If you're using someone else's clock (e.g. GPS time) then it doesn't matter what's happening to you, you'll only know what you see on that clock. But, if you have your own clock (e.g. an HP 5071A) on your person, and can compare it to someone else's clock, then assuming both clocks are accurate enough, you can see any difference in the rate of time you are experiencing vs the other person.
Bob -------------------------------------------- On Fri, 5/20/16, Peter Reilley <preilley_...@comcast.net> wrote: Subject: Re: [time-nuts] GENIUS by Stephen Hawking (PBS TV), with 5071A cesium clocks To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Date: Friday, May 20, 2016, 10:24 AM I have a question. I, of small brain, am wondering: if the time difference between the top of the mountain and the bottom of the mountain is 20 nS over 24 hours could you repeat the same experiment using GPS? The time difference of 20 nS is measurable using GPS. The GPS clock must run faster on the mountain top than the GPS at the mountain base and yet the two remain synchronized to the satellite reference. Therefore the GPS 1 PPS signal (measurable to a few nS) must be wrong in in one of the local frame references. My brain hurts. Pete. On 5/20/2016 10:16 AM, Bob Camp wrote: > Hi > > Ok, so *that* link got me to the episode. Very impressive stuff. Well done !!! > > Bob > > >> On May 20, 2016, at 2:04 AM, Tom Van Baak <t...@leapsecond.com> wrote: >> >> For those of you who missed the live TV broadcast, I'm told PBS has a live stream: >> http://www.pbs.org/video/2365757267/ >> >> The cesium clock parts are in the last 15 minutes of the show. >> I also added more photos/plots to: >> http://leapsecond.com/great2016a/photos.htm >> >> /tvb >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
