How a quartz watch works
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Description
The amazing everyday wristwatch: We never think about it, but only because engineers have made it so reliable and durable that we don't need to. At its heart lies a tiny tuning fork made of the mineral quartz. In this video Bill takes apart a cheap watch and shows extreme close-ups of the actually tuning fork. He explains how the piezoelectric effect of quartz lies at the heart of the watch's operation.