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

Lux, Jim jim at luxfamily.com
Tue Nov 29 21:56:55 UTC 2022


On 11/29/22 11:36 AM, Andy Talbot via time-nuts wrote:
> The kilogram was sorted a couple of years ago.
> It is now defined in terms of teh Planc constant which has been declared as
> a fixed value
> All the other SI units are defined the same way now - by fixing the
> physical constants  = and all referring back to the second.
>
> https://physicsworld.com/a/new-definition-of-the-kilogram-comes-into-force/#:~:text=The%20kilogram%20is%20now%20defined,such%20as%20the%20Kibble%20balance
> .
>
> Andy
> www.g4jnt.com


Isn't the volt defined in terms of a Josephson junction, and frequency, 
which is in terms of time, again.






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