On Jun 11, 11:27*pm, Richard Clark wrote:
On Fri, 11 Jun 2010 14:29:17 -0700 (PDT), K1TTT
wrote:

you can qualify an impedance as non-dissipative

It's called reactance.

not always. there is a non-dissipative resistance. a lossless
transmission line has a pure real impedance, but no dissipation.