At 16:58 -0800 11/18/10, Jon Lang wrote: >If this is implemented, Duration should be an alias for something to >the effect of "Num but units<second>". Otherwise, Instant and >Duration remain unchanged. > >Thoughts?
<http://www.physics.nist.gov/cuu/Units/index.html> with special attention to: <http://www.physics.nist.gov/cuu/Units/binary.html> When a user multiplies two dimensioned quantities the result should be assigned the product of the dimensions of the factors. E = m*c**2 should acquire the dimension kg*m^2*s^-2, a joule. Comparison of that with another energy unit, like a BTU calculated from temperatures, should return an error unless some user selected add-in, which might well have a political flavor, is asked for. -- --> A fair tax is one that you pay but I don't <--
