Hi I suspect that at the practical level, you define standard atmospheric pressure, standard gravity, standard magnetic field ….. and on down the list. At some point “sea level” becomes a redundant expression.
Bob > On Dec 9, 2017, at 2:14 PM, Mark Sims <hol...@hotmail.com> wrote: > > In the standards definitions that include "at sea level", the question these > days is "which sea level?". As ocean temperature changes sea level will > change (except maybe in Washington DC). Will the standards be amended to > include something like "at sea level in 1990" or will the value being defined > drift around with the changing sea level? > _______________________________________________ > 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. _______________________________________________ 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.
