[time-nuts] Reference oscillator accuracy
Hal Murray
hmurray at megapathdsl.net
Fri Nov 13 18:30:51 UTC 2009
> The ground wave path of WWVB varies due to a very small changes in the
> index of refraction (temperature and absolute humidity) over the path.
> It is not much, but is measurable.
How much is "not much"? Say over a 1000 km path. Are we talking
microseconds or picoseconds?
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