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| Tags: circular, dilatation, motion, time |
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#171
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"Darwin123" escreveu na mensagem ... On May 4, 2:07 pm, "El Enrrabadore-mor" wrote: "Greg Neill" escreveu na sting.com..."El Enrrabadore-mor" wrote in message Can you see how much out-of-topic you are? Hey, *you're* the one who posted the nonsense, "A system in resonance is a closed system that exchanges no energy with surroundings. Energy is conserved in resonance." I just pointed out your misconceptions and errors. Obviously you must agree that for a case of electromagnetic radiation I'm right. Not really. There is no such thing as resonance in a system comprised of electromagnetic radiation only. By being in resonance we are referring to the frequency of the elecromagnetic radiation matching a resonance frequency in a bound system comprised of electric charges. There is some type of displacement associated with the electric charges. Do you mean the electric field of electromagnetic radiation is made of charges, or are there any sensor (coil) to be "induced" by the radiation magnetic field? No, we you solve the equation for displacement of the bound system being acted upon by the electromagnetic radiation, the solution has at least two components: a transient component and an "equilibrium" component. In the theory of differential equations, the transient component is called the homogenous solution and the equilibrium component is called the inhomogenous component. The exact strength and phase of the transient component vary on the initial conditions on the displacement. The equilibrium solution does not vary with initial conditions. Generally, if the displacement starts at zero, the transient part dies away after a short time. Hence it is often called the transient solution. The equilibrium component never dies away. I believe that you are referring to the equilibrium solution when you say that "the system exchanges no energy with its surroundings." The system usually refers to the bound system of charges, which has a Q-factor. The transient part of course does exchange energy with its surroundings. Otherwise it would never die away. However, the equilibrium part is constant. I think what you are ignoring is that the transient solution and the equilibrium solution can cancel each other out when t=0. What appears to be a build up of energy can also be described as the transient part dying away. It took a second or two for that beer bottle of yours to accumulate enough heat to melt, right? It also took a few seconds for the energy of the microwaves to build up from the oscillator in the microwave oven. You can't say that a system in resonance doesn't exchange energy with its environment. In fact, your example would seem to indicate the opposite of your conclusions. Your microwave was plugged in, right? The socket supplied the power. Ahhh. You must ask to Eric Gisse about the microwave. Damn, I'm lost so far. The bound system is partly characterized by what is called the Q- factor. As Q increases, the time it takes for the transient component to die increases. As Q increases, the amplitude of the equilibrium part increases. The time it takes takes for the transient solution die away increases with the Q factor, The amplitude of the equilibrium solution increases. Some of your comments lead me to believe that you are trying to develop a perpetual motion machine. A perpetual motion machine? If I misunderstood, then I apologize. If I do understand you, then I have criticize your presentation. Melting beer bottles in microwaves does not demonstrate the creation of energy, or even the destruction of entropy. It is Eric Gisse that melts beer bottles in microwaves, not me. It demonstrates the exchange of energy between an oscillator in the microwave, the electromagnetic field in the microwave, and the electric charges in your beer bottle. I recommend some other analogy. I don't mean burning ants with the sun and a magnifying lens. Although similar in some of the physics, it doesn't create energy either. You said: "There is no such thing as resonance in a system comprised of electromagnetic radiation only." That's what I thought in first place, but since Uncle Al come up with that idea and Eric Gisse followed, I was afraid to say so. Therefore, I've said that, for zero damping, energy is conserved for a system in resonance. |
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#172
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On May 11, 7:57 pm, "El Enrrabadore-mor"
wrote: "Darwin123" escreveu na ... On May 4, 2:07 pm, "El Enrrabadore-mor" wrote: "Greg Neill" escreveu na sting.com..."El Enrrabadore-mor" wrote in message Can you see how much out-of-topic you are? Hey, *you're* the one who posted the nonsense, "A system in resonance is a closed system that exchanges no energy with surroundings. Energy is conserved in resonance." I just pointed out your misconceptions and errors. Obviously you must agree that for a case of electromagnetic radiation I'm right. Not really. There is no such thing as resonance in a system comprised of electromagnetic radiation only. By being in resonance we are referring to the frequency of the elecromagnetic radiation matching a resonance frequency in a bound system comprised of electric charges. There is some type of displacement associated with the electric charges. Do you mean the electric field of electromagnetic