F-ckin Leap Seconds, how do they work?

Tue Jul 3 23:15:09 UTC 2012

Vadim Antonov <avg at kotovnik.com> wrote:
>
> But in theory, if you can get the technical wrinkles worked out, you can
> derive the same frequency standard in your lab with a single instrument.
>
> (One more issue is that non-relativistic time is not only the frequency of
> oscillators, but also a reference point).

Your parenthetical point explains why TAI does not tick at the same rate
as the SI second in your lab, expecially if your lab is (for example) in
Colorado. You have to adjust the frequency depending on your difference in
gravitational potential from the geoid.

Tony.
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