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.
Veritasium visited Dr. Stephen Steiner at Aerogel Technologies in Massachusetts to learn about the wonders of silica aerogel, a solid that is only twice as dense as air. My sister gave me a small chunk of aerogel about 10 years ago and it’s one of my favorite possessions.
I have 4 or 5 beautiful great horned owls in my backyard. I see them every day. This short National Geographic video explains why owls are such great hunters: huge light-sensitive eyes, fringed wings that allow them to fly silently, and asymmetrically placed ears that picked up sounds a fraction of a second apart to […]
Some people shiver with delight at whispers and certain kinds of soft sounds. A psychologist/neuroscientist at Manchester University named Nick Davis tells Wired about the science behind these “brain orgasms.” Image: Wired/YouTube
So you cut the cord and got rid of cable? Join the steadily growing club. But while you’re out picking a streaming service, you might find one big blind spot: Local TV and sports, not to mention first-run programming from the big cable networks. Luckily, there’s a throwback way to get it for free: The […]
Even if you feel like AirPods are worth the price tag, you’ve got to admit there’s a certain anxiety that comes with using them. What if I lose them? What if they get wet in the rain? Or drenched in sweat? Or fall into the drink you dropped them into? Shiny tech is great, but […]
With the quick-fix appeal of video games and their own cell phones, it can be tough to keep kids focused on supposedly “educational” toys. And while it may seem counter-intuitive to fight tech with more tech, we’re all in when it comes to the Toybox 3D Printer. We’re not sure if anyone had envisioned a […]