The metrology of time

@article{Arias2005TheMO,
  title={The metrology of time},
  author={Elisa Felicitas Arias},
  journal={Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences},
  year={2005},
  volume={363},
  pages={2289 - 2305}
}
  • E. F. Arias
  • Published 15 September 2005
  • Physics
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Measuring time is a continuous activity, an international and restless enterprise hidden in time laboratories spread all over the planet. The Bureau International des Poids et Mesures is charged with coordinating activities for international timekeeping and it makes use of the world's capacity to produce a remarkably stable and accurate reference time-scale. Commercial atomic clocks beating the second in national laboratories can reach a stability of one part in 1014 over a 5 day averaging time… 

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