Nat,
Naturally, the SI Brochure provides a bit of information on this, at
least when and how the change was implemented. See
http://www.bipm.org/en/CGPM/db/13/3/
The resolutions published in the Brochure fascinate me in the way that
the thinking of the CGPM is illuminated. It makes for a nice "history"
of the SI.
I'm sure that more information is available to those with the resources
by consulting Metrologia and documents of the Consultative Committee on
Units (CCU).
Jim
Nat Hager III wrote:
You show "degrees Kelvin" as a unit (as one of your "standard" units and
in a table below incongruously under the column head "Metric Heat
Unit"). For quite some time now it has been only "kelvin"; the "degree"
portion was dropped. Thus the triple-point of water occurs at 273.16
kelvins (273.16 K).
I have to confess to being guilty of that one, as someone who did his
dissertation in low-temperature physics many moons ago when "degrees Kelvin"
was the norm. Just curious, what's the reason for emphasizing "kelvins"
over "degrees Kelvin? It seems the latter more easily facilitates the
conversion back and forth between Celsius and Kelvin.
Nat
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