issues with unit package
- To: mathgroup at smc.vnet.net
- Subject: [mg88634] issues with unit package
- From: Jay Ortiz <omaha8master at yahoo.com>
- Date: Sat, 10 May 2008 06:54:10 -0400 (EDT)
Why won't Mathematica when using the Units package eliminate reciprocal units? Consider an example from E&M, finding the wavelength corresponding to a frequency:
i.e. Mathematica doesn't know that Meter/(Hertz Second) should reduce to Meter. Shouldn't this be handled?
Another example; shouldn't Mathematica reduce expressions in consistent units to a single result? Example:
In:=3 Ohm + 1 Volt/Ampere
Out = 3 Ohm + 1 Volt/Ampere
Why not 4 Ohm, or 4 Volt/Ampere? After all, the documentation entry for Ohm says it's equivalent to Volt / Ampere, so it's reasonable that Mathematica would be aware of that relationship. Doing SI or MKS on those expressions doesn't change anything.
Maybe the Units package doesn't extend to manipulating variables with quantities that have units. Am I missing something here?
Prev by Date:
Re: tablename[[x]]= xth row, how to get xth column
Next by Date:
Re: A Mathematica implementation of SolvOpt
Previous by thread:
Re: Bug in Plot?
Next by thread:
Re: issues with unit package