Dave wrote:
"Cecil Moore" wrote:
Would you agree it is indirectly measuring joules/sec
not watts/sec? That would be energy flow.

actually, its not measure energy or power, its measuring voltage and current
and presenting you with the result of a calculation that represents power.

Like I said, it is indirectly measuring power -
by sampling the voltage and current at a fixed
point in a known Z0 environment and performing
some in-phase and out-of-phase phasor additions.

The point is that it is displaying watts at a
*fixed* point, i.e. average joules flowing past
a fixed point in one second. It is the joules
that are flowing, not the watts.
--
73, Cecil http://www.w5dxp.com