[time-nuts] GENIUS by Stephen Hawking (PBS TV), with 5071A cesium clocks

[Edesio Costa e Silva]

I believe not. 20 nS is about 6 meters error in height. I would need to know
the height difference much better than this to have an accurate measurement.

Edésio

On Fri, May 20, 2016 at 11:24:42AM -0400, Peter Reilley wrote:
> 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 <tvb at 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
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