From The Action Lab: In this video I elaborate on why a slinky floats in mid-air as the top of the slinky falls towards it. I show you how the center of gravity falls as expected once the slinky is dropped with a ball dropping at the center of gravity. Then I show you that […]
From Nick Uhas: I’ve done this reaction many times before. I did it for the Today show, America’s Got Talent, and a ton of live shows. So I’m pretty familiar with it, to say the least. And after our Elephant toothpaste experiment, I started thinking about other things we could do with the lifeguard tower […]
If you stick water in the freezer, it will take a few hours to freeze into ice. How is it, then, that cold packs go from room temperature to near freezing in mere seconds? John Pollard details the chemistry of the cold pack, shedding light on the concepts of energetics and entropy along the way. […]
66 million years ago, maybe on a Tuesday afternoon, life was the same as it had been the day before or a thousand years before or pretty much a million years before. Things were good for our feathered dinosaur buddies. Until a tiny, tiny detail in the sky changed. [In a Nutshell]
NASA’s Perseverance Mars rover used its Mastcam-Z imaging system to capture this 360-degree panorama of “Van Zyl Overlook,” where the rover was parked as the Ingenuity helicopter performed its first flights. The 2.4 billion-pixel panorama is made up of 992 individual images stitched together. The images were taken between April 15 and 26, 2021, or […]
Here is what happens with you bounce a ball on one of the world’s bounciest surfaces. And yes, you can easily do this at home! Watch the video to find out how! [Action Lab Shorts]
From Action Lab Shorts: I shoot a nerf gun backwards out the back of a car at the same speed the car is moving forward. [Action Lab Shorts | Via BIS]
The UK government’s space program began in 1952, and has always emphasized unmanned flight, mainly to launch satellites. But decades earlier, there was a private entity called the British Interplanetary Society that advocated for manned space travel. In the 1940s, they even produced a space suit for intrepid travelers to wear while collecting moon rocks! […]
From TED Education: The genre of dystopia – the ‘not good place’– has captured the imaginations of artists and audiences alike for centuries. But why do we bother with all this pessimism? Alex Gendler explains how dystopias act as cautionary tales – not about some particular government or technology, but the very idea that humanity […]
Most of us have experienced food poisoning, but with 31 unique species of bacteria, viruses, and parasites as common culprits, it’s hard to know exactly what it is. [SciShow]