Joe Gwinn wrote:
> William Unruh <un...@invalid.ca> wrote:
>> Joe Gwinn <joegw...@comcast.net> wrote:
>>> We have a more direct diagnostic available
>>> -- abruptly turn the background traffic off while observing
>>> time slew with respect to a free-running rubidium.
>>
>> Sure. As I said if you have a different clock then you can do more.
>
> The Rb unit will not tell us the time, but will tell us
> how much our sense of time slewed when the interference
> was removed.
See Also: Chip Scale Atomic Clock
Cesium vapor cell microwave laser beam oscillator reference RTC in a Chip
e.g. <symmetricom.com/csac> Time of day, PPS, ...
{Accuracy / Stability to a few pico sec isn't cheap though}
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