Vantablack is a pigment made from carbon that is so black that anything painted with it looks like a hole in reality. It absorbs 99.965% of visible light. The Action Lab Man made something even blacker than Vantablack, then shines lights and lasers onto it to see if it visibly reflects the light. He uses marks made with a black Sharpie and a paint called Black 2 (which absorbs 95% of visible light) to compare how well his black square absorbs light. There's a surprising reveal at the end.
In 1920, the great Nikola Tesla patented this ingenious valve that allows fluid or gas to flow in one direction but not the other. And it does it based entirely on its geometry without any moving parts. Here is the US patent, number 1,329,559.
C4D4U's SOFTBODY TETRIS V16 is (as the name implies), the latest in a series of "softbody" simulations of Tetris, in which the tetronimoes are rubbery, jelly-like solids that glisten as they wobble into place. It's an incredibly soothing thing to watch (C4D4U calls them "ASMR for my eyes") and part of a wider genre of […]
Concerned about your eyesight? You probably should be. And we’re not just talking about seniors here. Young or old, we’re all at risk of coming down with vision issues Most of us might get a vision test only once every couple of years or so when we get a new pair of glasses – if […]
We love our smartphones and tablets, but we also love to write. For a while now, there hasn’t been a workable solution. Either hook it up to a keyboard (which defeats the purpose of a portable gadget) or resign ourselves to typing on tiny, unresponsive glass icons. Looks like technology has finally caught up to […]
So you’ve got an iPhone 11 Pro Max. It’s an impressive piece of hardware – sometimes, too impressive. The more you’re compelled to use it, the more an age-old problem pops up: The dreaded low battery warning. Even if you’re on the go, perhaps the best solution to this is also pretty unobtrusive. It’s the […]