Hi!
I am a particle physicists, so I'm interested in using the Wikidata project in order to keep physical constants, like the mass or lifetime of the neutron, in sync between different articles. In this use case it will be important to have not only the possibility to store and retrieve the value of this constant, together with the reference to the data source, but also the uncertainty. Would it be possible to include a special data type for such constants where the value, the total uncertainty and the unit of measurement can be stored together with the reference (the additional storage of statistical and systematic uncertainty would be nice, but not necessary).
Best regards, Alexander