TAI zone?

[Sanjeev Gupta]

On Thu, Jun 30, 2011 at 19:58, Andy Lipscomb <AndyLipscomb at decosimo.com>wrote:

> >>The latter is more complicated, given that the orbit and rotational speed
> of the ball in question weren't set up with
> >>reference to the energy level difference between the two hyperfine levels
> of the ground state of the cesium-133 atom,
> >>and that both change over time.
>
> >*both*?  Surely, sir, you jest.
>
> >I have a Cs atom calibrated by BIPM, preserved in a bottle of snake oil,
> which it breaks my heart to sell, but I have
> >an old mother ...
>
> Both the orbit and the rotational speed, I think he might mean...
>

Aah.  That makes sense.

I thought the reference was to a change in the basic constants (that the
ground state was changing).

-- 
Sanjeev Gupta
+65 98551208     http://www.linkedin.com/in/ghane
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