> Surely, this is nothing new? Once or twice a year some national lab, often NIST, makes an announcement of a new level of precision for their atomic clocks. It's pretty cool, actually. It's good PR. The rate of progress is amazing.
> I thought standard pendulum clocks were quite good at detecting gravity as > well! Yes and no. Modern uses for precision gravity measurement often require precise data while flying or in orbit. Pendulum clocks don't do well in those conditions. > They make excellent earth-quake detectors - Randall Peters published many > excellent papers on this subject many years ago, fascinating stuff. Yes. For example, see the pendulum results of yesterday's earthquake: http://leapsecond.com/pend/synchronome/quake.htm > John Moran /tvb _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
