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Physics Challenged
Hey Dave
Here's a tip for ya. As the first order of business, get rid of that archaic term 'aether' and replace it with something more descriptive and definitive. Something like "Sub-Planck Energy Domain". There's such a powerfully entrenched stigma against 'aether/ether' that any referance to it provokes a Pavlovian cacophony yowls and howls. oc |
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Bill Sheppard wrote: Hey Dave Here's a tip for ya. As the first order of business, get rid of that archaic term 'aether' and replace it with something more descriptive and definitive. Something like "Sub-Planck Energy Domain". Space within space or better put, sub-space. Reminds me of why the spacing used in language is always the same, and written communication always with end points or "periods." How many times have you heard someone say, "What's your point?" There's such a powerfully entrenched stigma against 'aether/ether' that any referance to it provokes a Pavlovian cacophony yowls and howls. oc And that says alot about mechanical processes in the human brain as if on "automatic pilot" preset to a default of ("the point is") zero. One could say that gravity is like the ego, and emotions behave like the laws of thermodynamics. Watch how the ego forms a 'singularity' of dualistic reasoning and spirals into its own entropic death or 'end' point. |
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Hi oc I like that your term for the aether "sub-Planck energy
dormain". It fits well with my micro thinking.,and where the source of gravity is hiding. I also relate this microscopic Planck size,energy,time to what is conditions inside a black hole. My thinking is its best to use micro energy force particles than matter particles when thinking of the structure of the aether or inside structure of a black hole. The aether(space) is getting more play(thought) and the area between the black holes surface,and its exact core center has to be very dynamic. It could be spin,and gravity all the way down. It fits Bert |
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From Bert:
I like that your term..... "sub-Planck energy domain". Actually the term is not mine. The credit goes entirely to Painius, who assigned it the acronym SPED. Formerly, i had been using the term 'vacuum energy density' or VED. Former to that, i had been using Wolter's term "super energy-dense matrix of space". But that evoked multitudinous yowls and howls that it was an attempt to resurrect the 'aether theory'. In exasperation i tried to come up with a term that conveyed the energy density of space yet preserved the integrity of the "vacuum". Hence 'VED'. But Painius observed that was still more of a description than a *definition*. After a bit of mutual brainstorming, he suggested 'Sub Planck Energy Domain'(SPED). For a little while we used SPED/VED, then dropped 'VED' entirely. oc |
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"Bill Hobba" wrote in message
... snipped This has been discussed on sci.physics.relativity a lot and unfortunaly there is no clear cut answer available. By definition an inertial frame is one that is homogenous in space and time and isotropic in space. The POR says the laws of physics is the same in any inertial frame or one moving at constant velocity wrt to an inertial frame. This immediacy implies a frame moving at constant velocity wrt to an inertial frame must be inertly and hence isotropic. If an aether did exist then it would create an aether wind that would break isotropy and hence invalidate the POR. However other views exist - the most detailed discussion I can recall being one with Timo on his excellent derivation of the Lorentz transforms - http://groups-beta.google.com/group/...0a10bc70d7d438. snipped Bill Can I get your thoughts on something? Let's suppose for a second that aether does exist. For the sake of argument, we'll say that the aether has the following properties: it is particulate, it is massless, it is arranged such that in the absense of energy (of any kind, matter included) each particle is 1 Planck unit away from its nearest neighbors, it is repulsed by its neighbors, a matter "particle" is the binding of a region of these to a single given high energy state, the motion of a "particle" through space is the movement of energy by means of energizing aether in front of the "particle" and de-energizing aether behind the "particle", propagation of EM is energetic wave motion through this aether. We should be able to set up a mental model from this. Hopefully it's complete enough for the questions I'll ask. It can be inferred from the speed of light in a vacuum that no energy exchanges ever occur in less than 1 Planck time. Couldn't this explain why relativistic effects occur? Think about it for a second. Particles moving through aether would experience something similar to the sound barrier as they approach the speed of light because the aether simply is not able to "pass through" the particle fast enough. As such, the aether in front of the particle would become compressed to distances shorter than 1 Planck length. This is where the energy not corresponding to classical mechanics is actually being spent. As for the isotropy and aether wind issues, under such conditions as what I've described here, why would it matter? The aether wind itself is not likely to produce any measurable effects until the detectors are moving at relativistic speeds. Those effects are themselves known as Special Relativity. So since Special Relativity is verified, it should be true that if an aether wind does exist, then relativistic speeds relative to earth in the direction of the aether wind should require less energy than the same speeds at right angles to the wind, and those speeds would require less energy than the same speeds upwind. Does this not make sense? The difference would likely be minimal since it is doubtful that the total sum of all the orbital motions of the earth combined would be anywhere near a relativistic speed. Taking this view, the Michaelson-Morley experiment was doomed to failure since relative to the aether, the emitter emitted the light at an angle such that if the earth had suddenly stopped moving relative to the aether after the emission, the light would have missed the target. It's no different than considering what happens when you throw a ball from one car to the other when both are moving at 20 mph, ignoring atmospheric wind effects(since atmospheric wind doesn't pass through the ball). Now the question. Barring quantum physics (which is statistical where this model is deterministic), what's conceptually wrong with this model with respect to Relativity? R. |
