Christof Gessner

To the outside world your "arbitrary unit" is just a number. And I do not advocate adding the prefix mechanism to be used in such a case. There is no...

OK. This is an example of using a customary _scale_ to measure (or calculate) the _volumetric mass density_ of materials. The **rules to convert to and from SI units** `mg/L`,...

As explained in https://github.com/ucum-org/ucum/issues/174#issuecomment-2727254573 this a case involving a dimensionless quantity and that might be better expressed using a code for the _measurement_ and not with a code for the...

Good discussion, it touches on some basic principles. Just to remind everyone: There is no problem in using `{degAPI_60}` and `{degAPI_15}` in curly braces as a valid UCUM code. It...

I think I understand your request. I will try to express it in different words: There is a measurement where it is "not feasible to express the results as a...

Not an expert in ophtalmology, I understand that these measurement values represent numerical (dimensionless) values on a log scale, associated with a somewhat standardized measurement setting. See e. g. https://en.m.wikipedia.org/wiki/LogMAR_chart...

Hello, thanks for the question. After a quick investigation of the topic I found a text that explains some of the challenges when trying to quantify and compare chemoluminescence measurements:...

I suggest to use the codes as reference ids. Of course, everyone can (and maybe should) create their own private primary keys for the purpose of organizing their database, in...

According to https://ucum.org/docs/formal-grammar simple-unit may also be DIGITS.

Beyond that, this is a good example why UCUM codes should NOT be used as display values directly: What would the uninformed user understand, when we display "5+2" ?!