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#1
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#2
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On Dec 1, 9:25*am, Lostgallifreyan wrote:
Art Unwin wrote in news:15904250-69bb-4aba-8a3f- : If you go back to the arbitary boundary of the Gaussian law of statics and view it as a Faraday shield it all becomes quite simple. If one adds a time varying field you have the duplicate of Maxwells laws for radiation, *where the outside of the boundary is the radiator. The Faraday shield supplies the transition from a static to a dynamic field for xmission and the reverse action *for receiving. Very basic my dear Watson, and a vindication that particles and not waves create radiation which puts it in line with deductions when other methods are applied. Doesn't look basic, and I suspect it never will to me. The only thing I can get from this is the idea that a particle model will do what the wave one does, which isn't surprising but I've been told that particle based models are usually best left to situations (usually atomic scale quantum mechanical) where the wave model won't do, and I've never seen anyone suggest that wave-based theories of electromagnetics were inadequate (or inefficient) for scales involving obviously large numbers of particles. The other explanations seemed to grip, but not this one. I'll leave well alone now, but if anyone else takes up the discussion, I'll read it and only comment if I can't stop myself.. Yep, that's about right. In fact, my advice if you do get into that situation (where quantization of energy is important), is to NOT think of particles or waves, but realize that quanta of electromagnetic radiation behave exactly as they behave, which is neither exactly like waves nor exactly like particles. One of Richard Feynman's physics lectures covered what I think is a lovely example of this: how you can NOT explain the results of the experiment he sets up, using EITHER wave OR particle behaviour. I highly recommend it, to arm yourself against people who get into the particle-vs-wave battle. I believe it's the sixth of what has been published as Feynman's "Six Easy Pieces." Cheers, Tom |
#3
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#4
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On Dec 3, 12:25*am, Lostgallifreyan wrote:
( Richard Feynman lectures) ... I don't know if he's written anything a layman can easily work through, that doesn't come with lots of maths without which accompanying text doesn't help much, but if he has I'll try to read it. I think one of the key things that made his physics lectures popular is that they were delivered without a whole lot of math. You could get into that if you wanted, but you could also get a lot out of just listening to the _ideas_. If you drop me an email, perhaps I can send you a bit more about this particular lecture... Cheers, Tom |
#5
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On Dec 3, 6:52*pm, K7ITM wrote:
On Dec 3, 12:25*am, Lostgallifreyan wrote: ( *Richard Feynman lectures) ... I don't know if he's written anything a layman can easily work through, that doesn't come with lots of maths without which accompanying text doesn't help much, but if he has I'll try to read it. I think one of the key things that made his physics lectures popular is that they were delivered without a whole lot of math. *You could get into that if you wanted, but you could also get a lot out of just listening to the _ideas_. If you drop me an email, perhaps I can send you a bit more about this particular lecture... Cheers, Tom That is oh so true! The masters started with an observation of an occurence and not from a rendering of mathematics. With more observations it became natural to align the Universe via mathematics which, as with a jig saw puzzle, fits together nicely., It would seem today that scientists today are using mathematics via a computer to churn out bundles of equations leaving the operator to think of an observation that would fit the math. Of course, mathematics provide imaginary answers similar to a quadratic equation that finish up as multiple of false leads and deductions which eventually requires the multiple use of constants to provide a semblance of understanding of what has been provided. |
#6
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#7
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On Dec 1, 11:25*am, Lostgallifreyan wrote:
Art Unwin wrote in news:15904250-69bb-4aba-8a3f- : If you go back to the arbitary boundary of the Gaussian law of statics and view it as a Faraday shield it all becomes quite simple. If one adds a time varying field you have the duplicate of Maxwells laws for radiation, *where the outside of the boundary is the radiator. The Faraday shield supplies the transition from a static to a dynamic field for xmission and the reverse action *for receiving. Very basic my dear Watson, and a vindication that particles and not waves create radiation which puts it in line with deductions when other methods are applied. Doesn't look basic, and I suspect it never will to me. The only thing I can get from this is the idea that a particle model will do what the wave one does, which isn't surprising but I've been told that particle based models are usually best left to situations (usually atomic scale quantum mechanical) where the wave model won't do, and I've never seen anyone suggest that wave-based theories of electromagnetics were inadequate (or inefficient) for scales involving obviously large numbers of particles. The other explanations seemed to grip, but not this one. I'll leave well alone now, but if anyone else takes up the discussion, I'll read it and only comment if I can't stop myself.. Well I didn't tell all in the first place because so much untruths are buried in people"s mind. When the charge or particle hits the outside of the shield both the electric and magnetic fields dissapate leaving just the static particle adheared to the outside. Ofcourse non bound particles in the air are immediatly attracted to the inside of the shield and move along the inside of the shield to align themselves with the outside static particles for equilibrium. Now for the important stuff that will upset hams. The internal particle moves to align itself with the outside particle. By moving it generates a time varying current such that the electric and magnetic fields that disapated on the outside are now REGENERATED on the inside. Most people see or think that the outside magnetic field can pierce the shield, which is why the name magnetic loop came about. Fields do NOT penetrate a Faraday shield. A electromagnetic shield is regenerated by the newly formed internal current which then closes the circuit. To put this with the original explanation would be to much for hams to digest so it is best to split it into two parts. |
#8
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Lostgallifreyan wrote:
Doesn't look basic, and I suspect it never will to me. The only thing I can get from this is the idea that a particle model will do what the wave one does, which isn't surprising but I've been told that particle based models are usually best left to situations (usually atomic scale quantum mechanical) where the wave model won't do, and I've never seen anyone suggest that wave-based theories of electromagnetics were inadequate (or inefficient) for scales involving obviously large numbers of particles. The other explanations seemed to grip, but not this one. I'll leave well alone now, but if anyone else takes up the discussion, I'll read it and only comment if I can't stop myself.. It's not basic, and it's not real. Art has made up a whole new wing of physics that has only the slightest ties to reality. It involves neutrinos leaping from diamagnetic materials to radiate. And only diamagnetic materials can radiate, unless he revised his theories, which he does regularly. And there are NO waves, just particles And antennas don't work properly unless they are a multiple of a wavelength, but it's OK to roll all that wire up in a ball so that a 160m antenna fits in a shoebox. And then you can use that with a teeny Dish network dish for directionality. Despite the fact that those dishes won't work reasonably at anything less than low GHz frequencies. He is, to put it very plainly, nuts. tom K0TAR |
#9
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Lostgallifreyan wrote:
I've been told that particle based models are usually best left to situations (usually atomic scale quantum mechanical) where the wave model won't do, and I've never seen anyone suggest that wave-based theories of electromagnetics were inadequate (or inefficient) for scales involving obviously large numbers of particles. Consider that man's most ancient exposure to waves was sea/ocean waves which, incidentally, consist of H2O molecule particles. Seems to me that everything that physically exists must exist as a particle. -- 73, Cecil, IEEE, OOTC, http://www.w5dxp.com |
#10
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Lostgallifreyan wrote:
I've been told that particle based models are usually best left to situations (usually atomic scale quantum mechanical) where the wave model won't do, and I've never seen anyone suggest that wave-based theories of electromagnetics were inadequate (or inefficient) for scales involving obviously large numbers of particles. Consider that man's most ancient exposure to waves was sea/ocean waves which, incidentally, consist of H2O molecule particles. Seems to me that everything that physically exists must exist as a particle. -- 73, Cecil, IEEE, OOTC, http://www.w5dxp.com |
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