radiation is made of charges, or are there any sensor (coil) to be "induced" by the radiation magnetic field? The resonance exists between a system of electric charges and the electromagentic field. For instance, consider an antennae attached to a coil of wire. The antenae is designed to collect energy from the electormagnetic field. The antennae and coil system has a resonance frequency mostly determined by the length of the antennae, and a Q factor mostly determined by the impedances in the coil.The antennae and coil are comprised of atoms, which are themselves comprised of nucleii and electrons. The nucleii are positively charged, the electrons are negatively charged. Thus, the antennae and coil are not considered as having been made out of photons. They are a system made of electrically charged particles. The term resonance refers to the coincidence in value between the resonance frequency of the electric charges (antenaae and coil) and the frequency of the electromagnetic field (let us say the frequency of part of the electromagnetic field). I was not at all referring to the electromagnetic field being comprised of electric charges. I was merely referring to the Maxwell equation - classical particle model of an antennae. Your statement was that, "A system in resonance is a closed system that exchanges no energy with surroundings. Energy is conserved in resonance." It obviously makes no sense in terms of an antennae, since by definition the antennae exchanges energy with the electromagnetic field. Your statement that "obviously you must agree that for a case o electromagnetic radiation I'm right." has even less meaning. It sounds like you are referring to electromagnetic field with no antennae. There is no resonance without an antennae or something like an antennae. Resonance is a relationship BETWEEN a system of electric charges (e.g., antennae) and a background of electromagnetic radiation (e.g., radio wave radiation). A less patient person (or me in a less mellow mood) could take your statements as displaying minimum comprehension and maximum hostility. Some of your comments about the Euler equations seem to make a little bit of sense to me, but when you start talking about the electromagnetic field you seem to lose it. Ahhh. You must ask to Eric Gisse about the microwave. Damn, I'm lost so far. Then you never solved a differential equation for a forced harmonic oscillator. That is all the word "resonance" refers to. A system that is like a forced harmonic oscillator. All the other stuff you are referring to can be interpreted as a type of mysticism, not science. The two solutions come out of the analysis of any system that is analogous to a forced harmonic oscillator. The microwave cavity, as most physicists and engineers see it, is a forced harmonic oscillator. The bound system is partly characterized by what is called the Q- factor. As Q increases, the time it takes for the transient component to die increases. As Q increases, the amplitude of the equilibrium part increases. The time it takes takes for the transient solution die away increases with the Q factor, The amplitude of the equilibrium solution increases. Some of your comments lead me to believe that you are trying to develop a perpetual motion machine. A perpetual motion machine? If I misunderstood, then I apologize. If I do understand you, then I have criticize your presentation. Melting beer bottles in microwaves does not demonstrate the creation of energy, or even the destruction of entropy. It is Eric Gisse that melts beer bottles in microwaves, not me. Oh, sorry, that makes more sense. Yes, energy is exchanged between the microwaves and the bottle. That is how the bottle got melted. This is a resonant system. How can you claim that there is no energy exchanged in a resonance? The bottle melted, so obviously energy was exchanged. The bottle is acting like an antennae. The bottle contains electric charges (even if it is an insulator). So how can this system NOT exchange energy, even if it is "in resonance." You said: "There is no such thing as resonance in a system comprised of electromagnetic radiation only." That's what I thought in first place, but since Uncle Al come up with that idea and Eric Gisse followed, I was afraid to say so. Then what you came up with is much worse. A system of electric charges that is in resonance with an electromagnetic field CAN exchange energy with the electromagnetic field. You said originally the system CAN'T exchange energy with an electromagnetic field. Therefore, I've said that, for zero damping, energy is conserved for a system in resonance. OOOOOYYYYY!!!!!!! A system (of electric charges always) in resonance with a component of the electromagnetic field CANNOT ever come to equilibrium with an electromagnetic field UNLESS there is nonzero damping. In the hypothetical case that that antennae and coil have zero impedance, and they are bombarded with EM radiation at their resonant frequency, they will keep on absorbing energy with no limit until they reach whatever energy level will make the system come apart. Without damping, the resonant system ALWAYS takes or gives energy to the electromagnetic field. There is never a balance between taking and giving energy in the case of zero damping. Your statement says quite the opposite. I am at this moment in full sympathy with Eric Gisse. No wonder he yells at you. It sounds like you are confusing the words "resonance" with "balance." A resonant system is not a balanced system.If an opera singer hits a high note, and a wine glass breaks, it is not because the wine glass system is in balance with the acoustic field. The wine glass system is in resonance with the acoustic field. In the case of his beer bottle system, it kept on taking energy from the electromagnetic radiation until it melted. It came apart. It never reached a balance until it was destroyed. I suspect the melted bottle was still absorbing energy after it melted. Without damping, the system is always pulling energy from the field (or pushing it, in the time reversed situation). |
