Tom, I suspect something so sensitive gives you significant "false positives" when a delivery truck goes by. I assume you try to correlate your data with other enthusiasts nearby to resolve those discrepancies the way we do with our clocks?
Didier On Sat, Dec 1, 2018, 7:44 AM Paul Bicknell <[email protected] wrote: > Hi John > > Any chance of a picture of your Synchronome pendulum clock and associated > timing / logging equipment > > Paul B > > -----Original Message----- > From: time-nuts [mailto:[email protected]] On Behalf Of Tom > Van Baak > Sent: 01 December 2018 13:18 > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] Detecting gravity with optical atomic clocks > > > 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. > > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2016.0.8048 / Virus Database: 4793/15883 - Release Date: 08/14/18 > Internal Virus Database is out of date. > > > _______________________________________________ > 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. > _______________________________________________ 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.
