[time-nuts] Re: What everyday uses are there for accurate clocks?

[Andy Talbot]

I believe the electricity distribution network uses real time to measure
phase.
 It used to be  done by modulating an RF carrier and sending over the grid
superimposed on HV, but the ability to get nanosecond real time precision
removes the need to do that - they can just measure the AC waveform
directly at the point of measurement.  They also use fibre optic as an
alternative.

Andy
www.g4jnt.com



On Tue, 29 Nov 2022 at 09:31, Dr. David Kirkby via time-nuts <
time-nuts at lists.febo.com> wrote:

> I mentioned to someone the other day that I owned an HP GPS time and
> frequency standard. He asked me a simple question, but one I didn’t know
> the answer to.
>
>
> Apart from GPS, what in the daily lives of the general public need the sort
> of accuracy one can get from time-nut grade clocks? I believe some
> financial transactions is one application, and the cellular phone system
> another. Are there others?
>
> I found a few links
>
> “The importance of time measurement”
>
>
> https://www.nsai.ie/national-metrology/calibration-services/time-and-frequency-calibration/the-importance-of-time-measurement/
>
>
> “The importance of measuring time”
>
>
> https://www.cranfield.ac.uk/alumni/communications/alumni-news/2021/0108-the-importance-of-measuring-time
>
> but have not seen any reference to anything much on the topic.
> --
> Dr. David Kirkby,
> Kirkby Microwave Ltd,
> drkirkby at kirkbymicrowave.co.uk
> https://www.kirkbymicrowave.co.uk/
> Telephone 01621-680100./ +44 1621 680100
>
> Registered in England & Wales, company number 08914892.
> Registered office:
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