UCLA physicists demonstrated that if you pull off a piece of Scotch tape inside a vacuum chamber, the tape releases enough X-rays to image bones through skin. Grad student Juan Escobar and his colleagues managed to make an X-ray of a thumb using the technique. (Composite image, including the thumb X-ray, below.) Apparently, Russian scientists reported fifty years ago that the act of peeling sticking tape can emit X-rays, but the new research confirms the early results. The latest experiments are presented in this week's issue of the journal Nature. From Nature News:
"At some point we were a little bit scared," says Juan Escobar, a member of the research team. But he and his co-workers soon realized that the X-rays were only emitted when the kit was used in a vacuum. "We don't want to scare people from using Scotch tape in everyday life," Escobar adds.
This kind of energy release – known as triboluminescence and seen in the form of light – occurs whenever a solid (often a crystal) is crushed, rubbed or scratched. It is a long-known, if somewhat mysterious, phenomenon, seen by Francis Bacon in 1605. He noticed that scratching a lump of sugar caused it to give off light.
The leading explanation posits that when a crystal is crushed or split, the process separates opposite charges. When these charges are neutralized, they release a burst of energy in the form of light.
Sticky tape generates X-rays(Thanks, Bob Pescovitz!)
Canada’s privacy authorities on Friday said they are investigating New York-based Clearview AI over concerns the facial recognition technology may not comply with Canadian privacy law.
Ethos, the private equity firm owned by Republican billionaires that is trying to buy the rights to operate the internet’s .org domain range, said on Friday it will cap price hikes, and will agree to create an advisory board with veto powers to partly address some of the concerns of the nonprofit community.
Facebook is reportedly considering making it just a wee bit clearer that pro-Bloomberg political campaign posts come from paid staffers on Michael Bloomberg’s political campaign. Yes, 2020 is bonkers.
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Learning to ride a bike is one of those quintessential childhood experiences that’s as rewarding as it is scary. Prep your precious babe for success by starting them early with the world’s lightest balance bike, the Brilrider FLIGHT. For the uninitiated, balance bikes are no-pedal bicycles that propel forward by pushing off the ground with […]