"Johnathan McClure" wrote on 2002-10-09 04:37 UTC: > Since the second can be determined to such precision I suppose it would > be -- but how do you measure out 1 / 299 792 458 th of it to a similar > precision?
A well-designed caesium maser (the heart of an "atomic clock") has by definition a frequency of exactly 9192631770 Hz. Look up in any electronics textbook what a "phase-locked loop" is to understand how to convert that particular frequency into any other frequency. Markus -- Markus G. Kuhn, Computer Laboratory, University of Cambridge, UK Email: mkuhn at acm.org, WWW: <http://www.cl.cam.ac.uk/~mgk25/>
