[time-nuts] Surplus Guidelines, was: Rubidium Standard

Poul-Henning Kamp phk at phk.freebsd.dk
Sun Dec 10 16:01:26 EST 2006


In message <D891702134D46242B089F044A1C20CD1025DA3 at deuterium.delien.local>, =?iso-8859-1?Q?Rob
ert_Deli=EBn?= writes:
>> > What is the blacken from, the rubidium itself?
>> 
>> Yes, the rubidium enters the glass and that blackens it.
>
>Isn't it deposited metal from the filament that blackens the glass? 

No.

Therei is no filament.  The Rubidium lamps are excited with a UHF
field which is external to the bulb.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.



More information about the time-nuts mailing list