Dear Louis, Thanks for that.
By the way, do you know of any movement or gathering that was held in France in about 1304. I've seen reference to such a conference, many years ago, but unfortunately I can no longer find the original source. Thanks, Pat Naughtin CAMS Geelong, Australia on 2002-07-16 14.56, Louis JOURDAN at [EMAIL PROTECTED] wrote: > At 11:31 +1000 16/07/2002, Pat Naughtin wrote: >> 'The second is the duration of 9 192 631 770 periods of the radiation >> corresponding to the transition between the two hyperfine levels of the >> ground state of the caesium 133 atom. This definition refers to a caesium >> atom in its ground state at a temperature of 0 K.' (The International System >> of Units, BIPM 1998) > > Please note that this definition was adopted in 1967 (13th CGPM). > > Louis >