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"Ranando King" wrote in message ... "Bill Hobba" wrote in message ... snipped This has been discussed on sci.physics.relativity a lot and unfortunaly there is no clear cut answer available. By definition an inertial frame is one that is homogenous in space and time and isotropic in space. The POR says the laws of physics is the same in any inertial frame or one moving at constant velocity wrt to an inertial frame. This immediacy implies a frame moving at constant velocity wrt to an inertial frame must be inertly and hence isotropic. If an aether did exist then it would create an aether wind that would break isotropy and hence invalidate the POR. However other views exist - the most detailed discussion I can recall being one with Timo on his excellent derivation of the Lorentz transforms - http://groups-beta.google.com/group/...0a10bc70d7d438. snipped Bill Can I get your thoughts on something? Let's suppose for a second that aether does exist. For the sake of argument, we'll say that the aether has the following properties: it is particulate, it is massless, If it was massless then it would move at the speed of light in all FOR's - it is rather difficult to see how a medium moving at the speed of light can have something traveling relative to it (after all it is meant to be the wave carrier of light) at the speed of light. it is arranged such that in the absense of energy (of any kind, matter included) each particle is 1 Planck unit away from its nearest neighbors, it is repulsed by its neighbors, a matter "particle" is the binding of a region of these to a single given high energy state, the motion of a "particle" through space is the movement of energy by means of energizing aether in front of the "particle" and de-energizing aether behind the "particle", propagation of EM is energetic wave motion through this aether. See what I wrote above. We should be able to set up a mental model from this. Hopefully it's complete enough for the questions I'll ask. It can be inferred from the speed of light in a vacuum that no energy exchanges ever occur in less than 1 Planck time. Couldn't this explain why relativistic effects occur? Think about it for a second. No one is denying it is impossible for an aether to exist - aether theories exist and are in accord with experiment. Aether models have been proposed that are in accord with experiment. That is not the point. The point is one does not have to exist and physics has gotten along without it for a century. If you want to propose a particular model go ahead (what you wrote above is not really a model - it is simply a lot of vague ideas cobbled together - a model can make quantitative predictions). Ilja's GLET is an example of what an actual model would look like. Particles moving through aether would experience something similar to the sound barrier as they approach the speed of light because the aether simply is not able to "pass through" the particle fast enough. As such, the aether in front of the particle would become compressed to distances shorter than 1 Planck length. This is where the energy not corresponding to classical mechanics is actually being spent. As for the isotropy and aether wind issues, under such conditions as what I've described here, why would it matter? The aether wind itself is not likely to produce any measurable effects until the detectors are moving at relativistic speeds. Those effects are themselves known as Special Relativity. So since Special Relativity is verified, it should be true that if an aether wind does exist, then relativistic speeds relative to earth in the direction of the aether wind should require less energy than the same speeds at right angles to the wind, and those speeds would require less energy than the same speeds upwind. Does this not make sense? The difference would likely be minimal since it is doubtful that the total sum of all the orbital motions of the earth combined would be anywhere near a relativistic speed. Taking this view, the Michaelson-Morley experiment was doomed to failure since relative to the aether, the emitter emitted the light at an angle such that if the earth had suddenly stopped moving relative to the aether after the emission, the light would have missed the target. It's no different than considering what happens when you throw a ball from one car to the other when both are moving at 20 mph, ignoring atmospheric wind effects(since atmospheric wind doesn't pass through the ball). Now the question. Barring quantum physics (which is statistical where this model is deterministic), what's conceptually wrong with this model with respect to Relativity? See what I wrote above. Thanks Bill R. |
