In 2 new papers researchers report the development of an atomic clock that would be off by just one second after 4 trillion years, the universe is only 13.8 billion years old. When they raised this new clock up by a distance of only 1 millimeter they could measure the increase in clock speed due to it being one millimeter further from the Earth center and thus in a weaker gravitational field, and this change in clock speed agreed entirely with Einstein's general relativity.
Resolving the gravitational redshift within a millimeter atomic sample <https://arxiv.org/abs/2109.12238> High precision differential clock comparisons with a multiplexed optical lattice clock <https://arxiv.org/abs/2109.12237> John K Clark See what's on my new list at Extropolis <https://groups.google.com/g/extropolis> -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAJPayv129%3DDywFEdVt5XXdcFZiFhTTqLgKpfmGhvJq%3DTtfQkhA%40mail.gmail.com.
