Hi There also are a lot of papers going back a ways by Jim Barnes and David Alan (sometimes together and sometimes separately) related to multiple clocks driving a single “estimate” of what time it actually is.
Bob > On Dec 27, 2018, at 2:34 PM, Steve Allen <s...@ucolick.org> wrote: > > On Wed 2018-12-26T10:30:24-0600 Chris Howard hath writ: >> I see the different forms of deviation measurements and they are all >> one-to-one comparisons. >> >> Is there anything to be learned from doing mass data gathering? > >> So, has this sort of thing been done? >> Why is everything one-to-one only? > > Doing this was the reason for the creation of the Bureau International > de l'Heure (BIH) a century ago. The initial announcement of their > work invited observatories around the world to participate via > correspondence sending the received times of radio time signals. > http://adsbit.harvard.edu/full/1922BuBIH...1....1. > > A few years later they presented to the 1928 General Assembly of the > IAU a complete history of timekeeping and an inventory of their > equipment including the clocks at l'Observatoire de Paris which were > located down in the catacombs to maintain stable conditions > http://adsbit.harvard.edu/full/1929BuBIH...3..255. > > The progression of issues of Bulletin Horaire shows the development of > technologies and techniques for intercomparing clocks from the age of > pendulum clocks with constant pressure cases into the age of atomic > chronometers. At the retirement of two long-time staffers they > published plots of the improvement of timekeeping from 1922 to 1964. > https://www.ucolick.org/~sla/leapsecs/annastoyko.html > > -- > Steve Allen <s...@ucolick.org> WGS-84 (GPS) > UCO/Lick Observatory--ISB 260 Natural Sciences II, Room 165 Lat +36.99855 > 1156 High Street Voice: +1 831 459 3046 Lng -122.06015 > Santa Cruz, CA 95064 http://www.ucolick.org/~sla/ Hgt +250 m > > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.