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![]() "Jim Kelley" wrote in message ... Cecil Moore wrote: I certainly do *NOT* claim there's energy in the canceled waves after they are canceled. Perhaps then you'd care to describe more fully the steady state condition wherein the canceled waves are not canceled? ac6xg now lets really have some fun with the cancelled wave and disappearing energy crowd that redirects power from here to there and sloshes it back and forth so it doesn't go anywhere. This is after all an antennas group, so lets take a real antenna. I have 2 160m verticals that are 1/2 wavelength apart over a pretty darn good ground. Now, I can feed them either in phase to get a broadside pattern, or I can feed them 180 degrees out of phase to get an end fire pattern. Everyone here should agree that this works as it has been well demonstrated over the years, and even nec predicts it so art should be happy. Now you may ask, why is this any big revelation... well, because it is a perfect example of waves that cancel but don't disappear, slosh, or get redirected anywhere. consider the case where the 2 verticals are fed 180 degrees out of phase. on a line 1/2 way in between them and perpendicular to them there is perfect cancellation of the two waves... and yet, you can move just a little bit off this line of symmetry and viola, the waves are both there and add as expected. in fact if you walk from one vertical to the other and keep on going on that line you will come to the center point where the waves perfectly cancel, then keep walking and just 1/4 wave later when you get to the next vertical, and everywhere from there on the two waves add together. Now how does that happen?? is there some kind of magical reflection field set up so that no power can cross that midpoint line?? maybe this is the first evidence of a star trek type forcefield that magically deflects phasors while still letting you see the photons?? So where does the power go??? at that mid point E=0, H=0, ExH must also be 0 at all time, and everywhere along that symmetry plane... so how can the waves add up again on the other side? quantum tunneling? art's magical levitating cosmic diamagnetic particles??? virtual photons?? oh, I forgot, these verticals are copper clad steel, doesn't the steel mess them up or something because the cosmic particles fly away? or is the thin copper enough to let them settle on an otherwise insulated slippery vertical surface?? I know what the equations say... I also know what the contest results say... the waves keep going, and going, and going... and the qso's keep coming, and coming, and coming. So lets see how well art's magical mystery antenna plays in the ultimate 160m contest this weekend... how about it art, I'm sure everyone would love to see you prove your little antenna can out play something bigger?? |
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