jim...@earthlink.net said:
> If there's nothing folks are aware of, I'll probably see if I can find  some
> nice schematic pictures of a Cs Beam, a gas cell, and an Hg ion  trap, and
> then a AVAR plot or something. 

I think the GPS satellites have 3 Cs and 2 Rbs.  There might be an 
interesting story about why they decided to split their eggs into two baskets.

-- 
These are my opinions.  I hate spam.



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