Mark Rober wanted to demonstrate how horns work, so he built what’s quite possibly the largest air horn in the world. After explaining how horns amplify sound, he tested the horn in a remote area. It carried sound clearly from as far away as 2.5mi.
People often use the terms 4-wheel drive and all-wheel drive interchangeably, but that’s just wrong. The Team O’Neil Rally School explains how the two types of drivetrains differ. Proper 4x4s might be better at off-roading, but modern AWD systems are typically more versatile.
If you’ve ever wondered why so many areas of land are considered federal property here in the good old U.S. of A., you’ll want to tune into CGP Grey’s video, which provides a great lesson on how land went from being doled out for free to being closely held by the government.
For all of our efforts to explore space – and maybe someday colonize other planets – humans have been creating lots of space junk, which will make it harder to leave the Earth over time. Kurzgesagt explores the dangers of filling up the low Earth orbit with stuff.
Techmoan looks at the history of the DataPlay, a tiny optical disc format. Launched in 2001, it could carry up to 500MB of data in a disc just a tad bigger than a dollar coin. Unfortunately, its reliance on other companies and non-rewritable nature spelled doom for the disc.
Despite successes like Windows and Xbox, Microsoft has had its share of failures too. Business Casual looks back at how Microsoft threw billions at the mobile device market, and had a solid product, but still couldn’t keep it going against the iOS and Android juggernauts.
While roller coasters offer up plenty of thrills, a whole lot of engineering goes into making them safe enough to not snap our necks or make us pass out. TEDEd looks at the impact that these rides can have on our bodies, and how coaster safety has improved over the years.
If you’ve never seen a movie shot and played back in its original 70mm analog format, you’re missing out on a true cinematic experience. The Royal Ocean Film Society looks back at the history of this awe-inspiring format, and how it may just have saved Hollywood back in the day.
In a purely logical world, casinos and other gambling establishments would not exist, since we can easily prove that they’re losing propositions. But Wendover Productions cites studies showing how probabilities mess with our brain, and how this can be used for good.
Corridor Crew wanted to give us a better way to visualize the scale of the size of the universe. So they shrunk Earth down to the size of a tennis ball (1:190,000,000) and compared it to the planets in our Solar System, as well as some of the biggest stars in our galaxy.
If you thought that rain had a teardrop shape as it fell, you’d be totally wrong. With the help of a vertical wind tunnel, It’s Okay to Be Smart shows us what these droplets of water look like as they head towards Earth, while teaching us about surface tension and air resistance.
There are lots of different schools of thought on how playing video games can both positively and negatively affect our brains and bodies. WIRED spent some time trying to separate myth and opinion from hard science and data in this fascinating report on the subject.