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.
How a quartz watch works
An entertaining video about reclaiming lithium batteries in discarded vape pens
Big Clive, has a YouTube channel where he opens up electronic products (often dodgy ones that make fraudulent health claims) and explains what makes them work (or don't work). In this video, he shows how to open vape pens (which he often finds discarded in the street) and reuse the rechargeable lithium cells inside. READ THE REST
This video explains how AI creates its anime characters
WaifuLabs uses GANs (generative adversarial networks) to create millions of anime portraits, which can be used as avatars or game characters. They made this video and blog post that explains how GANs work. You can think of it as a pair of AIs that spar against each other in order to learn: The first AI… READ THE REST
This instructional video from 1979 will teach you how to open a door
This Finnish instructional video from 1979 will teach you how to open a door, in case you don't know. Turn on the subtitles if you need to, because this is serious business. The man in the video informs us that every third person opens a door incorrectly. There is precise art when it comes to… READ THE REST
This multi-faceted charging station does everything short of brewing your morning coffee
We thank our sponsor for making this content possible; it is not written by the editorial staff nor does it necessarily reflect its views. You've got quite the arsenal of gizmos and gadgets these days. So whether it's an extra-large monitor, your phone, or a smart home speaker, you've got a lot of stuff on your desktop.… READ THE REST
Don't paws! Get your dog in shape with this great piece of exercise equipment
We thank our sponsor for making this content possible; it is not written by the editorial staff nor does it necessarily reflect its views. It's safe to say we all love dogs. How could you not? They are cute, friendly, funny, and to put it bluntly, we just don't deserve them! So for how much joy dogs… READ THE REST
Feeling tense these days? The Lyric massage tool might help, and it's just $100 now.
We thank our sponsor for making this content possible; it is not written by the editorial staff nor does it necessarily reflect its views. Is there anything more frustrating than muscle tension and stress? Probably not. And that's why we will go to such great lengths to mitigate our tension levels, but unfortunately, sometimes it just seems like… READ THE REST
