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Question:

What is the reactivity of Quartz?

I'm doing a mineral project and it's asking for the reactivity of quartz, an dI have no idea what that means.Thanks! :D

Answer:

None of these. The stability and accuracy of a quartz watch depends on a quartz oscillator, which is controlled by the dimensions of a piece of quartz, which are quite stable with time and temperature. The better ones use temperature compensation. The best have the quartz oscillator in a temperature controlled oven. But this has little to do with frequency. High frequency quartz oscillators are used because they are small in size. A mechanical watch uses either a pendulum, which also is very accurate, or an escapement and balance wheel, which has several sources of error, too complicated to go into here. The error varies, and the best mechanical systems are equal to the best quartz types, but that gets into lots of dollars.
2, 3 and 4 are false, leaving 1 as the best answer. If by more accurate higher resolution is meant, then quartz crystals win hands down against an escapement mechanism because the crystal oscillates at a far higher frequency. That allows you to use a counting circuit that shows many more decimal digits than would be possible with an escapement that runs at say 1Hz. A quartz crystal in a wrist watch oscillates typically around 32kHz (more precisely, 2^15Hz).

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