Opened 5 years ago
Last modified 5 years ago
#174 new enhancement
Planck time
| Reported by: | Simon Cox | Owned by: | Christof Gessner |
|---|---|---|---|
| Priority: | minor | Milestone: | |
| Component: | Keywords: | time units | |
| Cc: |
Description
5.39116 x 10-44 s http://physics.nist.gov/cgi-bin/cuu/Value?plkt
Change History (2)
comment:1 Changed 5 years ago by
| Owner: | set to Christof Gessner |
|---|
comment:2 Changed 5 years ago by
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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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.