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#1
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On Apr 16, 3:55*pm, Jim Kelley wrote:
Cecil Moore wrote: Jim Kelley wrote: So why do you have to go to all that trouble when you want to measure traveling wave current, but not when you want to measure traveling wave energy? When one measures traveling wave energy, one is measuring an average calculated scalar value usually forward power minus reflected power or RMS V*I in a dummy load resistor. Not necessarily. When one is measuring delay, one is measuring instantaneous traveling wave phase in real time. Why not just measure the delay in the instantaneous arrival of energy? That's what pulses generators are for. *Or, simply subtract the undesired wave from each measurement. *Search on the term 'Thruline' for some tips on how to measure traveling waves. Trigger on the zero crossing of the input signal and measure the delay until the output signal crosses zero. That delay measurement doesn't work for standing- wave current because the zero-crossing on the input and output occur virtually simultaneously, i.e. there is no relative phase shift between input and output or between any two points on a 1/4WL wire monopole. Flummoxed by a 'wave' which, by all accounts, does not actually exist as such - and yet according to you it can have (or can't have, depending on which post one reads) a phase shift or delay, whichever you prefer, and which (according to you) has actually been quantified (3nS) by others. It's worthy of a at least a crank.net citation if not a full article in the Journal of Irreproducible Results. *:-) The problem is that it's difficult to put much faith in the measurements you report when you so badly misunderstand and mischaracterize the measurements reported by others. *That is the only point of any of this, Art. ac6xg Jim, you were kind enough to state what the point was. Frankly that problem applies to me because my education was as a mechanical engineer and only a small interest in the electrical stuff as it appeared to be all about mathematics. What I don't understand that the argument and insults are between Americans with the same training at American colleges ( excluding Richard ofcourse who chose literature of olde England) Both sides should be able to understand what the other is saying! It has been debated in earnest for several years now and all have failed to connect.For my ideas that sort of misunderstanding is obviously my fault and I understand that but it allows Richard to jump in with a lack of knowledge but skilled in insults that are buried like a crossword puzzle and his aproach to the killing fields and which many tend to follow.Most of you are skilled engineers with a firm knowledge of radio and yet most of you talk pass each other on the technical subjects. One side or the other must have an understanding of the problem so why not display it point by point in a reasonable debate so that peace can come about? Jim, I mean no disrespect in anyway towards you and look forward to your posts but things have to change on this group or its contributions to radio will come to naught. For me a standing wave is the measurement of disparity between a closed circuit and the period of the frequency in use and nothing more, so all this other talk is beyond my ken Best regards Art |
#2
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Art Unwin wrote:
Both sides should be able to understand what the other is saying! Don't worry about it, Art. My dog doesn't understand it either. -- 73, Cecil, IEEE, OOTC, http://www.w5dxp.com |
#3
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On Apr 16, 9:48*pm, Cecil Moore wrote:
Art Unwin wrote: Both sides should be able to understand what the other is saying! Don't worry about it, Art. My dog doesn't understand it either. -- 73, Cecil, IEEE, OOTC, *http://www.w5dxp.com I don't worry about it Cecil but I am concerned at the number of people who consider themselves engineers. Remember that nobody on this group has a true understanding of Maxwells equations! Nobody has proved Maxwell's laws can be proved by adding a time varing field to the Gaussian law of Statics. In fact, it is denied by ALL on this group, Engineers? That to even try is illegal as well as not being correct! Real qualified engineers? And you want this group to understand phase change and travelling waves without the group coming to a consensus on Maxwell's laws? Especially when they demand a definition of equilibrium? Maxwell;'s laws do not include lumped loads in his equations for maximum radiation efficiency, so why do hams use lumped loads with their antennas? Maxwell;'s laws demand that for maximum efficiency equilibrium must be kept, yet hams continue to place verticals at right angles to the earth's surface. And it goes on and on. And engineers continue to misuse what is known as Maxwell's equations. However, despite that I do have a honest question Does the TOA of a dish antenna (CP) change with height similar to other polarisations? Regards Art |
#4