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#173
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"Darwin123" escreveu na mensagem ... On May 11, 7:57 pm, "El Enrrabadore-mor" wrote: "Darwin123" escreveu na ... On May 4, 2:07 pm, "El Enrrabadore-mor" wrote: "Greg Neill" escreveu na sting.com..."El Enrrabadore-mor" wrote in message Can you see how much out-of-topic you are? Hey, *you're* the one who posted the nonsense, "A system in resonance is a closed system that exchanges no energy with surroundings. Energy is conserved in resonance." I just pointed out your misconceptions and errors. Obviously you must agree that for a case of electromagnetic radiation I'm right. Not really. There is no such thing as resonance in a system comprised of electromagnetic radiation only. By being in resonance we are referring to the frequency of the elecromagnetic radiation matching a resonance frequency in a bound system comprised of electric charges. There is some type of displacement associated with the electric charges. Do you mean the electric field of electromagnetic radiation is made of charges, or are there any sensor (coil) to be "induced" by the radiation magnetic field? The resonance exists between a system of electric charges and the electromagentic field. For instance, consider an antennae attached to a coil of wire. The antenae is designed to collect energy from the electormagnetic field. The antennae and coil system has a resonance frequency mostly determined by the length of the antennae, and a Q factor mostly determined by the impedances in the coil.The antennae and coil are comprised of atoms, which are themselves comprised of nucleii and electrons. The nucleii are positively charged, the electrons are negatively charged. Thus, the antennae and coil are not considered as having been made out of photons. They are a system made of electrically charged particles. The term resonance refers to the coincidence in value between the resonance frequency of the electric charges (antenaae and coil) and the frequency of the electromagnetic field (let us say the frequency of part of the electromagnetic field). I was not at all referring to the electromagnetic field being comprised of electric charges. I was merely referring to the Maxwell equation - classical particle model of an antennae. Your statement was that, "A system in resonance is a closed system that exchanges no energy with surroundings. Energy is conserved in resonance." It obviously makes no sense in terms of an antennae, since by definition the antennae exchanges energy with the electromagnetic field. All you've said sounds perfect, but I still say the same for zero damping. A system with zero damping (an ideal system) has no dissipative forces and, therefore energy is conserved. Your statement that "obviously you must agree that for a case o electromagnetic radiation I'm right." has even less meaning. It sounds like you are referring to electromagnetic field with no antennae. Of course it is with no antennae, coil, whatever. No dissipation, was what I had in mind and still have in mind. There is no resonance without an antennae or something like an antennae. Resonance is a relationship BETWEEN a system of electric charges (e.g., antennae) and a background of electromagnetic radiation (e.g., radio wave radiation). I knew it all the time. A less patient person (or me in a less mellow mood) could take your statements as displaying minimum comprehension and maximum hostility. Some of your comments about the Euler equations seem to make a little bit of sense to me, but when you start talking about the electromagnetic field you seem to lose it. I don't pretend to be an expert on the electromagnetic field, but I believe I do know enough to discuss it above the average. What's strange is that I haven't discussed it so far. The last time I did it was time ago, say 1/2 Year maybe. Look, I was suppose to reply Uncle AL about the following, which came from nowhere and sounds exactly like this (about time dilation and circular motion): QUOTE: The experiment was done with Mossbauer spectroscopy in an ultracentrifuge, rim to hub. READ IT. http://prola.aps.org/abstract/PR/v129/i6/p2371_1 Fe-57 14.4-keV Mossbauer absorption line traversing an ultracentrifuge rotor was measured versus angular velocity omega. Fe-57 absorber placed at 9.3 cm radius. Co-57 source mounted on a hub piezoelectric transducer. Triangular voltage wave was applied to the transducer to move source relative to absorber. The entire resonance line was observed at various omega values. Measured transverse Doppler shift agreed within 1.1% experimental error with relativity predictions. END QUOTE. All I have is the above abstract which leads no where. Read it where? Can't read the paper. I don't have a clue on what Uncle Al said, as everybody else, since that's exactly the point. Now, put yourself in my place, what would you say? I've said: QUOTE: Do you pretend to measure resonance lines too? Any