[LEAPSECS] first use of the terms UT0, UT1, and UT2

[Steve Allen]

Documents about the origin of the terms UT0, UT1 and UT2 have not been
widely available.  In the issues of Bulletin Horaire from the BIH in
1955 I have found a detailed synopsis of the IAU GA which decided
that the measurement of time should change in that fashion, and
also what I believe is the first published use of those terms.

http://www.ucolick.org/~sla/leapsecs/BH1955.html

These show the tensions between astronomers, physicists, and radio
engineers.  They provide insight into the level of understanding of
various participants and the goals they were seeking.  They also hint
at the incredulity of Nicolas Stoyko of the BIH as he got the answer
to his question "You want it when?", because the IAU resolutions from
1955 required changes by every observatory, every radio broadcast of
time signals, changes to all the computations at the BIH, and a whole
new level of rapid coordination between the International Latitude
Service and the BIH.

--
Steve Allen                    <sla at ucolick.org>              WGS-84 (GPS)
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