Opened 23 months ago

Last modified 21 months ago

#174 new enhancement

Planck time

Reported by: coxs Owned by: christof
Priority: minor Milestone:
Component: Keywords: time units

Change History (2)

comment:1 Changed 21 months ago by christof

  • Owner set to christof

Planck units (with base units length, mass, time, charge, temperature) can be regarded as derived units in the SI system. More specific, they can be derived solely using the universal physical constants, albeit this involves a fractional exponent (which is not currently supported in UCUM expressions).

I would like to learn more about the use case to add this as a unit here. Potentially, it could serve as a consistency cross check for the values of the universal constants (because the five physical constants take on the numerical value of 1 when expressed in terms of these units)?

I suggest to first shed some more light on the use of different systems of quantities (ISQ and others) in the context of informatics and UCUM.

comment:2 Changed 21 months ago by gschadow

Could you elaborate on the fractional exponent issue please? We recently resolved the only previously known fractional exponent issue (see: #147).

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