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Darren New schrieb:
> clipka wrote:
>> I was indeed slightly mistaken: The original definition was for water
>> at the /melting point/, which is a bit above 0 degrees C (something
>> like 0.01 degrees C, IIRC).
>
> I think the 4C was because that's the temperature at which liquid water
> is most dense.
Not exactly: They moved to 4 degrees C because it is the temperature at
which the density is /most stable/, so the influence of getting the
temperature wrong is minimized.
(Though of course this is closely related to the fact that at 4 degrees
C water is most dense, too.)
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