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Gene Fuller wrote:
In order to support his point about using phasors interchangeably with field vectors, Cecil copied and posted a figure on his website under the page name of "EHWave.jpg". For the record, I have not used field vectors at all during this discussion. Everything I have ever posted have used phasors. From the IEEE Dictionary, "E and H are the electric and magnetic field vectors in phasor notation". That is what I have been doing all along. From "Optics" by Hecht: "Therefore, its instantaneous value [for the Poynting vector] would be an impractical quantity to measure directly. This suggests that we employ an averaging procedure." Virtually every time I have used the term, "Poynting vector", I have been talking about the average value, not the instantaneous value. EHWave.JPG is a good representation of an EM traveling wave in phasor notation. If we project the fields onto the real axis, we obtain the conventional representation. -- 73, Cecil http://www.w5dxp.com |
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