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#11
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skin depth (eddy current/Foucault currentO)
Art Unwin wrote:
... Have all the antenna computer programmers also died or do they have a quiet distrust of their work with respect to Maxwell ? Now we have the relevalation that Neutrinos DO actually have mass obtained frtom the Sun which puts another nail in the coffin with respect to waves. Yes, American Universities deserve their failing grade.( Read Asimov thoughts on present science teaching) NEXT engineer scientist/rocket engineer or what ever Art Unwin KB9MZ....,..,.xg (uk) Actually, no, general programmers fill the planet, competition for work is high ... well, perhaps better in china, india, etc. :-( However, programmers "don't much" appreciate programs which play horseshoes. We like EXACT answers, exact measurements and routines which CONSISTENTLY return EXACT figures, dimensions, etc. ... in true math there is but one answer, artists see things in gray, programmers in black and white. When a program says, "Well, you start here, with this measurement, and prune, or lengthen", or, "You start with this capacitance (or inductance) and then adjust as necessary", I feel ill. Example: IF Pi X 3 = circumference ever fails (I expect it to be just as accurate for a 1 inch circle as a 1 million mile one), or returns a "figure to begin experimenting from", I will see it as only a guess also ... and requiring an artist to deduce. Antenna design parameters are a nightmare ... indeed, since that which is not a science is an art--antenna design looks very much an art to me .... or, at least mixed fields of discipline are required. Now, one Art should recognize another art ... grin And, I am done with this whole discussion, someday we will have accurate tools to work with ... end of story. Regards, JS |
#12
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skin depth (eddy current/Foucault currentO)
JP wrote:
Skin depth and what cause it: http://en.wikipedia.org/wiki/Skin_depth The Wikipedia treatment is not incorrect, but it may create a false impression that the skin effect is limited to some particular type or cross-section of conductor. There is a more general derivation by Davidson that has far fewer restrictions about the assumed geometry. There is a scanned copy at: http://www.ifwtech.co.uk/g3sek/misc/skin.htm Davidson shows much more clearly that the existence of a skin effect does not depend on any particular shape or size of conductor, or any particular type of electrical circuit. If RF current is flowing in a conductor - regardless of the reason - then the skin effect will be present. That is a very powerful conclusion. Because we know the skin effect will be present, it helps us to trace the RF current pathways on complex shapes such as coaxial cables and shielded loops. -- 73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek |
#13
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skin depth (eddy current/Foucault currentO)
"Art Unwin" wrote in message ... On Dec 5, 8:09 pm, John Smith wrote: I know of nobody familiar with the present antenna programs who can explain the addition of the "'Weak force" that creats arrays in equilibrium without a hint of parallelism or planar construction. Have all the antenna computer programmers also died or do they have a quiet distrust of their work with respect to Maxwell ? nope, us programmers are perfectly happy, you on the other hand should completely distrust any computer program modelling antennas out there... NONE of them include the weak force, therefore they should not be trusted to model your magical equilibrium antennas. you must go off and find a different way to calculate your antenna patterns that does include the weak force. Now we have the relevalation that Neutrinos DO actually have mass obtained frtom the Sun which puts another nail in the coffin with respect to waves. the only place that has been revealed is to your in your delusional dreams. go publish that in a peer reviewed scientific journal and see how many cups of coffee it gets you. |
#14
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skin depth (eddy current/Foucault currentO)
On Dec 6, 2:38*am, Ian White GM3SEK wrote:
JP wrote: Skin depth and what cause it: http://en.wikipedia.org/wiki/Skin_depth The Wikipedia treatment is not incorrect, but it may create a false impression that the skin effect is limited to some particular type or cross-section of conductor. There is a more general derivation by Davidson that has far fewer restrictions about the assumed geometry. There is a scanned copy at:http://www.ifwtech.co.uk/g3sek/misc/skin.htm Davidson shows much more clearly that the existence of a skin effect does not depend on any particular shape or size of conductor, or any particular type of electrical circuit. If RF current is flowing in a conductor - regardless of the reason - then the skin effect will be present. That is a very powerful conclusion. Because we know the skin effect will be present, it helps us to trace the RF current pathways on complex shapes such as coaxial cables and shielded loops. -- 73 from Ian GM3SEK * * * * 'In Practice' columnist for RadCom (RSGB)http://www.ifwtech.co.uk/g3sek Thank you very much for the addition supplied. I never really understood why hams could not accept this From my point oif view the beauty of the Foulcalt or eddy current is without this "pealing" on the chemical adhesion effect that a particle has on a diamagnetic surface the ejected particle would be without spin, and as such would not be able to have straight line projection within a gravitational field, a necessity for radiation. Any book on wave guides will picture this eddy current on the inside walls and any book on non destructive testing will also corroberate its presence and yet it is still rejected by this group. When Maxwell inserted the required units to achieve equilibrium per Newton it was the mathematics that forcast the presence of a levitation force that would not be identified for several decades but stil ignored because of the dominance of wave theory. Cheers Art |
#15
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skin depth (eddy current/Foucault currentO)
On Dec 6, 6:31*am, "Dave" wrote:
