Moin, A few years ago, in a discussion on atomic clocks, someone asked why we have to measure energy levels of atoms and their related frequencies instead of calculating the exact value and use that instead.
I just found a decent video that explains the problem in simple terms and how we get around it to get good approximations: https://www.youtube.com/watch?v=55c9wkNmfn0 (The second half of the video are unrelated Q&A) Attila Kinali -- The driving force behind research is the question: "Why?" There are things we don't understand and things we always wonder about. And that's why we do research. -- Kobayashi Makoto _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com -- To unsubscribe send an email to time-nuts-le...@lists.febo.com To unsubscribe, go to and follow the instructions there.