Perhaps it is not a good analogy, but I think of the cesium beam tube in the 5071A. The plans alone are very non-trivial. Then there are a bunch of proprietary machining details that I can't disclose, that are way beyond the merely having access to a CNC tool. The systematic error due to the CBT is below something like 1 part in 10^14, which is 1 second in 3 million years. Perhaps that is in some sense equivalent to Harrison's 1 second in 0.3 years. 7 orders of magnitude difference. As many time-nuts are probably aware of, most if not all cesium clocks that are better than the 5071A have reversible beams to cancel out CBT assymmetry.
Rick Karlquist N6RK _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
