[LEAPSECS] Notation for transmitted vs. paper time scales

Poul-Henning Kamp phk at phk.freebsd.dk
Thu Nov 6 02:52:52 EST 2014

In message <545AC54A.10403 at cox.net>, Greg Hennessy writes:

>I'd hate to get in Poul's slandering of astronomers, but if
>you are trying to measure UT1, it still takes time to correlate
>the VLBI data and reduce it, and then send the results
>to the right people, which doesn't happen without delay. (pardon
>the pun). Synching up cesiums, hydrogen masers, and rubidium
>fountains can happen much faster than it used to of course.

*Any* feedback loop has a delay.

It also takes time to process the GPS or twoway measurements,
even if only a fraction of a second.

But today the "paper" is used ti signify things which needlessly
takes weeks and months.

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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