
Re: Terrible unit trouble in Mathematic 9
Posted:
Dec 19, 2012 4:56 AM


Using "unit discovery" via WolframAlpha integration, if you need to, in Mathematica 9:
UnitConvert[Quantity[55, "Miles"/"Hours"],"Kilometers"/"Seconds"]
InputForm of the output is
Quantity[484/19685, "Kilometers"/"Seconds"]
but the output of the UnitConvert function displays (more or less) as:
484  km/s 19685
Of course, make the input approximate real, or apply N to the result to obtain a decimal answer.
On Dec 18, 2012, at 2:39 AM, tio540s1@gmail.com wrote:
> I continue to receive "Unable to interpret unit specification m/s" (for example, but almost anything I attempt returns this message) with input: > UnitConvert[55 mi/h,"m/s"] or UnitConvert[55 mi/h,m/s] or any other combination of quotes, omitted quotes, etc. Even the prediction/suggestion box, when I execute Quantity[55,"mi/hour"}, after it returns 55 mi/h, if I type in any combination of m/s, "m"/"s", "m/s", etc. into the box that opens when I select "Convert" in the prediction box yields the same "unable to interpret unit specification. > > What the heck????
 Murray Eisenberg murray@math.umass.edu Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 5491020 (H) University of Massachusetts 413 5452838 (W) 710 North Pleasant Street fax 413 5451801 Amherst, MA 010039305

