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'cowan@mercury.ccil.org@INTERNET@wtgw'(John Cowan)
| > Question: what is the canonical form of compound UOMs, such as:
| > - m**2 (meters squared)
| > - m/sec (meters per second)
| > - m/sec**2 (meters per second squared)
|
| Such a form can always be reduced to a fraction, with a list of numerator
| units and denominator units. If we sort the units in alphabetical order,
| then we get a canonical form for it. For example, the canonical
| form of volts is "kilogram meter meter / ampere second second second".
| Exactly how to represent this in XML I leave up to you.
It also might be worth looking into specifying the operator used in combining the
list; for the torque/work example
torque := (cross force distance)
work := (dot force distance)
which can remove that sort of ambiguity.
Pete
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