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"Bill Hobba" wrote in message ... "Ranando King" wrote in message snipped Can I get your thoughts on something? Let's suppose for a second that aether does exist. For the sake of argument, we'll say that the aether has the following properties: it is particulate, it is massless, If it was massless then it would move at the speed of light in all FOR's - it is rather difficult to see how a medium moving at the speed of light can have something traveling relative to it (after all it is meant to be the wave carrier of light) at the speed of light. Hang on a sec. If it's massless, is it required to move? I would tend to state that "when it *does move*, it moves at the speed of light. What's more, when it does move, it doesn't go very far before giving up it's energy to the next aether particle and being forced back to its original position. If aether is the wave carrier of light, then the aether itself would be *required* to move at the speed of light when it moves in order to pass the energy on to the next particle of aether, wouldn't it? The reason mass moves so much slower is because it's not possible for all of the aether particles that constitute a massive object to pass their energy forward to the next group of aether particles simultaneously. The more massive the object, the more difficult it is to pass all of the energy composing it forward. it is arranged such that in the absense of energy (of any kind, matter included) each particle is 1 Planck unit away from its nearest neighbors, it is repulsed by its neighbors, a matter "particle" is the binding of a region of these to a single given high energy state, the motion of a "particle" through space is the movement of energy by means of energizing aether in front of the "particle" and de-energizing aether behind the "particle", propagation of EM is energetic wave motion through this aether. See what I wrote above. Please re-evaluate and try to consider the possibilities, regardless of how vaguely described here. We should be able to set up a mental model from this. Hopefully it's complete enough for the questions I'll ask. It can be inferred from the speed of light in a vacuum that no energy exchanges ever occur in less than 1 Planck time. Couldn't this explain why relativistic effects occur? Think about it for a second. No one is denying it is impossible for an aether to exist - aether theories exist and are in accord with experiment. Did you mean "impossible" as you wrote, or did you mean "possible"? If you meant "impossible" then I don't understand the sentence. Aether models have been proposed that are in accord with experiment. That is not the point. The point is one does not have to exist and physics has gotten along without it for a century. If you want to propose a particular model go ahead (what you wrote above is not really a model - it is simply a lot of vague ideas cobbled together - a model can make quantitative predictions). Ilja's GLET is an example of what an actual model would look like. If the point is truely about what doesn't have to exist, then in the same mode of thinking, neither does science. Life will proceed just fine without us humans trying to figure out how it all works. Life continued on this planet for thousands of years without science. :-) That was admittedly a bit sarcastic, but the point is that the mathematical models provided by quantum physics are admittedly very much incomplete. The idea that light travels at the same speed in all reference frames is an axiom. It may likely pan out to be true if we can ever travel at relativistic speeds and test the theory. But whether it is true or not, it is a curiosity. It's natural for one to wonder why. Its also counter-intuitive that at relativistic speeds, an increasing amount of the energy you put into accelerating gets diverted to increasing inertia, but only in the direction of motion. When one asks why such things happen, the first thing one receives is the mathematics of Relativity. When one points out that this is merely a model of what's happening and not the reason, then one is told that this is just how spacetime works. I, for one, can no more accept such a rather escapist answer than R.A. Milikan could accept that the then yet to be named electron was as massive as a hydrogen atom after measuring its charge. The bottom line here is that a great many properties are attributed to the nothingness of spacetime. Those of us entertaining the aether notion are simply asking how "nothing" can have properties. Particles moving through aether would experience something similar to the sound barrier as they approach the speed of light because the aether simply is not able to "pass through" the particle fast enough. As such, the aether in front of the particle would become compressed to distances shorter than 1 Planck length. This is where the energy not corresponding to classical mechanics is actually being spent. As for the isotropy and aether wind issues, under such conditions as what I've described here, why would it matter? The aether wind itself is not likely to produce any measurable effects until the detectors are moving at relativistic speeds. Those effects are themselves known as Special Relativity. So since Special Relativity is verified, it should be true that if an aether wind does exist, then relativistic speeds relative to earth in the direction of the aether wind should require less energy than the same speeds at right angles to the wind, and those speeds would require less energy than the same speeds upwind. Does this not make sense? The difference would likely be minimal since it is doubtful that the total sum of all the orbital motions of the earth combined would be anywhere near a relativistic speed. Taking this view, the Michaelson-Morley experiment was doomed to failure since relative to the aether, the emitter emitted the light at an angle such that if the earth had suddenly stopped moving relative to the aether after the emission, the light would have missed the target. It's no different than considering what happens when you throw a ball from one car to the other when both are moving at 20 mph, ignoring atmospheric wind effects(since atmospheric wind doesn't pass through the ball). Now the question. Barring quantum physics (which is statistical where this model is deterministic), what's conceptually wrong with this model with respect to Relativity? See what I wrote above. Thanks Bill R. Please re-evaluate. Thanks R. |
