[time-nuts] Sensitivity to g in atomic clocks

Brooke Clarke brooke at pacific.net
Tue Jan 11 18:53:07 UTC 2011

Hi Antonio:

Atomic clocks don't have a sensitivity to the direction of the 
acceleration like a crystal.  That's to say a crystal has "planes" and 
the direction of the acceleration changes the crystal frequency.  See 
the plot at:
The PRS10 was rotated so different faces were sitting on the bench and 
the Electronic Frequency Control signal to the crystal oscillator were 
plotted, see:

But atomic frequency standards have a sensitivity to the magnitude of 
the gravitational field they are in.  See:
Project GREAT: General Relativity Einstein/Essen Anniversary Test
Clocks, Kids, and General Relativity on Mt Rainier

Have Fun,

Brooke Clarke

iovane at inwind.it wrote:
> While sensitivity to g is an usually specified parameter for crystal
> oscillators, I've been unable to find any indications for atomic clocks, say
> 5071A, or more modestly LPRO. Can anybody point me to any source of info on the
> subject?
> Thanks,
> Antonio I8IOV
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.

More information about the time-nuts mailing list