[time-nuts] Clock Calibration

Perry Sandeen sandeenpa at yahoo.com
Thu Jan 27 20:55:41 UTC 2011


I was reading some of the history of mechanical clocks and was astonished to see that one guaranteed its accuracy to 2 milliseconds per day! (And it was) Now this same clock when tested with modern equipment tested to be accurate to 200 micro-seconds per day.  Astonishing!

This got to wondering how the heck they were able to calibrate a clock to milliseconds per day back then?

And as extension to that question, how do they prove the accuracy of F1 or other similar time standards?




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