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"Ranando King" wrote in message ... "Bill Hobba" wrote in message ... "Ranando King" wrote in message snipped Can I get your thoughts on something? Let's suppose for a second that aether does exist. For the sake of argument, we'll say that the aether has the following properties: it is particulate, it is massless, If it was massless then it would move at the speed of light in all FOR's - it is rather difficult to see how a medium moving at the speed of light can have something traveling relative to it (after all it is meant to be the wave carrier of light) at the speed of light. Hang on a sec. If it's massless, is it required to move? Yes - unless you wish to maintain an absurdity such that it is stationary in every frame. I would tend to state that "when it *does move*, it moves at the speed of light. What's more, when it does move, it doesn't go very far before giving up it's energy to the next aether particle and being forced back to its original position. If aether is the wave carrier of light, then the aether itself would be *required* to move at the speed of light when it moves in order to pass the energy on to the next particle of aether, wouldn't it? No. Think about waves in a spring. Particles in the spring move up and down but the wave propagates at a different speed and that speed is relative to the spring. The reason mass moves so much slower is because it's not possible for all of the aether particles that constitute a massive object to pass their energy forward to the next group of aether particles simultaneously. The more massive the object, the more difficult it is to pass all of the energy composing it forward. You are indulging flights of fancy assuming things to be correct we have no evidence for. it is arranged such that in the absense of energy (of any kind, matter included) each particle is 1 Planck unit away from its nearest neighbors, it is repulsed by its neighbors, a matter "particle" is the binding of a region of these to a single given high energy state, the motion of a "particle" through space is the movement of energy by means of energizing aether in front of the "particle" and de-energizing aether behind the "particle", propagation of EM is energetic wave motion through this aether. See what I wrote above. Please re-evaluate and try to consider the possibilities, regardless of how vaguely described here. I have. They do not fly. We should be able to set up a mental model from this. Hopefully it's complete enough for the questions I'll ask. It can be inferred from the speed of light in a vacuum that no energy exchanges ever occur in less than 1 Planck time. Couldn't this explain why relativistic effects occur? Think about it for a second. No one is denying it is impossible for an aether to exist - aether theories exist and are in accord with experiment. Did you mean "impossible" as you wrote, or did you mean "possible"? If you meant "impossible" then I don't understand the sentence. Impossible is the correct word. Aether models have been proposed that are in accord with experiment. That is not the point. The point is one does not have to exist and physics has gotten along without it for a century. If you want to propose a particular model go ahead (what you wrote above is not really a model - it is simply a lot of vague ideas cobbled together - a model can make quantitative predictions). Ilja's GLET is an example of what an actual model would look like. If the point is truely about what doesn't have to exist, then in the same mode of thinking, neither does science. Life will proceed just fine without us humans trying to figure out how it all works. Life continued on this planet for thousands of years without science. :-) Your point being? That was admittedly a bit sarcastic, but the point is that the mathematical models provided by quantum physics are admittedly very much incomplete. Why? The idea that light travels at the same speed in all reference frames is an axiom. Nope - it is a deduction from conservation of charge among other things. As has been pointed out many times on sci.physics.relativity the second axiom is irrelevant in deriving the Lorentz transformations - the constant that appears in the equations follows purely from the POR. The fixing of that value to be the speed of light comes from many considerations - the most fundamental one probably being charge conservation. It may likely pan out to be true if we can ever travel at relativistic speeds and test the theory. But whether it is true or not, it is a curiosity. It's natural for one to wonder why. May I suggest you examine derivations that do not assume the speed of light? See http://arxiv.org/abs/physics/0110076, and ancient, but I still think excellent post by Tom Roberts http://groups.google.com/groups?hl=e....ih.lucent.com and chapter 10 of http://www.courses.fas.harvard.edu/~phys16/Textbook/ under the heading of Relativity without c. Its also counter-intuitive that at relativistic speeds, an increasing amount of the energy you put into accelerating gets diverted to increasing inertia, but only in the direction of motion. When one asks why such things happen, the first thing one receives is the mathematics of Relativity. When one points out that this is merely a model of what's happening and not the reason, then one is told that this is just how spacetime works. You are confused about what an explanation is. If assumption A logically implies B then A has explained B - it makes no difference if that train of logic includes mathematics or not. I have seen similar arguments many times. What I ask is what makes the mathematics of relativity different than the mathematics of Euclidian geometry used by surveyors? Why is it questioned and what surveyors do not? I, for one, can no more accept such a rather escapist answer Then I suggest you think harder about the scientific method. Thanks Bill than R.A. Milikan could accept that the then yet to be named electron was as massive as a hydrogen atom after measuring its charge. The bottom line here is that a great many properties are attributed to the nothingness of spacetime. Those of us entertaining the aether notion are simply asking how "nothing" can have properties. Particles moving through aether would experience something similar to the sound barrier as they approach the speed of light because the aether simply is not able to "pass through" the particle fast enough. As such, the aether in front of the particle would become compressed to distances shorter than 1 Planck length. This is where the energy not corresponding to classical mechanics is actually being spent. As for the isotropy and aether wind issues, under