This is the main part of an email that I sent to NIST a couple of days
ago. They will get it to the BIPM, I'm sure.
I have found what I deem to be a significant typographic error in the SI
Brochure, 9th ed., Section 5.4.5.
The example given relates to the uncertainty in the value for the mass of a
neutron. That value shows 9 digits to the right of the decimal marker followed
by (21).
The text then states that u(mn) = 0.000 000 21 × 10−27 kg but that shows only 8 digits to the right of the decimal marker. Unless I am terribly confused, the text should state u(mn) = 0.000 000 021 × 10−27 kg.
Jim Frysinger
--
James R. Frysinger
632 Stoney Point Mtn Rd
Doyle TN 38559-3030
(C) 931.212.0267
(H) 931.657.3107
(F) 931.657.3108
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