[time-nuts] Garage built Rubidium standard

cdelect at juno.com cdelect at juno.com
Sat Jan 15 07:16:26 UTC 2011

The RB-87 isotope used in Rubidium standards is radioactive, but at such
a slight activity level that special procedures  and shielding must be
used to measure it. Any chunk of granite, including your fancy kitchen
counters, far "outshines" RB-87 as a radiation source! A garage built
Rubidium standard would be quite feasible. The hardest parts would be the
glassblowing and Rubidium filling, along with the requisite vacuum system
and buffer gas filling. Seems it would be easier to pull the cells and
lamp from some duds and start from there! The cells never wear out.

Corby Dawson 
Home Refinance 3.8% FIXED
No Hidden Fees, Easy Approvals & Better Terms-Free Quotes-3.9% APR!

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