[LEAPSECS] preprint about timekeeping for neutrino experiment

[Tom Van Baak]

> If they were using stand-alone caesium clocks, then yes - gravity and

> altitude would make big difference.  But they locked their clocks to a

> single common-view GPS satellite - surely, then, they were both

> ticking at the same rate, and in sync?

> 

>     Peter


Careful -- if they were using stand-alone caesium clocks what they
would see a constant difference in *rate*, which is a linear growing
difference in *time*.

But all they are seeing is a constant difference in time, exactly as if
there was instrument latency or cable length calibration errors.

/tvb