How do quartz watches keep time? Steve Mould gives a great demonstration explaining how they work. Quartz is piezoelectric, which means when it is deformed it generates an electrical signal. A quartz watch has a tiny quartz tuning fork that's been calibrated to vibrate at 215 cycles per second. This signal is fed through a series of 14 flip-flop circuits, each of which divides the frequency of the signal by 2. By the time the signal goes through the 14th flip-flop, the frequency is one cycle per second.
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9:18 am Fri
May 24, 2019
How a quartz watch works
Colbert gives the reason why Trump won't stop talking about his crimes
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Learn a new language by chatting with native speakers from around the world
There are a lot of different language apps out there because nobody learns anything the same exact way – especially not something as complex as a new language. For some people, the best way is to dive in and start talking, but that’s easier said than done if you’re not around those natives you aspire […]
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Save up to 40% on these signed Marvel and Star Wars collectibles
There’s movie merch and then there are artifacts – one-of-a-kind items for the true fans only. These 11 items definitely fall into the latter category. We’ve unearthed movie art, props and other fan touchstones from the major nerd franchises of the last 50 years. Gaze upon these Star Wars and Marvel collectibles and don’t worry. […]
