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Why is quartz good for working watches and other electronic machines?

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Quartz is a piezoelectric material. This means that it vibrates when current is passed through it. It also means that when it is vibrated or put under pressure, it generates current. When current is passed through a quartz element, it vibrates, which in turn puts some current back into the circuit. This creates a feedback look that creates a waveform in the electrical signal; this wave can then be used as a clock by using electronic components to measure the number of wave cycles that have passed. This means that quartz is an integral part of any timing circuit, and timing is important for watches, computers, and anything that requires coordination between different parts.
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