Quartz watches are one of the little marvels of our age, the kind of thing you have around you at all times but don’t realize, and rely on without knowing it. I had a vague idea of how they worked (quartz crystal, current, resonance), but this video by The Engineer Guy goes into a little more detail and mentions a few things that are truly interesting.
A little while back he took apart a vintage black box from an airliner. I think I like this guy.
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