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On Mar 18, 2011, at 9:20 PM, [email protected] wrote: > http://www.astronomycast.com > > Episode 211 was a good primer on celestial navigation. It covers time piece > construction. > > Building your own backyard continental drift hardware would be high on the > coolness scale. > > > ------Original Message------ > From: Wolfgang > Sender: [email protected] > To: Discussion of precise time and frequency measurement > ReplyTo: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] BYMLBI (Back Yard Medium LBI) > Sent: Mar 18, 2011 8:58 PM > > On Friday 18 March 2011, Brooke Clarke wrote: >> For a number of decades I've tried to figure out a way to measure the >> period of the Earth's rotation accurate to at least 1 ms. >> >> [...] >> >> Is it possible to do it using a radio method in my (large) back yard? >> > 1 ms / day = 1.2e-8 = 460um position accuracy on the ground. > > If the measurement takes more than a couple of days, continental drift > may need to be considered. > > - Wolfgang, DL1SKY > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