frequency that is a multiple of the natural frequency will cause resonance. So the 46 Years old experiment can only be horse dung. BTW, what's relativity prediction? END QUOTE Notice my comment about resonance on electromagnetism. How can I have resonance between electromagnetic waves was my thought? Electromagnetic waves don't interfere one to each other (more or less like you said too). Next, some beer bottles melted in the microwave...because of Uncles Al post, so...should I sing or dance? I cannot understand why you pretend to disagree with me on that matter, but... Ahhh. You must ask to Eric Gisse about the microwave. Damn, I'm lost so far. Then you never solved a differential equation for a forced harmonic oscillator. That is all the word "resonance" refers to. Actually I did, and I do solve them very carefully. What I cannot understand is what does the fact that Eric Gisse melts beer bottles in microwaves has to do with my skills to solve, or not, a differential equation for a forced harmonic oscillator. Nobody ever talked about "forced" and "damping". Without external forces and zero internal damping energy is conserved. All I see is an ideal mass-spring system that swings forever... and energy is conserved. A system that is like a forced harmonic oscillator. All the other stuff you are referring to can be interpreted as a type of mysticism, not science. The two solutions come out of the analysis of any system that is analogous to a forced harmonic oscillator. The microwave cavity, as most physicists and engineers see it, is a forced harmonic oscillator. The Sun-Earth system also is a forced harmonic oscillator. The bound system is partly characterized by what is called the Q- factor. As Q increases, the time it takes for the transient component to die increases. As Q increases, the amplitude of the equilibrium part increases. The time it takes takes for the transient solution die away increases with the Q factor, The amplitude of the equilibrium solution increases. Some of your comments lead me to believe that you are trying to develop a perpetual motion machine. A perpetual motion machine? If I misunderstood, then I apologize. If I do understand you, then I have criticize your presentation. Melting beer bottles in microwaves does not demonstrate the creation of energy, or even the destruction of entropy. It is Eric Gisse that melts beer bottles in microwaves, not me. Oh, sorry, that makes more sense. Yes, energy is exchanged between the microwaves and the bottle. That is how the bottle got melted. This is a resonant system. How can you claim that there is no energy exchanged in a resonance? The bottle melted, so obviously energy was exchanged. The bottle is acting like an antennae. The bottle contains electric charges (even if it is an insulator). So how can this system NOT exchange energy, even if it is "in resonance." Well, I didn't say anything like that. Discussions with Eric Gisse are always a mess, because he never focus on the subject and keeps saying things like "melting beer bottles" on a discussion about circular motion and time dilation. You said: "There is no such thing as resonance in a system comprised of electromagnetic radiation only." That's what I thought in first place, but since Uncle Al come up with that idea and Eric Gisse followed, I was afraid to say so. Then what you came up with is much worse. A system of electric charges that is in resonance with an electromagnetic field CAN exchange energy with the electromagnetic field. You said originally the system CAN'T exchange energy with an electromagnetic field. Therefore, I've said that, for zero damping, energy is conserved for a system in resonance. OOOOOYYYYY!!!!!!! What's the buzz? Yes, for zero damping, energy is conserved for a system in resonance. I'm not assuming external forces too, because there are none on the main topic I was discussing "Time dilation in circular motion". Ahhhh, I get the point, by resonance you assume that external forces must exist. Yes, you right. Look, What really troubles me is a mass-spring system that must oscillate at its natural frequency w0=sqrt(k/m). The external source are Ocean waves, which have some constant frequency, but are not that regular. This is a key point on wave energy conversion and I always see the mass-spring system decoupled (k-mw^2=0) from the power extraction system: Force term = damping term. Therefore, to me, a mass-spring system once oscillating will oscillate forever at the resonance frequency. I've wrongly called that system in resonance, because by "resonance" you mean that an external force must exist. Sorry. To me, a system oscillates at its natural frequency which is also its main resonance frequency. Double, triple and so on also causes resonance of the system. That's how industrial machinery vibration spectrum analysis work (a field where I'm an expert, wrote a small book, and so on). A system (of electric charges always) in resonance with a component of the electromagnetic field CANNOT ever come to equilibrium with an electromagnetic field UNLESS there is nonzero damping. Who said anything about equilibrium? Without dissipative force the system ever come to equilibrium. You need to introduce a nonzero damping to get a Q factor. Look, Q = w0 / gamma = sharpness of oscillator gamma - damping factor w0 - natural frequency of the system - sqrt(k/m) for instance. (Don't need an external force to define the Q factor). In the hypothetical case that that antennae and coil have zero impedance, and they are