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![]() "Art Unwin" wrote in message ... On Apr 16, 9:48 pm, Cecil Moore wrote: I don't worry about it Cecil but I am concerned at the number of people who consider themselves engineers. Remember that nobody on this group has a true understanding of Maxwells equations! Nobody has proved Maxwell's laws can be proved by adding a time varing field to the Gaussian law of Statics. In fact, it is denied by ALL on this group, Engineers? yes art, electrical engineers, like me, do understand maxwell's equations. and any of them worth their salt will explain, like i have done many times, that it is unecessary to add an explicit time variable to the equations because they are valid at every instant of time... so you end up with f(t)=f(t) which is redundant and doesn't help with the solution of the fields and waves. you have admitted that you don't know fields and waves and that you are not an ee, yet you continue to try to put down those who show a true understanding of the equations and their underlying assumptions. you further demonstrate this by talking about lumped impedances in reference to maxwell's equations and antennas. maxwell's equations describe fields and waves, not the conductors and elements that generate them. they reference the currents and fields, not the wires, capacitors, and inductors. you can derive the properties of inductors and capacitors from maxwell's equations, but you have to look deep inside them and apply the basic laws that make up maxwell's equation to describe the lumped elements. you have yet to explain where equilibrium is required in maxwell's equations. by definition they rely on non-equilibrium conditions to set up waves. you can't have a wave while you are in equilibrium, something has to be putting energy into the system and something has to be moving, that sounds like non-equilibrium to me. |
#5
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On Apr 17, 7:07*pm, "Dave" wrote:
"Art Unwin" wrote in message ... On Apr 16, 9:48 pm, Cecil Moore wrote: I don't worry about it Cecil but I am concerned at the number of people who consider themselves engineers. Remember that nobody on this group has a true understanding of Maxwells equations! Nobody has proved Maxwell's laws can be proved by adding a time varing field to the Gaussian law of Statics. In fact, it is denied by ALL on this group, Engineers? yes art, electrical engineers, like me, do understand maxwell's equations.. and any of them worth their salt will explain, like i have done many times, that it is unecessary to add an explicit time variable to the equations because they are valid at every instant of time... so you end up with f(t)=f(t) which is redundant and doesn't help with the solution of the fields and waves. *you have admitted that you don't know fields and waves and that you are not an ee, yet you continue to try to put down those who show a true understanding of the equations and their underlying assumptions. Hello David I am comfortable that the addition of a time varying field to the laws of statics is a proof of Maxwell. In fact there are many proofs of Maxwsells equations if you read your field and waves books Chapter 2 if I recall as well as the appendix. Dr Davis also stated so and nobody was able to prove him wrong either. So as I have always said I am comfortable with the proof. you further demonstrate this by talking about lumped impedances in reference to maxwell's equations and antennas. *maxwell's equations describe fields and waves, not the conductors and elements that generate them. *they reference the currents and fields, not the wires, capacitors, and inductors. you can derive the properties of inductors and capacitors from maxwell's equations, but you have to look deep inside them and apply the basic laws that make up maxwell's equation to describe the lumped elements. Well again I disagree with you. Maxwells laws as far as we are concerned deals with radiation and maximum efficiency with the basic of equilibrium. As Newton used the term it was a cosmic law as is all his laws thus equilibrium or balance is based on the cosmic which includes outside Earths sphere, a basic for every action and reaction statement. When you introduce a lumped load into radiation without the equal and opposite you have violated Maxwell and Newtons laws, very simple. This is why Maxwell does not include a metric for lumped loads when calculating maximum efficiency via the boundary method. Now as far as waves are concerned science recognises that radiation presents observations that suggest waves but none of these are proven and I believe that particles dominate which if you go along with statics laws is also another proof. you have yet to explain where equilibrium is required in maxwell's equations. *by definition they rely on non-equilibrium conditions to set up waves. *you can't have a wave while you are in equilibrium, something has to be putting energy into the system and something has to be moving, that sounds like non-equilibrium to me. Not so, review the gyroscope action and the sedgewick vehicle all of which rely on balanced circulating rotation within the cosmos. But disregard all the things above that you cannot digest. Use a computer program on antennas that has the option to change human input so that the laws of Maxwell are fiollowed implicity. You put in a vertical design and request maximum gain using the parameters supplied by Maxwell which requires cosmic balance or equilibrium. Antenna computer programs will always put aside the planar design as it lacks equilibrium and will replace it with a tipped vertical antenna. So David you have now put your feet into another puzzle