such conditions as what I've described here, why would it matter? The aether wind itself is not likely to produce any measurable effects until the detectors are moving at relativistic speeds. Those effects are themselves known as Special Relativity. So since Special Relativity is verified, it should be true that if an aether wind does exist, then relativistic speeds relative to earth in the direction of the aether wind should require less energy than the same speeds at right angles to the wind, and those speeds would require less energy than the same speeds upwind. Does this not make sense? The difference would likely be minimal since it is doubtful that the total sum of all the orbital motions of the earth combined would be anywhere near a relativistic speed. Taking this view, the Michaelson-Morley experiment was doomed to failure since relative to the aether, the emitter emitted the light at an angle such that if the earth had suddenly stopped moving relative to the aether after the emission, the light would have missed the target. It's no different than considering what happens when you throw a ball from one car to the other when both are moving at 20 mph, ignoring atmospheric wind effects(since atmospheric wind doesn't pass through the ball). Now the question. Barring quantum physics (which is statistical where this model is deterministic), what's conceptually wrong with this model with respect to Relativity? See what I wrote above. Thanks Bill R. Please re-evaluate. Thanks R. |
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"Bill Hobba" wrote in message
... "Ranando King" wrote in message ... "Bill Hobba" wrote in message ... "Ranando King" wrote in message snipped Can I get your thoughts on something? Let's suppose for a second that aether does exist. For the sake of argument, we'll say that the aether has the following properties: it is particulate, it is massless, If it was massless then it would move at the speed of light in all FOR's - it is rather difficult to see how a medium moving at the speed of light can have something traveling relative to it (after all it is meant to be the wave carrier of light) at the speed of light. Hang on a sec. If it's massless, is it required to move? Yes - unless you wish to maintain an absurdity such that it is stationary in every frame. I have no need for such an absurdity. Just out of curiosity, is calling something stationary in every reference frame any less absurd than saying something moves at the same speed in every reference frame? The only difference is that in the first case the speed is 0. It doesn't really matter what that speed is. The statement is altogether absurd... and yet, so much science is predicated on it. The bad part is that this particular absurdity, where that speed is the speed of light, pans out in experiments.... so far, and it certainly checks out in the mathematical models. One of the questions that arise because of this factual absurdity is "What's physically causing this absurdity?". The mathematical models are currently ineffective at answering this question. They merey re-inforce the fact that this absurdity must exist. I would tend to state that "when it *does move*, it moves at the speed of light. What's more, when it does move, it doesn't go very far before giving up it's energy to the next aether particle and being forced back to its original position. If aether is the wave carrier of light, then the aether itself would be *required* to move at the speed of light when it moves in order to pass the energy on to the next particle of aether, wouldn't it? No. Think about waves in a spring. Particles in the spring move up and down but the wave propagates at a different speed and that speed is relative to the spring. That's nice for the surface of the spring, but imagine a ridiculously large (infinite if you like) sphere filled with water so that there is nothing but water inside and the water occupies the entire volume. Now imagine a wave beginning somewhere near the center of that volume. What is the motion of the particles in that case? Treating space & time separately (which I know is a bad deal), you've got to account for 3D instead of the 2D surface of water. The reason mass moves so much slower is because it's not possible for all of the aether particles that constitute a massive object to pass their energy forward to the next group of aether particles simultaneously. The more massive the object, the more difficult it is to pass all of the energy composing it forward. You are indulging flights of fancy assuming things to be correct we have no evidence for. I don't deny you that fact. This is all mere speculation. Question. Isn't M-theory also speculation? We can't even come close to generating the energy necessary to validate Super String Theory.... And yet, physicists continue to speculate. Aren't virtual particles speculation? Much like aether, virtual particles aren't even observable (because they don't exist long enough).... And yet, physicists continue to speculate. Maybe there's something to this whole business of indulging flights of fancy. Before J.J. Thomson's experiment, the notion that electricity was a stream of particles was a mere flight of fancy. The point is that sometimes you have to develop an idea before you can find evidence for it. You know as well as I do that the basic order of science is Theorize, Model, Experiment, Revise, Re-model, Re-experiment, Repeat ad nauseum. it is arranged such that in the absense of energy (of any kind, matter included) each particle is 1 Planck unit away from its nearest neighbors, it is repulsed by its neighbors, a matter "particle" is the binding of a region of these to a single given high energy state, the motion of a "particle" through space is the movement of energy by means of energizing aether in front of the "particle" and de-energizing aether behind the "particle", propagation of EM is energetic wave motion through this aether. See what I wrote above. Please re-evaluate and try to consider the possibilities, regardless of how vaguely described here. I have. They do not fly. We should be able to set up a mental model from this. Hopefully