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Where does it go? (mismatched power)
On 18 jun, 16:02, Cecil Moore wrote:
On Jun 18, 1:28*pm, K1TTT wrote: Do you agree that wave reflection can cause a redistribution of wave energy? no. *wave reflection causes current and voltage waves to change direction, magnitude, and phase. The question asked by the original poster is, exactly what happens to the reflected energy? Optical physicists know that a reversal of energy flow direction accompanies the change in direction of the E- field and the B-field which changes the direction of the ExB Poynting vector, i.e. changes the "direction and momentum" of the EM wave according to Eugene Hecht. How can you not know that a voltage/current wave requires energy? How can the voltage and current change direction without the energy changing direction? Does supernatural intervention separate the voltage and current from the ExH energy? Maybe you should reference, "Fields and Waves ...", by Ramo and Whinnery where they describe the forward and reflected power-density Poynting vectors. Do you agree that superposition can cause a redistribution of wave energy? your observed 'redistribution of wave energy' is a results of superposition of current and voltage waves and then another calculation to convert the sum to power and another calculation to integrate the energy. Is that a yes or no answer? The same thing happens with light waves in free space where voltage and current are completely irrelevant. Do you agree that wave reflection and wave superposition are two different mechanisms? of course, i've never said otherwise. You sure implied otherwise. Why did you argue with me when I said they are two different mechanisms in action to redistribute energy, (1) reflection and (2) superposition? You said superposition is not the second mechanism. -- 73, Cecil, w5dxp.com "-Do you agree that wave reflection can cause a redistribution of wave energy?-" "-No. wave reflection causes current and voltage waves to change direction, magnitude, and phase.-" You see? Babel curse...! One ask about energy other answer with current, voltage, etc. (same thing divided in pieces). Do you agree cars have engines?, ¡Of course not! ¡cars have crankshaft, cylinder, piston, rods...! Thus you are never going to reach an agreement |
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