bombarded with EM radiation at their resonant frequency, they will keep on absorbing energy with no limit until they reach whatever energy level will make the system come apart. Without damping, the resonant system ALWAYS takes or gives energy to the electromagnetic field. There is never a balance between taking and giving energy in the case of zero damping. I don't agree. I give you an antenna with zero damping. A 2 meter copper wire suspended by a plastic string with infinite resistance, inductance and capacitance. That is, a perfect ideal insulator and a wire, only. Those 2 meters of wire will receive billions of billions of electromagnetic waves and won't explode, nor do anything else. How can a system absorb energy if it has zero damping? (in electromagnetism only). Can you increase the energy content of an already existent electromagnetic wave? You cannot, simply because electromagnetic waves never, ever, interfere one to each other. Electromagnetic waves don't obey the Maximum Power Transfer Theorem (Yep,...this is a good one). Your statement says quite the opposite. I am at this moment in full sympathy with Eric Gisse. No wonder he yells at you. Ahhh, I see. You trying to clean up... ...never mind. It sounds like you are confusing the words "resonance" with "balance." A resonant system is not a balanced system.If an opera singer hits a high note, and a wine glass breaks, it is not because the wine glass system is in balance with the acoustic field. The wine glass system is in resonance with the acoustic field. In the case of his beer bottle system, it kept on taking energy from the electromagnetic radiation until it melted. It came apart. It never reached a balance until it was destroyed. I suspect the melted bottle was still absorbing energy after it melted. Without damping, the system is always pulling energy from the field (or pushing it, in the time reversed situation). I'm not confusing anything. What confuses me, so far, is the reason why you've written several lines of text about a subject which I was not discussing, pretending to be correcting me about something that I never discussed. Do you want to talk about complex conjugate control? which is a special case of resonance under forced oscillation. Want to talk about the Maximum Power Transfer Theorem? I've an interest on those subjects. If you feel like having enough background to keep the discussion on a good level, I'm sure we can learn some news from each other, about power transfer, wave energy power transfer, and so on. Besides that, power transfer was what you've been talking all the time so far. |
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#174
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On May 13, 10:20 pm, "El Enrrabadore-mor"
wrote: "Darwin123" escreveu na ... On May 11, 7:57 pm, "El Enrrabadore-mor" wrote: "Darwin123" escreveu na ... On May 4, 2:07 pm, "El Enrrabadore-mor" wrote: "Greg Neill" escreveu na sting.com..."El Enrrabadore-mor" wrote in message Look, I was suppose to reply Uncle AL about the following, which came from nowhere and sounds exactly like this (about time dilation and circular motion): QUOTE: The experiment was done with Mossbauer spectroscopy in an ultracentrifuge, rim to hub. READ IT. http://prola.aps.org/abstract/PR/v129/i6/p2371_1 Fe-57 14.4-keV Mossbauer absorption line traversing an ultracentrifuge rotor was measured versus angular velocity omega. Fe-57 absorber placed at 9.3 cm radius. Co-57 source mounted on a hub piezoelectric transducer. Triangular voltage wave was applied to the transducer to move source relative to absorber. The entire resonance line was observed at various omega values. Measured transverse Doppler shift agreed within 1.1% experimental error with relativity predictions. END QUOTE. The abstract alone, even without any details the article may provide, addresses some of your questions. It describes an experiment concerning real systems (atoms) in resonance with real electromagnetic radiation (the gamma rays). The systems (the atoms) are accelerated, and are not in inertial frames. There is no "gravitational potential" except what is simulated by the radial acceleration. The results are consistent with what the authors perceive of as special relativity. This article explains exactly what these experimenters think the "time" in SR means. Being experimenters, they are not likely to stick to abstract concepts of "space-time continuum" that no one but Minkowski could understand. They will explain what they know about relativity on a technicians level. Therefore, before you insult any other scientist, I suggest you read this article. Let me also recommend a few articles by Hefele on the Hefele-Keating experiment. You need a few experimentalist descriptions of special relativity. Now, you may think the authors don't know a thing about special relativity. For this, you have to read the article and see how they did their calculations and experiments. However, be warned. What these authors think of as special relativity is probably pretty close to what most physicists think is special relativity. If you claim they used the Lorentz transformation wrong, then someone out there will claim it is you who misunderstood the Lorentz transformation. I suspect they also know a thing or two about forced harmonic oscillators. All I have is the above abstract which leads no where. Read it where? Can't read the paper. I don't have a clue on what Uncle Al said, as everybody else, since that's exactly the point. Above the abstract is a