Cecil Moore wrote:

Forward power is all the power incident upon the load. Reflected power is
all the power flowing away from the load. If the load is passive, the power
flowing away from the load cannot be greater than the power flowing toward
the load.

These are nice words, but unless there is a way to compute and measure
these forward and reflected powers, they won't serve much purpose.

As you are fond of pointing out, there are only two directions on
a transmission line, so if a third term is needed to make the powers
balance, is this third term a forward power or a reflected power or
is it apportioned between forward and reflected in some unstated
way?

Without a clear definition of forward and reflected powers it is
pretty much a useless concept.

Can anyone provide a clear definition of forward and reflected
powers?
Is there a method for measuring forward and reflected powers?

And do remember, we are discussing the GENERAL case here which
includes transmission lines with complex impedances. The
(somewhat limited) utility of the concept of forward and
reflected powers is understood for the special case of
transmission lines with real impedances.

....Keith