"Art Unwin" wrote in message ... On Dec 5, 8:09 pm, John Smith wrote: I know of nobody familiar with the present antenna programs who can explain the addition of the "'Weak force" that creats arrays in equilibrium without a hint of parallelism or planar construction. Have all the antenna computer programmers also died or do they *have a quiet distrust of their work with respect to Maxwell ? nope, us programmers are perfectly happy, you on the other hand should completely distrust any computer program modelling antennas out there... NONE of them include the weak force, therefore they should not be trusted to model your magical equilibrium antennas. *you must go off and find a different way to calculate your antenna patterns that does include the weak force. Now we have the relevalation that Neutrinos DO actually have mass obtained frtom the Sun which puts another nail in the coffin with respect to waves. the only place that has been revealed is to your in your delusional dreams. go publish that in a peer reviewed scientific journal and see how many cups of coffee it gets you. No Siree, it has been several years that the idea of Neutrinos without mass was squashed. Two years ago it was again confirmed in experiments in Batavia, Illinois. And ofcourse it gives CERN its impetus for their current experiments in Switzerland Pull yourself together David As for publishing academics require a reference lists of quotes from other members of academia and are loath to challenge prior papers and academics. Thus to be published you must stay on the same track as others with no going back for solid review. History shows that papers supplied by non members of academia will never be accepted in their life time. That is why I say papers should be open source and open to challenge from those outside academia. Art |
#16
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skin depth (eddy current/Foucault currentO)
"Art Unwin" wrote in message ... That is why I say papers should be open source and open to challenge from those outside academia. go challenge anything you want... it sounds like you don't want or need to reference any current papers since your theory goes against everything that is accepted, so just publish away. you have a web site, put something on there that is testable and see if anyone can prove it. or better yet, apply for another patent with something useful and see if anyone buys it. your magical levitating weak force neutrinos make for a good laugh now and then, but are otherwise total fantasy until you can show the equations... and not a single reputable publication will accept a paper from you without those equations. |
#17
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skin depth (eddy current/Foucault currentO)
"Art Unwin" wrote
Thank you very much for the addition supplied. I never really understood why hams could not accept this. _______ Not just hams, Art. Skin depth applies to a-c energy flowing along a conductor. The same principles of physics apply no matter to which end of a conductor that a-c is applied. That is, the a-c energy reflected from the unterminated end of a conductor will travel on its outside for the same reason it traveled on the outside of that conductor when first applied to it, at its other end. Fractional wavelength conductors and your "equilibrium" are irrelevant to this. The center conductor of rigid coaxial transmission line used in the broadcast industry is hollow, because it can carry the same amount of a-c energy as it could if it was solid (and costs/weighs a lot less). RF |
#18
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skin depth (eddy current/Foucault currentO)
Art wrote:
"When Maxwell inserted the required units to acheive equilibrium per Newton it was the mathematics that forcast the presence of a levitation force that would not be identified for several decades but still ignored because of the dominance of wave theory." Maxwell found his equations had the form of those predicting behavior of water waves and they correctly predicted the velocity of light as previously determined. Maxwell was a mathematician and a physicist who searched for things with practical applications. In one of Maxwell`s lectures he said: "Now, Professor Graham Bell, the inventor of the telephone, is not an electrician who found out how to make a tin plate speak, but a speaker, who to gain his private ends, has become an electrician." Maxwell`s equations are adequate to solve all questions of radio waves at once in place of a multitude of their predecessors. Art even agrees they work as a basis for antenna programs in computers however he spells computer. Using the tried and proven until something better comes along is common sense. From what i`ve seen, wave theory works well for large scale predictions while the particle theory seems to work at the atomic scale. Too bad Cern had an instantaneous multimillion dollar breakdown. A.G. Bell produced the most valuable patent in history. What are the results of the Unwin patents? Best regards, Richard Harrison, KB5WZI |
#19
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skin depth (eddy current/Foucault currentO)
Art wrote:
"So what exactly forces a time varying current to take an alternate route of travel from the center of the conductor when the resistance is so low compared to other routes that could be taken?" Opposing ac current is total impedance, not just resistance. The deepest fibers in a conductor are encircled by the largest number magnetic flux linkages. These create a reactance which generates a counter-emf opposing an imposed current. The deeper the depth inside a conductor, the greater the opposition to the imposed current. Look for "skin effect" in any edition of Terman and you will find diagrams illustrating the various magnetic flux paths inside the conductor which cause skin effect. Best regards, Richard Harrison, KB5WZI |
#20
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skin depth (eddy current/Foucault currentO)
On Dec 9, 12:53*pm, (Richard Harrison)
wrote: Art wrote: "When Maxwell inserted the required units to acheive equilibrium per Newton it was the mathematics that forcast the presence of a levitation force that would not be identified for several decades but still ignored because of the dominance of wave theory." Maxwell found his equations had the form of those predicting behavior of water waves and they correctly predicted the velocity of light as previously determined. Maxwell was a mathematician and a physicist who searched for things with practical applications. In one of Maxwell`s lectures he said: "Now, Professor Graham Bell, the inventor of the telephone, is not an electrician who found out how to make a tin plate speak, but a speaker, who to gain his private ends, has become an electrician." Maxwell`s equations are adequate to solve all questions of radio waves at once in place of a multitude of their predecessors. Art even agrees they work as a basis for antenna programs in computers however he spells computer. Using the tried and proven until something better comes along is common sense. From what i`ve seen, wave theory works well for large scale predictions while the particle theory seems to work at the atomic scale. Too bad Cern had an instantaneous multimillion dollar breakdown. A.G. Bell produced the most valuable patent in history. What are the results of the Unwin patents? Best regards, Richard Harrison, KB5WZI * * |
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