Opened 3 months ago

Closed 7 months ago

Last modified 3 months ago

#5788 new question

Mismatch of base units between UCUM and SI

Reported by: Simon Cox Owned by:
Priority: major Milestone:
Component: help Keywords:
Cc:

Description (last modified by Simon Cox)

The seven 'base units' in UCUM do not match the SI. See https://ucum.org/ucum.html#section-Base-Units for UCUM, and compare with https://www.bipm.org/en/measurement-units/ and select tab 'SI base units'.

Amount of substance/mole missing from UCUM base quantities/units. Plane angle is not a base quantity in SI.

I note that this deviation is discussed and justified in the UCUM spec, but it presents a barrier to advocating for the use of UCUM in the context of SI.

Change History (2)

comment:1 Changed 7 months ago by Tim Briscoe

Resolution: spam
Status: newclosed

comment:2 Changed 3 months ago by Simon Cox

Description: modified (diff)
Summary: Amount of substance/mole missing from base quantities/unitsMismatch of base units between UCUM and SI
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