Re: The Rest of the Story

Keith Dysart wrote:
All the elements
of the system are completely specified in Fig 1-1 and we used
circuit theory to compute the energy flows. Not surprisingly, they
completely balanced:
Ps(t) = Prs(t) + Pg(t)

Yes, but that is only *NET* energy flow and says nothing
about component energy flow. Everything is already known
about net energy flow and there are no arguments about it
so you are wasting your time. Your equation above completely
ignores reflections which is the subject of the thread.

You object to me being satisfied with average energy flow
while you satisfy yourself with net energy flow. I don't see
one iota of conceptual difference between our two positions.

After hundreds of postings, all you have proved is that
Eugene Hecht was right when he said instantaneous powers
are "of limited utility", such that you cannot even tell
me how many joules there are in 100 watts of instantaneous
power when it is the quantity of those very joules that
are required to be conserved and not the 100 watts.

The limit in your quest for tracking instantaneous energy
is knowing the position and momentum of each individual
electron. Good luck on that one.

I am going to summarize the results of my Part 1 article
and be done with it.

In the special case presented in Part 1, there are only
two sources of power dissipation in the entire system,
the load resistor and the source resistor. None of the
reflected energy is dissipated in the load resistor
because the chosen special conditions prohibit reflections
from the source resistor. Therefore, all of the energy not
dissipated in the load resistor is dissipated in the source
resistor because there is no other source of dissipation
in the entire system. Only RL and Rs exist. Pr is not
dissipated in RL. Where is Pr dissipated? Even my ten year
old grandson can solve that problem and he's no future
rocket scientist.
--
73, Cecil http://www.w5dxp.com
.

Relevant Pages

  • Re: The Rest of the Story
    ... Cecil Moore wrote: ... but that is only *NET* energy flow and says nothing ... the load resistor and the source resistor. ... resistor because there is no other source of dissipation ...
    (rec.radio.amateur.antenna)
  • Re: The Rest of the Story
    ... but that is only *NET* energy flow and says nothing ... ignores reflections which is the subject of the thread. ... the load resistor and the source resistor. ... resistor because there is no other source of dissipation ...
    (rec.radio.amateur.antenna)
  • Re: Constructive interference in radiowave propagation
    ... energy flow involves calculating the power at various points and times in the circuit or transmission line of interest. ... in the waves do the interfering. ... Could it be that the wave reflection model is a ...
    (rec.radio.amateur.antenna)
  • Re: The Rest of the Story
    ... conservation of energy. ... You have argued that the instantaneous power dissipated ... The energy flow into the battery is exactly and always ... If the sign of the two interfering voltages are opposite, ...
    (rec.radio.amateur.antenna)
  • Re: Constructive interference in radiowave propagation
    ... I'm leery of the concept of propagating power, but most certainly negative power is the time rate of movement of energy that's going the other way. ... If we make a simple circuit of sine wave source and load where the load is anything but pure resistance, we can see that the energy goes one way for part of the cycle, the other way for the rest of half the cycle, then repeats the movement in alternate directions during the second half of the cycle. ... A real analysis of energy flow involves calculating the power at various points and times in the circuit or transmission line of interest. ...
    (rec.radio.amateur.antenna)