In Horology vibration is the term used for the displacement of the oscillating weight. Each oscillation is separated into two vibrations and generates the ticking sound of the watch. At a frequency of 2.5 Hz in a mechanical watch, the balance typically carries out five vibrations per second, or 18,000 per hour.
A watch with a more precise movement may have a frequency vibration of 5Hz, that is the balance carries out ten vibrations per second.
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