Question

how do natural vibration for occur in modern watches or clocks?​

Answer 1

Answer:

Feeding electricity into quartz makes it vibrate (or, if you prefer, oscillate or resonate) through what's sometimes called the reverse piezoelectric effect (where electricity produces vibrations). The oscillator is set up so the quartz vibrates exactly 32768 times a second.

Explanation:

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Answer 2

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Far better for time-keeping is the natural and exact vibration an in enzared atom