We can now measure long distances with truly mindboggling precision.
Take this work, by Jian-Wei Pan and colleagues, which uses lasers to measure more than 100 kilometres to within a thousandth of the width of a human hair 🤯
https://www.newscientist.com/article/2463645-laser-technique-measures-vast-distances-with-nanometre-precision/
Take this work, by Jian-Wei Pan and colleagues, which uses lasers to measure more than 100 kilometres to within a thousandth of the width of a human hair 🤯
https://www.newscientist.com/article/2463645-laser-technique-measures-vast-distances-with-nanometre-precision/
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