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A comment on NIST Ion Clock Sets New Record for Most Accurate Clock in the World.

Re:NIST Ion Clock Sets New Record for Most Accurate Clock in... by renlo on Tuesday July 15, 2025 @07:51PM (#44577182)
as a layman, wouldn't you need a more-accurate clock to measure the accuracy of a clock? How is clock accuracy measured when the clock is the most accurate clock?
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Re:NIST Ion Clock Sets New Record for Most Accurate Clock in... by hoseja on Wednesday July 16, 2025 @05:40AM (#44580404)
Well for example you can take several of the clocks and compare them.
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Re:NIST Ion Clock Sets New Record for Most Accurate Clock in... by CoastalCoder on Wednesday July 16, 2025 @02:22PM (#44585343)
Would that require the assumption that any inaccuracies affecting multiple clocks are uncorrelated with each other?
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