Those without a copy of SI 10 might not see the context in which the
dalton is listed. It is in the same table (Table A.1) as the denier and
the foot poundal. In no way, does SI 10 provide any support for its
usage. It does, however, provide a conversion to kilograms (without
even mentioning the unified atomic mass unit).
The unified atomic mass unit, by contrast, is listed in Table 6--"Units
in use with the SI". That unit has a footnote symbol but neither the
line in the table nor the footnote mention the dalton. The footnote
provides the definition in terms of carbon 12.
The words below, "dalton is a special name for the unified atomic mass
unit", are correct (at least to chemists), but not found anywhere that
I know of in SI 10. So, someone seeing "dalton" in a journal article
could learn its size from SI 10, but would not necessarily catch this
association.
Jim
On Friday 13 July 2001 2225, [EMAIL PROTECTED] wrote:
> Refer to 14346
> SI 10 lists the dalton on page 24.
> dalton is a special name for the unified atomic mass unit.
> see page 7.
> 1 u = 1.660 540 2(10) x 10^(-27) kg
> Robert Bushnell
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