[time-nuts] Rubidium standard

[paul swed]

I might indeed believe the glass absorbs it. That might have been what I had
seen when trying to repair some of the lpro type rbs.
Thanks

On Mon, Nov 23, 2009 at 4:10 PM, Mike S <mikes at flatsurface.com> wrote:

> At 03:24 PM 11/23/2009, Poul-Henning Kamp wrote...
>
>  There are no "rubidium crystals" involved.
>>
>
> Next you'll try and tell us that you can't make a clock run backwards by
> using dilithium crystals, and making it warp time.
>
> My understanding is that the Rb gets absorbed into the glass envelope, so
> that eventually there isn't enough to provide proper operation. Rb isn't
> that expensive (you can buy 1 g for $100 at retail -
> http://elementsales.com/pl_element_grp1.htm ), so I'm not clear on why
> they don't just put more than ~0.001 g in to begin with.
>
> www.spectratime.com/product_downloads/life_mtbf.pdf
>
> _______________________________________________
> 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.
>