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    What is a chronometer?
    From: Frank Reed
    Date: 2021 Sep 18, 07:19 -0700

    What is a chronometer? A chronometer is a "good" clock by some standard of accuracy and reliability, of course. OK, but what's a clock??

    This is a long-standing puzzle in physics. It's tough to define a clock. Here's a recent article on the thermodynamics and quantum mechanics of clocks that some of you may find enjoyable. It's a bit off-topic, but it will give your brain a nice work-out. Don't worry if you come away more puzzled than before you started!
    https://www.quantamagazine.org/the-new-science-of-clocks-prompts-questions-about-the-nature-of-time-20210831/

    Frank Reed

       
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