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[R] How a quartz watch works (loops.video)

submitted 1 month ago by [email protected] to c/[email protected]

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[–] [email protected] 2 points 1 month ago

That is done too. It works in both directions. What you're describing is a microphone. A quartz crystal is vibrated and it generates an electric signal. If you play that electric signal back into the crystal it reproduces the sound, aka a speaker. The design of the two change obviously to improve quality for their purpose, but if you have a headset or something with a 3.5mm jack with separate mic/speaker inputs, try plugging them in the opposite way. Your mic will start playing sound and your speaker will produce input when it hears things.