TAI zone?

Sanjeev Gupta ghane0 at gmail.com
Thu Jun 30 12:06:38 UTC 2011

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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mm.icann.org/pipermail/tz/attachments/20110630/b8154eb8/attachment.htm>

More information about the tz mailing list