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Nessun titolo diapositiva

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Title: Nessun titolo diapositiva Author: Elisabetta Melli Last modified by: jmiles Created Date: 9/30/2002 2:00:50 PM Document presentation format – PowerPoint PPT presentation

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Title: Nessun titolo diapositiva


1
CCTF CONSULTATIVE COMMITTEE FOR TIME AND
FREQUENCY REPORT FOR THE XXII CONFÉRENCE
GÉNÉRALE DES POIDS ET MESURES Paris, 8-13 October
2003
Sigfrido Leschiutta CCTF Chairman
2
XXII CGPM CCTF REPORT
  • the second
  • frequency standards
  • the hour
  • time scales
  • global clock comparisons
  • how compare the clocks of the NMIs
  • clocks and frequency standards
  • uses in Science and Technology
  • joint activity CCL-CCTF
  • toward future secondary optical definition
    of the second

3
the best atomic clocks
caesium fountains
4
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6
SYRTE-FO2 FRANCE
7
NIST-F1 USA
8
PTB-CSF1 GERMANY
9
IEN-CSF1 ITALY
10
38 countries participating into
TAI Poland Israel Thailand Australia Portugal
Spain Austria Norway Hong-Kong China Lithuan
ia U.K. Switzerland Japan Sweden Mexico Roman
ia Slovakia Germany USA India Italy Bulgaria
Canada Argentina Singapore Russian
Federation Czeck Republic Korea, Rep. of Chinese
Taipei Turkey South Africa New
Zealand France The Netherlands Belgium Brazil C
hile 53 laboratories participating into TAI
11
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12
XXII CGPM CCTF REPORT
  • clocks and frequency standards
  • uses in Science and Technology
  • fundamental research and fundamental constants
  • metrological applications, outside time
  • telecommunications
  • satellite navigation systems

13
XXII CGPM CCTF REPORT
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