by your falure to digest science. Science and the patent office accept antenna computer programs output which is opposite to your thinking so now you are surrounded by a morass because you denied the good Doctors knowledge of physics. I accept that that you and others do not have a good understanding of equilibrium which generates faults in all associated science problems so our minds will never meet. If you delve into books on Maxwell you will eventually fall upon the use of Gauss. Since there are so many proofs available authors shun from showing the Gaussian connection because of the different metrics involved not because it is not a viable proof. You have a simple option to prove what is correct, use a antenna program with an optimiser and determine what a vertical antenna looks like when seeking maximum efficiency, believe me the radiator will be tipped. So forget every thing else and show the World why computer programs produce faulty results when using your logic. With the use of my logic I have produced a antenna for top band that is rotatable and directional so something I have done is correct and computer programs based on Maxwell produce the same results. Go figure. Now with respect to a dish antenna with CP. Can the dish supply a lower TOA than a planar design at the same height? Regards Art. Ps Mechanical engineering requires adherence to equilibrium, it is not just a electrical thing.I also know little regarding fields and waves but I am profficient in the application of fields operating at the speed of light and their impact on particles for communication and where impact requires mass. |
#6
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![]() "Art Unwin" wrote in message ... On Apr 17, 7:07 pm, "Dave" wrote: Well again I disagree with you. Maxwells laws as far as we are concerned deals with radiation and maximum efficiency with the basic of equilibrium. Maxwell's equations say nothing of efficiency. Nor do they mention equilibrium. Not so, review the gyroscope action and the sedgewick vehicle all of which rely on balanced circulating rotation within the cosmos. you like your mechanics... best to stick with them, you don't understand fields and waves at all. Science and the patent office accept antenna computer programs output the patent office accepts designs for faster than light antennas also. that doesn't prove that there is any science behind them at all. If you delve into books on Maxwell you will eventually fall upon the use of Gauss. Gauss is basic to the Maxwell equations, as i pointed out by it being used within the first few pages of Jackson. believe me the radiator will be tipped. only as far as your brain has tipped. something I have done is correct and computer programs based on Maxwell produce the same results. right, next you'll be rewriting the bible. Ps Mechanical engineering requires adherence to equilibrium if a mechanical system is in equilibrium how much work does it do? |
#7
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On Apr 18, 10:30*am, "Dave" wrote:
"Art Unwin" wrote in message ... On Apr 17, 7:07 pm, "Dave" wrote: Well again I disagree with you. Maxwells laws as far as we are concerned deals with radiation and maximum efficiency with the basic of equilibrium. Maxwell's equations say nothing of efficiency. *Nor do they mention equilibrium. Not so, review the gyroscope action and the sedgewick vehicle all of which rely on balanced circulating rotation within the cosmos. you like your mechanics... best to stick with them, you don't understand fields and waves at all. Science and the patent office accept antenna computer programs output the patent office accepts designs for faster than light antennas also. *that doesn't prove that there is any science behind them at all. If you delve into books on Maxwell you will eventually fall upon the use of Gauss. Gauss is basic to the Maxwell equations, as i pointed out by it being used within the first few pages of Jackson. I suppose that Gauss has a law that is basic to Maxwells laws but certainly not his law of statics. That particular law is two dimension which does not include time. Another scientist supplied to him a similar law that was also two dimensional and it was that law provided the clue which required clarification such that the two dimensional findings had to be added to to match the metrics of equilibrium as required by Newton. If Newton had not required uniformity of metrics it is quite possible his laws would not have been corrected until the discovery by Foucault which Maxwell had deduced or predicted as being present before Foucault was born. That force was determined as being the weak force by me which is required for the grand unification theory (GUT) which unites all the sciences of nature which includes the electricity matter which you have boxed as being isolated from classical physics as we know it. Frankly David, you have over estimated your value as a engineer by your neglect of physics Regards Art believe me the radiator will be tipped. only as far as your brain has tipped. something I have done is correct and computer programs based on Maxwell produce the same results. right, next you'll be rewriting the bible. Ps Mechanical engineering requires adherence to equilibrium if a mechanical system is in equilibrium how much work does it do? |
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