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Philosophy, Metaphysics & the Afterlife
new theory...
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<blockquote data-quote="Harte" data-source="post: 28573" data-attributes="member: 443"><p><strong>Re: new theory...</strong></p><p></p><p><div class='quotetop'>QUOTE(\"systemoftheuniverse\")</div></p><p> </p><p>SOU,</p><p>The speed that the magnetic waves propogate have absolutely nothing to do with the amount of force being applied to the magnet, For example, a refrigerator magnet will stick to your refrigerator, maybe even hold a note to your refrigerator (if you're lucky - they make them so weak these days). But these magnets will not pick up a car like the huge electromagnets at a junkyard will. Yet both magnets emit exactly the same kind of waves at exactly the same speeds. The difference is the magnetic force.</p><p> </p><p>For constant acceleration, you must apply constant force, F=ma. If you apply a force a little at a time, you can get "stepwise" acceleration, that is, speed up a little and coast, speed up some more and coast, etc. Your example of magnets on a wheel would work this way. The timing involved in turning the driving magnet on and off would be to turn it on at ever decreasing intervals (since your wheel is speeding up, it takes less time each lap for the wheel magnet to be in the right spot for acceleration from the drive magnet.) Eventually you could theoretically reach a pretty high speed. But remember, your wheel must be supported by something here, like bearings. That would limit your speed.</p><p> </p><p>Now, put your wheel in space so it needs no support, or you could use something like magnetic levitation to support the wheels' axle. This would eliminate friction (you'd have to be in a vacuum, air has friction too.) If it were possible to "get the timing right" as you put it, then the rotation of the wheel should be able to approach lightspeed. But here is where you would run into trouble.</p><p> </p><p>The faster you go, relative to an observer that is stationary with respect to your motion, the greater your mass grows (as measured by that observer.) This is an inevitable consequence of the Special Theory of Relativity, verified many times over by physicists (and doctoral candidates) from all over the world. Imagine that "you" are the magnet on the wheel, and the "observer" is the drive magnet in this setup. Then from the point of view of the drive (observer) magnet, the wheel (you) magnet is getting heavier and heavier. As you approach c, the mass of the wheel magnet(s) approaches infinity. Eventually you reach the point where the strength of the drive magnet is insignificant compared to the mass of the wheel magnet and your wheel no longer accelerates.</p><p> </p><p><div class='quotetop'>QUOTE(\"systemoftheuniverse\")</div></p><p> </p><p>This is a fairly good description of an electric motor, with a rotating EM field. This type of motor, which is common, was invented by Tesla.</p><p> </p><p><div class='quotetop'>QUOTE(\"systemoftheuniverse\")</div></p><p> </p><p>Other than the first phrase about the speed of light, this last part here is entirely accurate. The description of what would happen if you could reach the speed of light is pretty much exactly what Einstein said with Special Relativity.</p></blockquote><p></p>
[QUOTE="Harte, post: 28573, member: 443"] [b]Re: new theory...[/b] <div class='quotetop'>QUOTE(\"systemoftheuniverse\")</div> SOU, The speed that the magnetic waves propogate have absolutely nothing to do with the amount of force being applied to the magnet, For example, a refrigerator magnet will stick to your refrigerator, maybe even hold a note to your refrigerator (if you're lucky - they make them so weak these days). But these magnets will not pick up a car like the huge electromagnets at a junkyard will. Yet both magnets emit exactly the same kind of waves at exactly the same speeds. The difference is the magnetic force. For constant acceleration, you must apply constant force, F=ma. If you apply a force a little at a time, you can get "stepwise" acceleration, that is, speed up a little and coast, speed up some more and coast, etc. Your example of magnets on a wheel would work this way. The timing involved in turning the driving magnet on and off would be to turn it on at ever decreasing intervals (since your wheel is speeding up, it takes less time each lap for the wheel magnet to be in the right spot for acceleration from the drive magnet.) Eventually you could theoretically reach a pretty high speed. But remember, your wheel must be supported by something here, like bearings. That would limit your speed. Now, put your wheel in space so it needs no support, or you could use something like magnetic levitation to support the wheels' axle. This would eliminate friction (you'd have to be in a vacuum, air has friction too.) If it were possible to "get the timing right" as you put it, then the rotation of the wheel should be able to approach lightspeed. But here is where you would run into trouble. The faster you go, relative to an observer that is stationary with respect to your motion, the greater your mass grows (as measured by that observer.) This is an inevitable consequence of the Special Theory of Relativity, verified many times over by physicists (and doctoral candidates) from all over the world. Imagine that "you" are the magnet on the wheel, and the "observer" is the drive magnet in this setup. Then from the point of view of the drive (observer) magnet, the wheel (you) magnet is getting heavier and heavier. As you approach c, the mass of the wheel magnet(s) approaches infinity. Eventually you reach the point where the strength of the drive magnet is insignificant compared to the mass of the wheel magnet and your wheel no longer accelerates. <div class='quotetop'>QUOTE(\"systemoftheuniverse\")</div> This is a fairly good description of an electric motor, with a rotating EM field. This type of motor, which is common, was invented by Tesla. <div class='quotetop'>QUOTE(\"systemoftheuniverse\")</div> Other than the first phrase about the speed of light, this last part here is entirely accurate. The description of what would happen if you could reach the speed of light is pretty much exactly what Einstein said with Special Relativity. [/QUOTE]
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