How a quartz watch works
wie Sie tun, machen, Film, Beispiel
3m 34sLänge
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 tunings fork. He explains how the piezoelectric effect of quartz lies at the heart of the watch's operation.
Kommentare
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I find it hard figuring out how the frequency is measured. Anyone in here who can explain it?
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I have that same harbor freight rubber mallet.
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Wow. ....!😀
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while people still prefer inaccurate mechanical tourbillion carrousel gyroscopic things.
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your demonstration with the crystal and the light bulb is how engine knock sensors worked in late 80's on up gm engines. not sure they still use this same part on modern cars, though. when preignition occurred, the sensor detected the knock thru the crystal. it would generate a small voltage, typically between 0.1 to 0.9 tenths of a volt. the engine management computer would see this voltage, and based on the amount, retard the ignition timing to prevent spark knock. I'm retired now, but was a ASE certified master auto tech specializing in driveability and engine computer systems for my g.m dealership.
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all you gotta do now is put it in a container and then say you made a clock and you'll get tons of media attention
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my watch has gold in it
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Anyone else think he looks kind of like Mark Hamill?
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Wait, my watch has gold in it?
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Using 32k crystals that are off by typically 0.2 Hz can be corrected in software. I used to have my technician measure the actual resonance frequency with a high precision instrument, then he typed the actual frequency into my program as data. Then my program worked out the error and added it every time another resource asked for the real time. We used to squeeze 2 seconds per year performance out of a piece of junk that would drift 50 seconds a year on its own.
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Thank you, it is very well explained.
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So my $ 10 watch has gold in it!? Awesome!
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So if by the Piezoelectric effect the quarts becomes deformed when the current is applied, does that mean the quartz crystal has a limited shelf life?
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I figured if anyone had a video about this it would be you. And here we are!
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..."life forms so amazingly primitive that they still think digital watches are a pretty neat idea."
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Who knew Mark Hamill was so smart!
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Back in the 1980's and earlier, these Quartz watches were expensive. Now it costs peanuts, same as things such as Aluminum (history wise), there was a time when aluminum was worth more than Gold. Could it happen again one day? We never know what the future may hold.
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Do all of the electrical fields and currents we're exposed to in modern life affect the piezoelectric effect?
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this guy... blowing my mind ereday
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Bill Nye the science guy has been replaced..