List: time-nuts@lists.febo.com
From: Peter Vince
Exact Rubidium frequency
Sat, Jun 30, 2007 11:11 PM
On the (USA) NIST web-page
(http://tf.nist.gov/general/enc-re.htm#rubidiumoscillator) they quote
6,834,682,608 Hz, but the (German) PTB (on
http://www.ptb.de/en/org/4/44/441/info2_e.htm) give 6,384,682,612.8
Hz, and the (British) NPL quotes 6,834,682,610.904 324 Hz in a
powerpoint presentation
http://www.npl.co.uk/time/club/meeting1/secondaryrepsec.pdf