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On 17 Jan, 13:30, wrote:
On Jan 17, 2:13*pm, art wrote: On 17 Jan, 09:51, Cecil Moore wrote: art wrote: How can one focus so long on travelling and standing waves when the radiation portion of the subject has not been explained? If waves is the subject it cannot be discussed coherently if you cannot describe the mechanism of radiation, ... The mechanism of radiation is pretty simple from a quantum electrodynamic standpoint. Accelerated electrons emit photons. Some of the photons escape the antenna. The energy lost by the escaping photons must be replaced by the source. QED. :-) Art, if you would replace electrons with photons in your blast-off theory, you will be closer to the facts. -- 73, Cecil *http://www.w5dxp.com If it concentrated on say, a simple parallel circuit, a very simple circuit then the absolute physics of what is being discussed would be an immense help in explaining this wave discussion.ARRL states that an antenna is a simple parallel circuit Here is my civil response: For this discussion there is little benefit in using lumped component theory. The standing wave stores energy in an antenna in a manner similar to energy stored in an inductor and a capacitor in a resonant component circuit but it is not very useful to use lumped components when explaining why a standing wave cannot be used to measure delay in a coil, for example. Further questions that challenge your (and the ARRL's) simplified model: Is the resonant circuit dependent on the capacitance and inductance of the antenna or its length? If your answer is "both", (which it is), why does it happen to be both? Why does 1/4WL of the length of the antenna just happen to be a resonant point of the capacitance (in x _farads) and inductance (in y- henries) of the antenna? Why physically is that so? Nature is telling you something there. You should understand that concept well before you get to the radiation of particles (and they WILL be photons). AI4QJ but this concentration on antenna workings is blind siding every body as well as providing a means for twisting the discussion because the makings of radiation is not known. Why not illustrate waves in a simple parallel circuit so that observers can partake in this discussion which, if it ever comes to closure, could then be used to demonstrate their effect on radiation? Onlookers are more than willing to partake in the discussion but presently they are on the side lines because as presented it is limited to only those whose intent is to argue without obtaining closure and their feeding habits are insatiable as you are finding out. Best regards Art Unwin KB9MZ......XG- Hide quoted text - - Show quoted text -- Hide quoted text - - Show quoted text -- Hide quoted text - - Show quoted text - Why are you asking me all these questions? Can't you read a book? Why not ask an expert on Eham and then come back armed for an arguement. At the moment you are un armed and defenceless. By the way the money is still out there. It is not such a large amount but it will pay for lunch while you crow about proving me a liar or you could be crying about how you were dethroned instead. T'was you who made that foolish statement in the first place. Somebody stated that they had a 160M antenna on the top of their tower which isaparently is rediculous. Now a small amount of money is being mentioned and now you have second thoughts. A 160M antenna is crazy for those who believe all is known about antennas and you perceive yourself as an expert.What are you waiting for,chicken wings? |
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