Jim Kelley wrote:
As far as I know, V/I ratios don't "cause" anything.

They sometimes cause 'rho' which then becomes an end
result and not the cause of anything. At a two-port
network with reflections, rho usually cannot be calculated
from the physical impedances involved. The moral is be
careful about saying that rho causes anything. Rho may
be only the end result of everything. The s11 reflection
coefficient doesn't suffer from that characteristic.
--
73, Cecil http://www.qsl.net/w5dxp



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