Invented by Nikola Tesla, this ingenious type of valve uses a series of teardrop-shaped channels to restrict the flow of gases going one direction, by allowing smooth flow the other direction. NightHawkInLight built one such valve and demonstrates how it works by igniting propane gas flowing through it.
It’s been a while since we heard from YouTuber brusspup, but he’s back, and this time he’s showing off nine kinds of desktop toys, each of which shows off some interesting aspect of physics. We owned at least a few of these as kids, but there are definitely some unique ones here too.
If you live somewhere that snow coats roads in the wintertime, you’ll want to check out Engineering Explained’s latest clip, as Jason walks us through the variables at work when driving on slippery surfaces, and provides some tips on how to maintain control on the snow.
Right alongside gravity, friction is one of the most important physical forces at play in the universe. Without it, some very strange and dangerous things would happen. The What If channel ponders what sort of madness might happen if we lost friction for even a minute.
If you’ve ever played with one of those drinking bird toys, you know it can be quite fascinating to watch as it dunks its beak in and out of a glass of water. Engineerguy Bill Hammack pops off the bird’s festive blue hat to explain the thermodynamics which make the nearly endless fun happen.
While jet engines do have the ability to reverse their thrust to slow down, or even taxi backwards, it’s not possible for an airplane to do the same in the sky. Bright Side provides a layperson’s explanation of the physics and safety issues that prevent this from happening.
This unique accent lamp shows off the physics of standing waves, persistence of vision, and stroboscopic effects. By spinning a string at varying speeds, and illuminating it with colorful LEDs, a variety of cool sine waves emerge, with preset effects like northern lights, volcano, eclipse, carnival, and more.
Whether you love the flat-plane V8 grunt of a Shelby GT350, the snaps and crackles of a Jaguar F-Type, the whirr of a Porsche 911, or the brapp of a Mazda RX-7, every car makes a different sound. But as Donut Media explains, it’s way more than the pipes and mufflers that make a car’s exhaust note sound the way it does.
Game developer Dennis Gustafsson is working on a voxel-based engine that features incredible environmental destruction physics. While the video posted by Bluedrake42 is lacking in gameplay, to see how the world reacts to damage is one of the holy grails of gaming we’ve been promised and has yet to be delivered.
Want to keep neighborhood rugrats off your lawn? Minutephysics and Randall Munroe of xkcd have got you covered, with their step-by-step plan for installing a moat filled with molten hot lava. Sadly, it would cost about $60,000 a day to keep it running unless you dig down deep enough and power it with geothermal energy.
If you ever had to explain the Earth’s timekeeping method to an alien civilization, you might find it challenging. As Minute Physics explains, what we call a day isn’t exactly what most of us think. For a more detailed explanation, the What Is a Day interactive lab is worth checking out.
You never want to get too close to a mound of fire ants. But from the comfortable distance of your browser, they’re neat little buggers. Vox explores some of the fascinating ways in which colonies stick together to form structures, and how they can act as both a solid or fluid.
On the surface, the power to see through anything seems like a pretty useful superhero ability. But as What If explains, not only would you need an X-ray emitting sidekick to take advantage of your power, but your viewing subjects would probably end up getting cancer unless they wore safety aprons.
xkcd creator Randall Munroe’s latest book offers solutions to real-world problems. But don’t expect to get advice you can actually use. Instead, you’ll receive overly-complicated and impractical methods, in what he calls “world’s least useful self-help book.” Drops 9/3/19.
The Engineer Guy explains how droplets form. It happens when fluid is allowed to drip such that it takes a form with the smallest surface area – a sphere. By vibrating the fluid’s container, one can control how fast droplets form. This knowledge is used in printing, painting, and even medical applications.
Ever wonder why the sound echoes in an enclosed room? This 2013 clip from Acoustic Geometry, demonstrates some of the key principles of direct and reflected sounds using a combination of NERF disc guns, moiré patterns, and more than 1100 feet of fluorescent string.
You’d think that bouncing on a trampoline while it’s being driven down the road would be a bad idea. You’d probably be right, but at least the guys from the Dunking Devils Squad have physics on their side as the forward momentum of both the trampoline and jumpers keep them in sync.
The man we know as Vsauce Michael of the channel formerly known as DONG is shows off a nifty plaything. Designed by Pacific Puzzle Works, this oversize top conceals a smaller top inside that automagically spins when you spin the larger top. Available as a kit or fully-assembled.