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#91
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Dave Shrader wrote:
Hey Cecil, What's this 'conservation of charge'? From _University_Physics_ 9th edition by Young and Freedman: "principle of conservation of charge: The algebraic sum of all the electric charges in any closed system is constant." Example: If one combines a proton (+1) and an electron (-1) one gets a neutron (0) which will often decay back into a proton (+1) and an electron (-1). In practice, it means that if N electrons flow into both ends of a coil during 1/2 cycle, N electrons will flow out of both ends of the same coil during the next 1/2 cycle. Thus, current flowing into both ends of a phase-reversing coil at the same time does NOT violate the conservation of charge principle when averaged over an entire cycle. -- 73, Cecil http://www.qsl.net/w5dxp -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
#92
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Wes Stewart wrote:
wrote: |Don't know how. But assuming I can learn how to do that in HTML, I'll |try to post those files tomorrow. As you can see from my home page I'm not, nor do I want to be, a web page designer. But even I know that you can just ftp your files to your web page. You don't need to create a link on a page, just tell us the file name. I do it all the time. Thanks for the tips, Wes, and it does work. The names of the .EZ files are on the .gif graphic that I prepared which illustrates the current magnitudes and phases for 3/2WL phased arrays. http://www.qsl.net/w5dxp/phasesbw.gif -- 73, Cecil, W5DXP -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
#93
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Cecil,
This has become unusually entertaining. You have declared experimentation to be unnecessary, e.g., your Diamond antenna story. You have declared math models to be unnecessary and incorrect on numerous occasions. I have worked with a lot of scientists in my career; some were experimentally biased, some were theoretically biased, and many understood that both approaches were useful. However, I do not believe I have ever encountered a "scientist" who rejected both experimental and mathematical approaches at the same time. 73, Gene W4SZ Cecil Moore wrote: snip If your math disagrees with reality, it is simply wrong and has turned into a religious belief. You are free to worship at the alter of mathematics but please don't expect the rest of us scientists to join you there. |
#94
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Cecil
Regarding inductance and computor programs and the drawings shown in your post addition May I suggest the following Since a straight line radiator contains the elements of resistance, capacitance and inductance it can also be shown as a loop radiator ( many books show it that way ) If you replace some or all of the center portion by a loop circuit it will clearly show a phase change. This method serves as a substitute for the insertion of a lumped load and changing it from a dimensionaless object to one of dimensions.that can radiate. If one shows this change it would add insight to the the drawings where inductor physical length can be portrayed. Regards Art "Cecil Moore" wrote in message ... Wes Stewart wrote: wrote: |Don't know how. But assuming I can learn how to do that in HTML, I'll |try to post those files tomorrow. As you can see from my home page I'm not, nor do I want to be, a web page designer. But even I know that you can just ftp your files to your web page. You don't need to create a link on a page, just tell us the file name. I do it all the time. Thanks for the tips, Wes, and it does work. The names of the .EZ files are on the .gif graphic that I prepared which illustrates the current magnitudes and phases for 3/2WL phased arrays. http://www.qsl.net/w5dxp/phasesbw.gif -- 73, Cecil, W5DXP -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
#95
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Gene Fuller wrote:
However, I do not believe I have ever encountered a "scientist" who rejected both experimental and mathematical approaches at the same time. Gene, experimenting with photocells to prove that day follows night would be a waste of my time. I don't reject the concept of experimenting, just experiments that waste my time for no benefit. If a math model says that day doesn't follow night, it should be rejected. A 3/4WL monopole is not a good UHF antenna. However, if the bottom 1/4WL is separated from the top 1/2WL by a phase-reversing coil, the antenna has gain over a quarterwave monopole. The Diamond antenna engineers don't care about your sacred cows. -- 73, Cecil http://www.qsl.net/w5dxp -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
#96
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Cecil Moore wrote:
Thanks for the tips, Wes, and it does work. The names of the .EZ files are on the .gif graphic that I prepared which illustrates the current magnitudes and phases for 3/2WL phased arrays. http://www.qsl.net/w5dxp/phasesbw.gif For anyone who wants to download those EZNEC files, be sure the file names are capitalized - UNIX strikes again. -- 73, Cecil http://www.qsl.net/w5dxp -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
#97
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This has become unusually entertaining.
....... snipydyduda However, I do not believe I have ever encountered a "scientist" who rejected both experimental and mathematical approaches at the same time. 73, Gene W4SZ Hey, this is getting off on the tangent, away from the original "problem". I and Barry W9UCW found, measured differences in the typical loading coil currents in order of 40 - 60%. See article and pictures on my web www.K3BU.us. W8JI and flat earth society proclaimed it can't be so. They argued and "calculated" that current at both ends of a loading coil in quarter wave loaded radiator has to be the same. W5DXP explained why the current is different, other sources and past publications affirm that. As I mentioned, time permitting, I will put together article explaining what is happening, describe experiments that can be replicated by non-believers and elaborate on the significance of the effect on the design of shortened (loaded) antennas. Nobody has argued the seven points I raised earlier, and those who measured, including W8JI found that current IS different (but still says it is NOT). The reality is that current is different, Eznec can't model it, you can speculate and theorize all you want, it will not revert the Earth to be flat. Big men will admit they were wrong, thank the enlighteners and RF life goes on. Yuri, K3BU.us |
#98
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Yuri Blanarovich wrote:
Nobody has argued the seven points I raised earlier, and those who measured, including W8JI found that current IS different (but still says it is NOT). The reality is that current is different, Eznec can't model it, ... Yuri, have you read Wes's article? Using wire segments, he modeled a loading coil in EZNEC. His segmented wire model of a coil shows a current taper through the coil. It's on his web page at: http://www.qsl.net/n7ws You can also download Wes's zipped EZNEC files. -- 73, Cecil http://www.qsl.net/w5dxp -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- |
#99
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Richard Clark wrote,
On 31 Jan 2004 02:18:33 GMT, (Tdonaly) wrote: This is vintage Moore. You were expecting chopped liver? Tom, you and Wes and.... know better. 73's Richard Clark, KB7QHC Hi Richard, yes, we do, but you can't get the monkeys to perform unless you rattle their cage. 73, Tom Donaly |
#100
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Yuri,
You are absolutely correct; this thread has drifted beyond recognition. Please note that I have never questioned your experiment or your data. I am merely commenting on the highly unscientific handwaving approach taken RRAA's most prolific "scientist". 73, Gene W4SZ Yuri Blanarovich wrote: This has become unusually entertaining. ....... snipydyduda However, I do not believe I have ever encountered a "scientist" who rejected both experimental and mathematical approaches at the same time. 73, Gene W4SZ Hey, this is getting off on the tangent, away from the original "problem". I and Barry W9UCW found, measured differences in the typical loading coil currents in order of 40 - 60%. See article and pictures on my web www.K3BU.us. W8JI and flat earth society proclaimed it can't be so. They argued and "calculated" that current at both ends of a loading coil in quarter wave loaded radiator has to be the same. W5DXP explained why the current is different, other sources and past publications affirm that. As I mentioned, time permitting, I will put together article explaining what is happening, describe experiments that can be replicated by non-believers and elaborate on the significance of the effect on the design of shortened (loaded) antennas. Nobody has argued the seven points I raised earlier, and those who measured, including W8JI found that current IS different (but still says it is NOT). The reality is that current is different, Eznec can't model it, you can speculate and theorize all you want, it will not revert the Earth to be flat. Big men will admit they were wrong, thank the enlighteners and RF life goes on. Yuri, K3BU.us |
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