Buy This Article. For $20.00, you can download a copy of the article. Get your credit card out, or debit card (which is much safer) and buy that article. You will get your own electronic copy of the file, in Adobe Acrobat format (pdf file) which you can print on paper or read directly off the screen. I will not buy it for you, and Uncle Al probably won't either. If you don't want to pay the money, and have the time, I would recommend a visit to the closest college or university library where copies of that journal may be available for reference. I have always been fortunate enough to live near a large university. The university library often allows nonstudents to use their reference stacks. You can buy the article for $0.05 per page. This is probably cheaper than the download, but takes a bit more time. However, you may find paper hardcopy has its advantages. You have the abstract. The thing is, the abstract doesn't present as much detail as the article. In the article, the authors may reveal how they solved the very details that you find troubling. For example, they may show you how acceleration enters special relativity. And not in terms of "space-time curvature," I mean in real nut/bolt terms. I have bought a lot of articles (more than $1000) for research that I am doing at home on fish. I feel it is worth it even if I am not sure the information in the article is useful. Often, I find someone has already solved the problem I want to solve. If not, I have evidence that the scientific community really is as backwards as I want to believe. In any case, a little commitment of time or money would make your bad-mouthing of scientists more convincing. Right now, you don't sound like you know enough about relativity to even be wrong, let alone right. Now, put yourself in my place, what would you say? I've said: QUOTE: Do you pretend to measure resonance lines too? Any frequency that is a multiple of the natural frequency will cause resonance. That is not exactly true. You are talking here about nonlinear effects. These are gamma ray lines. Trust me, there was no source of gamma rays that are exactly integral multiples of the natural frequency of those lines. So the 46 Years old experiment can only be horse dung. There were no sources of gamma rays at integral multiples of the natural frequency 46 years ago either. Not even in horse dung. BTW, what's relativity prediction? You plug some experimental parameters into an equation, and calculate some theoretical values. The theoretical values are predictions. You then do a new experiment and measure experimental values to compare with the theoretical values. If the theory you use is relativity, the theoretical values are relativity predictions. Doh! I deserve at least three Nobel prizes for this correlation. Notice my comment about resonance on electromagnetism. How can I have resonance between electromagnetic waves was my thought? Electromagnetic waves don't interfere one to each other (more or less like you said too). Next, some beer bottles melted in the microwave...because of Uncles Al post, so...should I sing or dance? How about think? Actually I did, and I do solve them very carefully. What I cannot understand is what does the fact that Eric Gisse melts beer bottles in microwaves has to do with my skills to solve, or not, a differential equation for a forced harmonic oscillator. How is energy being conserved in the beer bottles? Think... Nobody ever talked about "forced" and "damping". Without external forces and zero internal damping energy is conserved. But energy can be concentrated. The energy density changes. There is a limit in real materials as to how much energy density the material will support. So the system can't be static. Energy is always conserved, with or without resonance. However, without damping, the energy density will never reach an upper bound until the system breaks. Your energy being conserved is a general statement that is always true. Your implication that the energy density is constant without damping is always false. Yes, I know you never said "energy density." In any case, the amplitude can't be constant. It will increase until the system is no longer in resonance. In some cases, the system melts. Then the resonance stops. The amplitude can not be conserved. Is that better? All I see is an ideal mass-spring system that swings forever... and energy is conserved. Without damping, the ideal mass-spring system won't merely swing forever. The amplitude gets bigger and bigger with time. There is no upper bound to the amplitude of the ideal system without damping. The amplitude increases to the point where the "ideal mass-spring system" stops being ideal. The Sun-Earth system also is a forced harmonic oscillator. No its not. It is a free harmonic oscillator. If there was no other planets, then there would not be a resonance. I don't think you were thinking about other planets, so don't drag them in now. There are resonances between objects in the solar system. However, there is no resonance in the sun-earth system. The sun-earth system is a harmonic oscillator. With no other objects around, there can be no resonance. Suppose we did have a resonance in the solar system. Suppose there was another planet (planet R), the size of Jupiter, that was exactly the same distance from the sun as the earth. It had exactly the same period as the earth, but had an orbit at right angles to the orbit of the earth. Then there would be a resonance between the earth sun system and the R - sun system. Planet