Will Kinney: "One of the most underappreciated things about relativity IMO is that faster than light communication -- classically at least -- is perfectly possible if it is done in a medium."
https://twitter.com/WKCosmo/status/1491756023790583808
Correct, but this topples Einstein's relativity, doesn't it?
"For generations, physicists believed there is nothing faster than light moving through a vacuum -- a speed of 186,000 miles per second. But in an experiment in Princeton, N.J., physicists sent a pulse of laser light through cesium vapor so quickly that
it left the chamber before it had even finished entering. The pulse traveled 310 times the distance it would have covered if the chamber had contained a vacuum. Researchers say it is the most convincing demonstration yet that the speed of light --
supposedly an ironclad rule of nature -- can be pushed beyond known boundaries, at least under certain laboratory circumstances. [...] The results of the work by Wang, Alexander Kuzmich and Arthur Dogariu were published in Thursday's issue of the journal
Nature."
https://www.cbsnews.com/news/faster-than-the-speed-of-light/
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Pentcho Valev
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