clocks of the 1920's.
I was thinking of serious (crazy/nutty) amateurs, assuming they would be
better than what is now available commercially.
> Yes, it is a neat benchmark. Not a few modern clock makers have tried
> to reproduce or improve on the old masters. It turns out a pendulum
> clock needs to be accurate (stable) to 1e-7 or 1e-8 for tau from an
> hour to a day in order for it to "detect" tides. See this article I
> wrote a while back on the subject:
> Lunar/Solar Tides and Pendulum Clocks (part 1)
Nice. Thanks. Did you ever write chapter 2?
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