On 29/05/2012 5:38 PM, Orchid Win7 v1 wrote:
>
> You could try using the atomic emission spectrum of caesium-133 to
> adjust the frequency of the quartz oscillator...
>

Sh*te! I forgot. I have one of those in the back shed, as well.

> For reference, the frequency of photon generated by the transition
> between the two hyper-fine ground states of a caesium-133 atom is
> *defined as* 9,192,631,770 Hz. As in, that's the current SI definition
> of what one second *is*.

*/- a minute a month will do me. Actually twice a day will do if I 
forget to wind it up. :-P

-- 
Regards
     Stephen

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