[time-nuts] Updating the unit of,time: the second.

[Dr. David Kirkby]

On Tue, 28 May 2019 at 11:03, Attila Kinali <attila at kinali.ch> wrote:

> On Tue, 28 May 2019 03:06:12 +0100
> "Dr. David Kirkby" <drkirkby at kirkbymicrowave.co.uk> wrote:
>
> > I notice a lot of 1 kg weights on eBay, so perhaps the same will happen
> > with Cs clocks!
>
> This is rather unlikely. For one, Cs beam standards have a very limited
> life span. For an other I am pretty sure that the surge of kg weight
> standards on ebay is due to their manufacturing becoming cheap rather
> than the kg definition changing. Most of these standards are M1 or M2
> anyways (or in other words, they are accurate to 50ppm or 160ppm
> respectively [1]), which is way more than the slight change in the
> definition of the kg.


I assume that you missed the fact that I was joking about the 1 kg weights
on eBay.

>
>
>                         Attila Kinali


Dave, G8WRB


-- 
Dr David Kirkby Ph.D C.Eng MIET
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