Alexander M. Nicholson was an American scientist, most notable for inventing the first crystal oscillator, using a piece of Rochelle salt in 1917 while working at Bell Telephone Laboratories. He then filed a patent the next year.[1] His priority was later disputed by Walter Guyton Cady who invented the first quartz crystal oscillator in 1921.[2]

References

  1. ^ Nicholson, Alexander M. Generating and transmitting electric currents U.S. patent 2,212,845, filed April 10, 1918, granted August 27, 1940
  2. ^ Hackman, Christine; Sullivan, Donald B. (26 August 1994). "Resource Letter: TFM-1: Time and frequency measurement" (PDF). Time and Frequency Division. National Institute of Standards and Technology, Boulder, Colorado 80303: 1–2. Retrieved 5 January 2016.


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