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Standing morphing to travelling waves, and other stupid notions
Cecil Moore wrote:
... There are a host of applications that simply cannot be dummied down to the lumped circuit level. I am unable to teach my dog to look at the clock and tell whether it is dinnertime or not. Is that my fault or hers? The answer is more complicated than one might think at first glance. Well, sure. But you are bragging about the intelligence of your dog--you are not likely to find that in a ng--often. ROFLOL Regards, JS |
Standing morphing to travelling waves, and other stupid notions
Gene Fuller wrote:
Therefore, your proof that my "Incorrect" assertion is incorrect is itself incorrect. Please answer the question. It is known that Re(ExH*)/2 = 0 for pure standing waves all up and down the line. If E and H* are both non-zero, how can Re(ExH*)/2 be zero? -- 73, Cecil http://www.w5dxp.com |
Standing morphing to travelling waves, and other stupid notions
Gene Fuller wrote:
Cecil Moore wrote: The E-field and H-field of an EM wave can certainly be represented as an exponential function when the EM wave is normal to the reference plane. Think about it. Hecht used that feature in his book. Totally ducking the issue, as usual. No, I'm waiting for an answer from you. It is known that Re(ExH*)/2=0 for pure standing waves all up and down the line. Since E and H* are not zero all up and down the line, how is that possible? -- 73, Cecil http://www.w5dxp.com |
Standing morphing to travelling waves, and other stupid notions
art wrote:
You have called me a liar and a fool but are not willing to raise a few thousand dollars to prove that I do not have a 160M antenna on the top of my tower, that I am a fool and a liar Money is waiting for you and your backers just by y showing I do not have a 160M antenna sitting on my tower. You have some gall to call me names and then backslide when asked to prove your point. No, I am not going to insult you, your own actions show what manner of man you are. Art Unwin...KB9MZ....xg(uk) Art, I've asked you to provide information on your 160m antenna twice previously. You referred me to an eham tower of babel after the first and responded something about not operating on 160 for the second. I'll ask you for the third time: Would you explain your 160m antenna for us? Do you believe it to be as good or better than a full-sized inverted L over an extensive radial field? Have I wasted time, effort and money in installing my inverted L when an 18 foot antenna would have done the same job? Dave K8MN |
Standing morphing to travelling waves, and other stupid notions
On 17 Jan, 20:43, Dave Heil wrote:
art wrote: You have called me a liar and a fool but are not willing to raise a few thousand dollars to prove that I do not have a 160M antenna on the top of my tower, that I am a fool and a liar Money is waiting for you and your backers just by y showing I do not have a 160M antenna sitting on my tower. You have some gall to call me names and then backslide when asked to prove your point. No, I am not going to insult you, your own actions show what manner of man you are. Art Unwin...KB9MZ....xg(uk) Art, I've asked you to provide information on your 160m antenna twice previously. *You referred me to an eham tower of babel after the first and responded something about not operating on 160 for the second. I'll ask you for the third time: *Would you explain your 160m antenna for us? *Do you believe it to be as good or better than a full-sized inverted L over an extensive radial field? *Have I wasted time, effort and money in installing my inverted L when an 18 foot antenna would have done the same job? Dave K8MN Dave, Over the years many have asked that same question and I have answered it many times. When ever a newbie comes along they always ask the same question without looking back at my past posts since they want to argue. Now it is you who is starting the post with a caustic comment regarding the "tower of Babel" but at no time have you or any newbie initiated a discussion before making a insult to follow the crowd. What do you think I should do when you call my writing "babel"? Now the computor programs state that a tilted element provides more horizontal gain than a horizontal element. This was followed up independently on this newsgroup.No debate regarding the coroberation So should we all dump the antenna computor programs? Many hams say they did this or did that and produced better than sliced bread. Hams respond that you didn't measure on the range properly so give me the math. I started off with the math which was corroberated by a doctor working for a space agency. Guess what? He got plastered for "poor" mathematics. This group cannot debate any thing which is why only a few dominate the group now. Past experts have left!So I ask you"how should this group be run"? Art |
Standing morphing to travelling waves, and other stupid notions
