The evolution of the quartz crystal clock

@article{Marrison1948TheEO,
  title={The evolution of the quartz crystal clock},
  author={W. A. Marrison},
  journal={Bell Syst. Tech. J.},
  year={1948},
  volume={27},
  pages={510-588}
}
  • W. A. Marrison
  • Published 1 July 1948
  • Engineering, Computer Science
  • Bell Syst. Tech. J.
Some of the earliest documents in human history relate to man's interest in timekeeping. This interest arose partly because of his curiosity about the visible world around him, and partly because the art of time measurement became an increasingly important part of living as the need for cooperation between the members of expanding groups increased. There are still in existence devices believed to have been made by the Egyptians six thousand years ago for the purpose of telling time from the… 
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In this paper, a new quartz-crystal plate, designated the GT, is described which produces a very constant frequency over a wide temperature range. This crystal does not change by more than one part
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