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Atomic Clocks

  • Robert WynandsEmail author
Chapter
Part of the Lecture Notes in Physics book series (LNP, volume 789)

Abstract

Time is a strange thing. On the one hand it is arguably the most inaccessible physical phenomenon of all: both in that it is impossible to manipulate or modify—for all we know—and in that even after thousands of years mankind’s philosophers still have not found a fully satisfying way to understand it. On the other hand, no other quantity can be measured with greater precision. Today’s atomic clocks allow us to reproduce the length of the second as the SI unit of time with an uncertainty of a few parts in 1016—orders of magnitude better than any other quantity. In a sense, one can say [1]

Keywords

Atomic Clock Microwave Cavity Coherent Population Trapping Optical Clock Clock Transition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  1. 1.Physikalisch-Technische BundesanstaltBraunschweigGermany

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