it's complete enough for the questions I'll ask. It can be inferred from the speed of light in a vacuum that no energy exchanges ever occur in less than 1 Planck time. Couldn't this explain why relativistic effects occur? Think about it for a second. No one is denying it is impossible for an aether to exist - aether theories exist and are in accord with experiment. Did you mean "impossible" as you wrote, or did you mean "possible"? If you meant "impossible" then I don't understand the sentence. Impossible is the correct word. Aether models have been proposed that are in accord with experiment. That is not the point. The point is one does not have to exist and physics has gotten along without it for a century. If you want to propose a particular model go ahead (what you wrote above is not really a model - it is simply a lot of vague ideas cobbled together - a model can make quantitative predictions). Ilja's GLET is an example of what an actual model would look like. If the point is truely about what doesn't have to exist, then in the same mode of thinking, neither does science. Life will proceed just fine without us humans trying to figure out how it all works. Life continued on this planet for thousands of years without science. :-) Your point being? That was admittedly a bit sarcastic, but the point is that the mathematical models provided by quantum physics are admittedly very much incomplete. Why? I'll give you an example. A speck of dust on my desk is too big to behave like a quantum object. C70, or even fluorofullerene (really big molecules!) are small enough to display quantum behavior. So where's the line? What physically causes objects to stop displaying quantum effects? Mind you, if you say observation, I'm going to expect a definition. The idea that light travels at the same speed in all reference frames is an axiom. Nope - it is a deduction from conservation of charge among other things. As has been pointed out many times on sci.physics.relativity the second axiom is irrelevant in deriving the Lorentz transformations - the constant that appears in the equations follows purely from the POR. The fixing of that value to be the speed of light comes from many considerations - the most fundamental one probably being charge conservation. Again, the mathematical model. Where's the physical model that's supposed to accompany it? It may likely pan out to be true if we can ever travel at relativistic speeds and test the theory. But whether it is true or not, it is a curiosity. It's natural for one to wonder why. May I suggest you examine derivations that do not assume the speed of light? See http://arxiv.org/abs/physics/0110076, and ancient, but I still think excellent post by Tom Roberts http://groups.google.com/groups?hl=e....ih.lucent.com and chapter 10 of http://www.courses.fas.harvard.edu/~phys16/Textbook/ under the heading of Relativity without c. This is as I said above, the math confirms that something seemingly absurd must be true. Now it's up to physicists to find the physical mechanism that enforces this truth. Its also counter-intuitive that at relativistic speeds, an increasing amount of the energy you put into accelerating gets diverted to increasing inertia, but only in the direction of motion. When one asks why such things happen, the first thing one receives is the mathematics of Relativity. When one points out that this is merely a model of what's happening and not the reason, then one is told that this is just how spacetime works. You are confused about what an explanation is. If assumption A logically implies B then A has explained B - it makes no difference if that train of logic includes mathematics or not. I have seen similar arguments many times. What I ask is what makes the mathematics of relativity different than the mathematics of Euclidian geometry used by surveyors? Why is it questioned and what surveyors do not? Nope. You're confused about what I'm seeking an explanation for. If assumption A logically implies B then A has explained B. If B is later proven to be correct then A is no longer merely assumption and must now be proven. This is how science has operated for centuries. Remember, mathematical justification + physical observation = proof. That the speed of light is constant in all frames has all of the mathematical justification it needs... and then some. It's time for someone to expose the mechanism that makes it work. I, for one, can no more accept such a rather escapist answer Then I suggest you think harder about the scientific method. Thanks Bill I think I'll let your reply to this be the last in this subthread while I try to put together a mathematical model to express the ideas I have on this issue. R. |
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"Ranando King" wrote in message ... "Bill Hobba" wrote in message ... "Ranando King" wrote in message ... "Bill Hobba" wrote in message ... "Ranando King" wrote in message snipped Can I get your thoughts on something? Let's suppose for a second that aether does exist. For the sake of argument, we'll say that the aether has the following properties: it is particulate, it is massless, If it was massless then it would move at the speed of light in all FOR's - it is rather difficult to see how a medium moving at the speed of light can have something traveling relative to it (after all it is meant to be the wave carrier of light) at the speed of light. Hang on a sec. If it's massless, is it required to move? Yes - unless you wish to maintain an absurdity such that it is stationary in every frame. I have no need for such an absurdity. If you wish to maintain particles of zero mass can be stationary you do. Just out of curiosity, is calling something stationary in every reference frame any less absurd than saying something moves at the same speed in every reference frame? Are you serious? Particles stationary in all frames is trivially contradicted by the very definition of an inertial frame (they move at constant velocity relative to each other so a particle stationary at a point must move at constant velocity in a frame moving at constant velocity by the very definition of a frame moving at constant