July 1, 2011
6:20 p.m.
Paul Koning <paul_koning@Dell.com> wrote:
It says that the active medium is cesium, but then mentions a resonant frequency that is not the one used in the definition of the second. So either the author is very confused and pulled a random number out of the air, or we're dealing with a different resonance than the standard one.
It's half the frequency of the hyperfine radiation. Tony. -- f.anthony.n.finch <dot@dotat.at> http://dotat.at/ Cromarty, Forth, Tyne: Variable, becoming north or northeast, 3 or 4. Smooth or slight, occasionally moderate in east later. Fair. Good.