Gene Fuller wrote:
The phasor has nothing to do with spatial direction of the field vector. Sorry, but The IEEE Dictionary disagrees with you. In the description of the Poynting vector, it says: "E and H are the electric and magnetic field vectors in phasor notation ..." I have prepared a graph of a snapshot in time of a forward wave and reflected wave of equal magnitudes. When the waves are superposed at the reference plane, the total E-field and total H-field are 180 degrees out of phase. The graph is at: http://www.w5dxp.com/EHSuper.JPG -- 73, Cecil http://www.w5dxp.com |
Standing morphing to travelling waves, and other stupid notions
On 17 Jan, 20:44, "AI4QJ" wrote:
"art" wrote in message ... On 17 Jan, 18:25, "AI4QJ" wrote: "art" wrote in message ... your whole posting is just silly. First you accuse me of lieing now you want to provoke me with stupidity. You need to upgrade to a understanding of a tank circuit.Yes, it is used in your transmitter. Google it and study it. Free speech is great but it also reveals your mentality. And you are just bull ****ing in the absence of knoweledge." OK art, I notice a great improvement in your having only 3 spelling errors in 5 sentences. You are a fool. If your postings could ever be elevated to the level of mere stupidity, then it might be possible to correct your misconceptions. However, one cannot deal with true insanity by any rational approach such as that. You do not drive me to use Google; you drive me to dictionary.com so I can find the words appropriate to describe the idiocy of your ravings. However, it isn't worth the effort so I will leave you mired in your intellectual wasteland, reading your postings from time to time for the entertainment value of comic relief. For the sake of the hobby I will continue point out the fairy-tale nature of your postings lest the casual reader of this newsgroup ever get the wrong impression of what the typical ham radio operator thinks is antenna "theory". AI4QJ :No, I am not going to insult you, I'm sure you have had you fill of hurling insults at me tonite. Just part of the entertainment. :your own actions show what manner of: :man you are. Pot Kettle Black Tell me how a 1/4W tank circuit in my transmitter works, art. AI4QJ- Hide quoted text - - Show quoted text - You have one in your transmitter and you don't know how it works so you ask me. Why? You can ask KB9..... or the MI5. If you cross post they will get back to you. I promise.They miss you. Maybe one of the above is actually you! |
Standing morphing to travelling waves, and other stupid notions
art wrote:
... Dave, Over the years many have asked that same question and I have answered it many times. Yeah Art, I have notice the exact same thing. I think he is one of those "special people." Most likely, took "special classes" when he was in school. We should probable just ignore this fact--indeed, we should, most likely, just ignore him ... When ever a newbie comes along they always ask the same question without looking back at my past posts since they want to argue. Now it is you who is starting the post with a caustic comment regarding the "tower of Babel" but at no time have you or any newbie initiated a discussion before making a insult to follow the crowd. What do you think I should do when you call my writing "babel"? Now the computor programs state that a tilted element provides more horizontal gain than a horizontal element. This was followed up independently on this newsgroup.No debate regarding the coroberation So should we all dump the antenna computor programs? Many hams say they did this or did that and produced better than sliced bread. Hams respond that you didn't measure on the range properly so give me the math. I started off with the math which was corroberated by a doctor working for a space agency. Guess what? He got plastered for "poor" mathematics. This group cannot debate any thing which is why only a few dominate the group now. Past experts have left!So I ask you"how should this group be run"? Art Yes, but all that is probably just a factor/side-effect of the special classes he which he was "initiated" with. You'd be better looking for more "intellectual fields" to plant your ideas in ... Warm regards, JS |
Standing morphing to travelling waves, and other stupid notions
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? |
Energy and Work
On Wed, 16 Jan 2008 10:17:44 -0800, Richard Clark
wrote: Feynman is not generally available, but he is certainly held by many of those stumbling over the terms of their own invention. Thanks for the response, Richard. I had consulted Feynman's Volumes I and II prior to posting and saw nothing there to support the idea that an EM wave performs work in moving through a region of free space. Hence, my original post. 73, Chuck NT3G ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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