R would pull at the earth, and boost its orbit larger and larger. At some point, the earth would be so far from the sun that its period would be much longer. And then, there goes the resonance. What exactly was conserved? It wasn't the resonance. Energy was conserved. Energy went from planet R to earth. However, the amplitude increased. The real problem: Saying the earth-sun system is at resonance doesn't really mean anything. Saying energy is conserved doesn't mean anything. In fact, if one system is at resonance with another, energy will pass from one system to the other. Energy is NOT conserved in the individual system. I am getting tired. I don't think I will stick to this topic much longer. Just let me point out the fallacy in your analogy, and I'll stop. One can't talk about the earth-sun system "being at resonance" without mentioning what the other system is that it is "in resonance" with. Equating "resonance" with "conservation of energy" isn't helpful either, since any conservative force has to conserve energy. You are starting to sound scientifically illiterate. You may be scientifically literate, but you are not showing it with garbled language. Boy, I have to melt a beer bottle now. Well, I didn't say anything like that. Discussions with Eric Gisse are always a mess, because he never focus on the subject and keeps saying things like "melting beer bottles" on a discussion about circular motion and time dilation. Because you keep saying things like "a system at resonance conserves energy." Every time you say that, he is going to melt a beer bottle. The ones I will mail him. |
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#175
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On May 3, 1:13*pm, wrote:
On May 3, 11:52*am, "Androcles" wrote: This message is brought to you by Androcles *http://www.androcles01.pwp.blueyonder.co.uk/ "El Enrrabadore-mor" wrote in message ... | It is said that a speeding clock shows less elapsed time than | the stay-at-home clock, because (if already speeding) it is | running at a slower rate. Or else, because it had run at a | slower rate when it was speeding, assuming now it is | stopped near the stay-at-home clock. | | The funny thing about this is that time and length change | at the same time, but not the ratio between both (velocity). | | If we keep length constant, the only possible solution is | uniform circular motion. That is a twin travelling in circles, | of constant radius r, around the first twin assumed to be | stopped at the center of rotation. | | Let's say the radius r is a constant value of 100 light-seconds | (r = 100c). | The speeding twin goes on a spaceship at 0.999c. | Therefore, the angular speed 'omega' is v/r = 0.999c/100c | = 0.01 rad/s. | The speeding twin takes 628 seconds to have a complete turn | of 360 degrees. | | For small values of t, the speeding twin is almost going in | a straight line, but is fact it has a centripetal force f = m c^2/r | = m c/100, being the centripetal acceleration c/100, towards | the first stopped twin in the center of rotation. | | Both twins have powerful antennas that broadcast radio | spherically around the entire space. Both twins are tuned | to each other frequency/radio-station. | | Since the distance r = 100c between the emitter and the | receptor is constant, obviously that both twin will hear | each other radio (music) in perfect conditions. | | Nevertheless, relativity says that the clock synchronising | the emission of the speeding twin must be running at | a clock rate close to zero. Theoretically, the speeding | twin won't have any trouble receiving the stay-at-home | radio emission, but the stay-at-home twin cannot | receive the speeding twin radio emission, because | the speeding clock is running near zero. | The speeding twin radio emission will take infinite | time to broadcast one single spoken word. The | stay-at-home will be dead by the time the speeding | twin could say a single word. | | The trouble seams to be the acceleration: | a = (0.999)^2 c/100 which is about c/100. | (Here the number 100 means 100 seconds). | That's a huge gravity field of 300,000g at | a radius of 100 light-seconds, just imagine | the value it will be at Earth radius based | on the inverse-square Law.) | | I presume that such acceleration of 300,000g will | be responsible for a clock speed up rate that | should keep time unchanged after all. | | Any comments welcome. Install an atomic clock at Ross Island, McMurdo Sound. Antarctica's largest science base, the United States' McMurdo Station, as well as New Zealand’s Scott Base are located on the island’s south shore. "Thence we conclude that a balance-clock at the equator must go more slowly, by a very small amount, than a precisely similar clock situated at one of the poles under otherwise identical conditions." Ref: *http://www.fourmilab.ch/etexts/einstein/specrel/www/ But centrifigul force cancels gravity weight at the equator. You weigh less. I haven't heard anyone screaming about how Einstein was proved right and it would be quite easy to do.- Hide quoted text - - Show quoted text -- Hide quoted text - - Show quoted text - No length contraction. No flat atoms. No flat universe. Mitch Raemsch |
