TAI zone?

Andy Lipscomb AndyLipscomb at decosimo.com
Thu Jun 30 11:58:11 UTC 2011

>>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...

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