Living in a modern age, we’re constantly surrounded by all sorts of tech. We’re so used to it, that we don’t even notice how ingeniously designed it really is. And there a lot of small mysteries: Why does a keyboard have legs? How does my phone vibrate? Why does…
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Certain crystals, like quartz will produce a voltage when hit. It's all to do with the arrangement of atoms and charge in the lattice. It's used in lots of things like piezo lighters, sensors, speakers and oscillators for timekeeping.
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