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"bz" escreveu na mensagem 98.139... "El Enrrabadore-mor" wrote in : All I have is the above abstract which leads no where. Read it where? Can't read the paper. I don't have a clue on what Uncle Al said, as everybody else, since that's exactly the point. I will e-mail you a copy. e-mail me at bz plus nanae at chem dot lsu dot edu Many thanks, but I don't have nor time nor enough interest to read it. I was just looking for someone that could make any sense explaining how relativity deals with the most common problems of all - rotations. Rotations might sound something irrelevant to most of the readers, nevertheless no one, ever, had pointed me a celestial body which is not rotating and orbiting. Besides that, gyroscopes are still unexplained. Gravity and inertia are still the major source of speculation. Lost my faith on physics. It become a religion. Once more, I've just take some time to show how pathetic physicists are about rotations. Physics rely on Euler's equations which fail on spheres, the shape of all celestial bodies (proven in this thread). Besides that, since nobody had said or pointed anything relevant on what really matters to me, which are "Gyroscopes and Waves Power Transfer", I'm going back to my painful work deluded about physics and it's inability to explain by equations the most basic of all - "The Wheel Invention". Regards. (I won't even take time to reply Darwin123) |
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"bz" escreveu na mensagem 98.139... "El Enrrabadore-mor" wrote in : All I have is the above abstract which leads no where. Read it where? Can't read the paper. I don't have a clue on what Uncle Al said, as everybody else, since that's exactly the point. I will e-mail you a copy. e-mail me at bz plus nanae at chem dot lsu dot edu Many thanks, but I don't have nor time nor enough interest to read it. I was just looking for someone that could make any sense explaining how relativity deals with the most common problems of all - rotations. Rotations might sound something irrelevant to most of the readers, nevertheless no one, ever, had pointed me a celestial body which is not rotating and orbiting. Besides that, gyroscopes are still unexplained. Gravity and inertia are still the major source of speculation. Lost my faith on physics. It become a religion. Once more, I've just take some time to show how pathetic physicists are about rotations. Physics rely on Euler's equations which fail on spheres, the shape of all celestial bodies (proven in this thread). Besides that, since nobody had said or pointed anything relevant on what really matters to me, which are "Gyroscopes and Waves Power Transfer", I'm going back to my painful work deluded about physics and it's inability to explain by equations the most basic of all - "The Wheel Invention". Regards. (I won't even take time to reply Darwin123) |
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On May 15, 9:39 am, "El Enrrabadore-mor"
wrote: "bz" escreveu na mensagemnews:Xns9A9E5F878EB4AWQAHBGMXSZHVspammote@ 130.39.198.139... "El Enrrabadore-mor" wrote in : All I have is the above abstract which leads no where. Read it where? Can't read the paper. I don't have a clue on what Uncle Al said, as everybody else, since that's exactly the point. I will e-mail you a copy. e-mail me at bz plus nanae at chem dot lsu dot edu Many thanks, but I don't have nor time nor enough interest to read it. The abstract tells you what it is about. The article is on an experiment involving rotation that the authors claim proves special relativity. I was just looking for someone that could make any sense explaining how relativity deals with the most common problems of all - rotations. Yet, you don't have the time or the interest in reading about an experiment where the investigators have claimed to prove relativity with rotation. Rotations might sound something irrelevant to most of the readers, Except for the articles of authors of that article you don't want to read. These authors seem to feel rotations are very important. Also look up the Hefele-Keating experiment. The clocks in this experiment are subjected to rotation around the center of the earth. nevertheless no one, ever, had pointed me a celestial body which is not rotating and orbiting. How is that relevant? Rotation is anlyzed in just about every physics course I have taken. Einstein describes rotating systems in his articles. Why are you ignoring all that research? Besides that, gyroscopes are still unexplained. Gravity and inertia are still the major source of speculation. Nonsense. The problem is that you don't have the background or the interest to look up the relevant articles. Regards. (I won't even take time to reply Darwin123) Thank you! |
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"Darwin123" escreveu na mensagem ... On May 15, 9:39 am, "El Enrrabadore-mor" wrote: (I won't even take time to reply Darwin123) Thank you! You welcome. I've already read enough about relativity to see that it can't lead nowhere, with something that could make any sense, or have any use that could be good to me. Besides that, I've collected tens of arguments against. Since you've presented yourself as a master on physics, perhaps you should want to take some time to lecture about what nobody else have so far explained successfully. Namely: - Pioneer issue in this thread. - The gyroscopes issue (you gone). - New thread I've started Today: "Calculation of Earth's precession" - The thread from 11-5-2008 called: "A simpler question about rotating frames" started by your friend Dono. - And the topic: "Time dilation in circular motion". What's relativity prediction? Equation? Once I learn your kind of music I will dance accordingly. |
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