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.
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9:51 am Mon
Nov 12, 2018
How to make something that's darker than Vantablack
See the magic of a Tesla Valve
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.
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"Softbody Tetris": what if tetronimoes were made of jello?
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Save over 50% on this slim battery case for your iPhone 11 Pro Max
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