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Cecil, WHAT is your hangup about "lumped-circuit"?? W8JI-Tom, Tom
Donaly, Ian White, Roy Lewallen, Gene Fuller, Reg Edwards, I, and others I can think of are NOT, repeat NOT, absolutely NOT, most definitely NOT, talking about a lumped-circuit model. A lumped-circuit model in general does NOT (repeat all the above emphasis) talk about individual charge carriers, and individual charge carriers are NOT required to talk about all the things we've been saying. Egad, man. I will repeat, Maxwell et al were working to explain the forces acting on charge, and the response of charge to those forces: the motion of charge, the acceleration of charge, the accumulation of charge. Fields, both electric and magnetic, are simply a mathematical and useful way to represent the forces caused by all charges (in motion, accelerated, at rest) on all other charges in the universe. Sometimes fields as developed in classical electrodynamics fail to accurately represent our observed reality, but they are still useful in describing a great many of our everyday observations, and in solving many--essentially all--of our everyday antenna problems. I won't say it didn't happen at all, but I certainly can't recall in any of these "discussions" getting down to considering individual charged particles. We're dealing with effects accurately represented by charge expressed as a continuum, distributed over space, with abrupt boundaries at the edges of conductors assuming the forces aren't great enough to rip free charge loose from the wires and form corona. We are dealing with quanta in such overwhelmingly great numbers and such small energy per quanta that there's no point in discussing them as quantized charge or photons. No, we're dealing with a linear system that's sufficiently accurately represented by a set of differential equations that all get back eventually to the interaction of a continuous distribution of charge, not a "lumped circuit" OR individual charged particles, which are themselves very different thing, even though we know that our distribution of charge is made up of such particles when viewed on a fine enough scale. So, PLEASE wake up and quit trying to attribute this "lumped circuit" stuff, and the completely independent charge quantization stuff, to this discussion. It simply is NOT there. It is absolutely NOT the point of all this. Cheers, Tom Cecil wrote in a posting whose Usenet ID is available on request, K7ITM wrote: Understanding the congrence among many methods/theories is a very nice thing, for it gives one confidence that they are correct, and the ability to apply the one that's most convenient to any particular problem. I would not want to take away wave theory, or any other valid theory, from you; I would only ask that you better understand that your pet is not the ONLY valid explanation. The point is that in any disagreement between the lumped-circuit model and a properly applied distributed network model, the lumped-circuit model loses *EVERY* time since the lumped-circuit model is a *SUBSET* of the distributed network model. If your current charge concepts disagree with Maxwell's equations, Maxwell's equations win *EVERY* time. Maxwell's equations do not require individual charge carriers. They work just fine considering only fields in the aether. -- 73, Cecil http://www.qsl.net/w5dxp |
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