[time-nuts] IEEE Spectrum - Dec 2017 - article on chip-scale atomic frequency reference

Chris Caudle chris at chriscaudle.org
Sat Dec 9 21:02:28 UTC 2017


On Sat, December 9, 2017 2:39 pm, Magnus Danielson wrote:
> The standard acceleration is internationally agreed at 3rd CGPM in 1901
> to be 9.80665 m/s^2.

So does that mean e.g. NIST and BIPM need to measure the acceleration at
their respective locations to within parts in 10^17 or 10^18 in order to
compare their frequency standards?
That seems not practical.
-- 
Chris Caudle





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