velocity - which is all stationary points in the frame are viewed as moving at constant velocity) - the speed light being the same is not - in fact to a high level of accuracy it is found to be true. The only difference is that in the first case the speed is 0. It doesn't really matter what that speed is. The statement is altogether absurd... and yet, so much science is predicated on it. See what I wrote above. The bad part is that this particular absurdity, where that speed is the speed of light, pans out in experiments.... so far, and it certainly checks out in the mathematical models. One of the questions that arise because of this factual absurdity is "What's physically causing this absurdity?". If you read the links I gave you would know the answer - the POR The only thing it does not explain is why it is finite - that is where other experimental evidence (such as local charge conservation) must be invoked. The mathematical models are currently ineffective at answering this question. They are fully effective - you for some reason are simply unable to see it. They merey re-inforce the fact that this absurdity must exist. I would tend to state that "when it *does move*, it moves at the speed of light. What's more, when it does move, it doesn't go very far before giving up it's energy to the next aether particle and being forced back to its original position. If aether is the wave carrier of light, then the aether itself would be *required* to move at the speed of light when it moves in order to pass the energy on to the next particle of aether, wouldn't it? No. Think about waves in a spring. Particles in the spring move up and down but the wave propagates at a different speed and that speed is relative to the spring. That's nice for the surface of the spring, but imagine a ridiculously large (infinite if you like) sphere filled with water so that there is nothing but water inside and the water occupies the entire volume. Now imagine a wave beginning somewhere near the center of that volume. What is the motion of the particles in that case? Vibrational. Treating space & time separately (which I know is a bad deal), you've got to account for 3D instead of the 2D surface of water. So? They still move at a different speed than the waves - in fact they are required to accelerate - something a particle of zero mass can not do since it moves at the velocity of light always. The reason mass moves so much slower is because it's not possible for all of the aether particles that constitute a massive object to pass their energy forward to the next group of aether particles simultaneously. The more massive the object, the more difficult it is to pass all of the energy composing it forward. You are indulging flights of fancy assuming things to be correct we have no evidence for. I don't deny you that fact. This is all mere speculation. Question. Isn't M-theory also speculation? I do not deny that. The difference is it is easy to see your flights of fancy are wrong - M theory is another matter. We can't even come close to generating the energy necessary to validate Super String Theory.... And yet, physicists continue to speculate. Aren't virtual particles speculation? Much like aether, virtual particles aren't even observable (because they don't exist long enough).... And yet, physicists continue to speculate. Maybe there's something to this whole business of indulging flights of fancy. Before J.J. Thomson's experiment, the notion that electricity was a stream of particles was a mere flight of fancy. The point is that sometimes you have to develop an idea before you can find evidence for it. You know as well as I do that the basic order of science is Theorize, Model, Experiment, Revise, Re-model, Re-experiment, Repeat ad nauseum. it is arranged such that in the absense of energy (of any kind, matter included) each particle is 1 Planck unit away from its nearest neighbors, it is repulsed by its neighbors, a matter "particle" is the binding of a region of these to a single given high energy state, the motion of a "particle" through space is the movement of energy by means of energizing aether in front of the "particle" and de-energizing aether behind the "particle", propagation of EM is energetic wave motion through this aether. See what I wrote above. Please re-evaluate and try to consider the possibilities, regardless of how vaguely described here. I have. They do not fly. We should be able to set up a mental model from this. Hopefully it's complete enough for the questions I'll ask. It can be inferred from the speed of light in a vacuum that no energy exchanges ever occur in less than 1 Planck time. Couldn't this explain why relativistic effects occur? Think about it for a second. No one is denying it is impossible for an aether to exist - aether theories exist and are in accord with experiment. Did you mean "impossible" as you wrote, or did you mean "possible"? If you meant "impossible" then I don't understand the sentence. Impossible is the correct word. Aether models have been proposed that are in accord with experiment. That is not the point. The point is one does not have to exist and physics has gotten along without it for a century. If you want to propose a particular model go ahead (what you wrote above is not really a model - it is simply a lot of vague ideas cobbled together - a model can make quantitative predictions). Ilja's GLET is an example of what an actual model would look like. If the point is truely about what doesn't have to exist, then in the same mode of thinking, neither does science. Life will proceed just fine without us humans trying to figure out how it all works. Life continued on this planet for thousands of years without science. :-) Your point being? That was admittedly a bit sarcastic, but the point is that the mathematical models provided by quantum physics are admittedly very much incomplete. Why? I'll give you an example. A speck of dust on my desk is too big to behave like a quantum object. C70, or even fluorofullerene (really big molecules!) are small enough to display quantum behavior. So where's the line? What physically causes objects to stop displaying