On Thu, Jun 30, 2011 at 19:58, Andy Lipscomb <span dir="ltr"><<a href="mailto:AndyLipscomb@decosimo.com">AndyLipscomb@decosimo.com</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
>>The latter is more complicated, given that the orbit and rotational speed of the ball in question weren't set up with<br>
>>reference to the energy level difference between the two hyperfine levels of the ground state of the cesium-133 atom,<br>
>>and that both change over time.<br>
<br>
>*both*? Surely, sir, you jest. <br>
<br>
>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<br>
>an old mother ... <br>
<br>
Both the orbit and the rotational speed, I think he might mean...<br>
</blockquote></div><br>Aah. That makes sense.<br><br>I thought the reference was to a change in the basic constants (that the ground state was changing).<br><br clear="all">-- <br>Sanjeev Gupta<br>+65 98551208 <a href="http://www.linkedin.com/in/ghane">http://www.linkedin.com/in/ghane</a><br>
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