Constants vs Units

[lfoppiano]

I had a close encounter with μB, the Boron Magneton (https://en.wikipedia.org/wiki/Bohr_magneton) constant...

I'm wondering whether we should actually distinguish them in our lexicon:

1. having a flag saying it's a constant,
2. having the different way to express them, like for this case the SI or Gaussian CGS units

Any though?

[lfoppiano]

I'm ended up again in this issue for the same problem :-)

Should I annotate μB as unit and that's it?

@kermitt2 any advice?

[kermitt2]

Yes it's not very clear from the discussions/guidelinee:

https://grobid-quantities.readthedocs.io/en/latest/guidelines.html#special-cases

#37

For speed of light c we have the value type (speed) and it is expressed as unit. So I would say it's the same case?

[lfoppiano]

OK. Thanks! I will review the guidelines on this regards, and add more examples.

[lfoppiano]

I'm wondering, having µB tagged as <base> isn't it going to mess up with the prefix recognition?
Maybe we could have an additional dictionary for constants? Does it make sense?