quantum effects? Mind you, if you say observation, I'm going to expect a definition. The theory postulates that the line can be drawn somewhere. Logical consistency and/or completeness does not demand it tells us exactly where - indeed any theory has unanswered questions. Singling out this for QM and saying it is incomplete because it does not answer it would lead you to logically claim any theory is incomplete Recent research has shown quantum state diffusion at least partially answers the question. But anyway it is only an issue for the collapse of a wavefuntion - modern interpretations see that purely as a calculation device - not as something that actually occurs - http://quantum.phys.cmu.edu/histories1.html 'By contrast, in the consistent histories approach probabilities are introduced as part of the axiomatic foundations of quantum theory, with no necessary connection with measurements. Quantum dynamical processes are inherently stochastic, and the probabilities can be calculated using a generalization of the rule originally introduced by Born. Because it does not employ measurement as a fundamental principle, the consistent histories approach allows one to analyze, from a fully quantum-mechanical perspective, what actually goes on in a physical measurement process. For example, one can show that a properly constructed measuring apparatus will reveal a property that the measured system had before the measurement, and might well have lost during the measurement process. The probabilities calculated for measurement outcomes (pointer positions) are identical to those obtained by the usual rules found in textbooks. What is different is that by employing suitable families of histories one can show that measurements actually measure something that is there, rather than producing a mysterious collapse of a wave function.' The above is not to say that Einstein did not have a point when he believed it was incomplete. The issue is if the theory logically forces such a view on us - the answer is it does not - as Einstein found out when he tried to do it and Bohr (and others) demolished his objections. In the end he admitted is was logically consistent - but still believed it was incomplete. BTW as an aside Einstein never said QM was wrong - merely incomplete. I am of the camp that believes if Einstein was alive today he would change his view. The idea that light travels at the same speed in all reference frames is an axiom. Nope - it is a deduction from conservation of charge among other things. As has been pointed out many times on sci.physics.relativity the second axiom is irrelevant in deriving the Lorentz transformations - the constant that appears in the equations follows purely from the POR. The fixing of that value to be the speed of light comes from many considerations - the most fundamental one probably being charge conservation. Again, the mathematical model. Where's the physical model that's supposed to accompany it? What is the physical model that accompanies Euclidian geometry? I have never seen a point of no size or a line of zero width. It may likely pan out to be true if we can ever travel at relativistic speeds and test the theory. But whether it is true or not, it is a curiosity. It's natural for one to wonder why. May I suggest you examine derivations that do not assume the speed of light? See http://arxiv.org/abs/physics/0110076, and ancient, but I still think excellent post by Tom Roberts http://groups.google.com/groups?hl=e....ih.lucent.com and chapter 10 of http://www.courses.fas.harvard.edu/~phys16/Textbook/ under the heading of Relativity without c. This is as I said above, the math confirms that something seemingly absurd must be true. Now it's up to physicists to find the physical mechanism that enforces this truth. You fail to understand what an explanation is. As I have said if the assumptions of a theory (let us call it A) logically implies something (let us call it B) then A has explained B. Your assistance that is does so by something you call physical is simply a gut reaction to things that is to you counter intuitive. It is an obvious irrelevancy. Its also counter-intuitive that at relativistic speeds, an increasing amount of the energy you put into accelerating gets diverted to increasing inertia, but only in the direction of motion. When one asks why such things happen, the first thing one receives is the mathematics of Relativity. When one points out that this is merely a model of what's happening and not the reason, then one is told that this is just how spacetime works. You are confused about what an explanation is. If assumption A logically implies B then A has explained B - it makes no difference if that train of logic includes mathematics or not. I have seen similar arguments many times. What I ask is what makes the mathematics of relativity different than the mathematics of Euclidian geometry used by surveyors? Why is it questioned and what surveyors do not? Nope. You're confused about what I'm seeking an explanation for. If assumption A logically implies B then A has explained B. If B is later proven to be correct then A is no longer merely assumption and must now be proven. Come again. If B is proven true (and only some statements can be proven true - eg a certain time and at a certain place a magnet will attract iron can be proven true - the statement a magnet will always and anywhere attract iron can not) it in no way changes the status of A. Only if B is proven false will it prove that A must be false. Bill This is how science has operated for centuries. Remember, mathematical justification + physical observation = proof. That the speed of light is constant in all frames has all of the mathematical justification it needs... and then some. It's time for someone to expose the mechanism that makes it work. I, for one, can no more accept such a rather escapist answer Then I suggest you think harder about the scientific method. Thanks Bill I think I'll let your reply to this be the last in this subthread while I try to put together a mathematical model to express the ideas I have on this issue. R. |
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