Reply to post: Re: So we've gone from six to five

Holy moley! The amp, kelvin and kilogram will never be the same again

bombastic bob Silver badge
Devil

Re: So we've gone from six to five

apparently, a kibble balance can be used to measure Planck's constant.

https://en.wikipedia.org/wiki/Kibble_balance

Also I'd think it would require a VERY accurate definition of 'Ampere'.

And if any two SI standards are recursively/mutually dependent (because of measurement techniques, etc.), could a converging solution be used to make them as accurate as possible?

(I'd really hate for our measurement standards to end up as one big Catch 22 or chicken/egg paradox)

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