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On Mon, 28 Nov 2005 12:15:30 -0800, Jim Kelley
wrote: How, then, is the electric vector from the electromagnetic wave going to put these electrons in motion? That's what I was referring to. Do you understand why he would pose this question As already stated: But from experience we know that /no/ electrons can ever be caused to move without gradually establishing their own magnetic field, and this usually takes /time/. The need for time (impedance) is accommodated by the wave: It can only do so because the electromagnetic wave /also supplies a magnetic vector/ as well as an electric vector. The phase of the re-radiated signal is a function of the path length. If the path signal required the electric potential to sustain movement (no other motive force available), that would add an additional phase retardation that is not observed. Observation of what does occur is other wise described by Bailey as from experience we know.... Roy's quote comes from a nascent discussion of the topic of Reception that has a complete, later chapter devoted to it. 73's Richard Clark, KB7QHC |
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