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Ken S. Tucker wrote: Sue... wrote: wrote: sue jahn wrote: Sue: paraphrase style in brackets []. Woodward: Roughly, the modern instantaneous action argument goes as follows. In general relativity theory matter "there" tells space "here" how to curve, Sue: [induced dipoles there tell induced dipoles here their shape] and space "here" tells matter "here" how to move. Sue: [induced dipoles here attract induced dipoles there] (Matter "here" also tells space "there" how to curve.) Thus, in order to talk about any situation in dynamics we must specify the distribution and motion of matter throughout space. (Strictly speaking, we must provide "initial data" on some suitably chosen "three dimensional spacelike hypersurface".) The usual field equations for gravity (Einstein's equations) are not enough, by themselves, to do this it turns out. Because of the finite propagation velocity built into them, we might specify some distribution of matter that subsequently leads to idiotic results. To make sure this doesn't happen, our distribution of matter has to satisfy some additional equations called "constraint" equations. The neat thing about these constraint equations is that, unlike the field equations, they're instantaneous. (Technically, they're "elliptic" rather than "hyperbolic" differential equations.) It's then claimed that inertia is conveyed by the constraint equations -- instantaneously. The use of constraint equations to communicate real physical influences instantaneously is justified by appeal to the instantaneous propagation of stationary electric fields in the Coulomb gauge. Appologies to: James F. Woodward http://chaos.fullerton.edu/~jimw/general/inertia/ http://chaos.fullerton.edu/~jimw/gen...ertia/nord.htm The mystery in such a substitution is what mechanism similar to... ============ RA AR +- -+ -+ +- http://www.elmhurst.edu/~chm/vchembo...ntermolec.html http://web.umr.edu/~gbert/INTERACT/intermolecular.HTM http://polymer.bu.edu/Wasser/robert/work/node9.html ============ ...what mechanism can increase the attractive force before an object and decrease the attractive force behind an object, in proportion to the applied force of acceleration? Sue... http://hyperphysics.phy-astr.gsu.edu...ric/elepe.html http://hyperphysics.phy-astr.gsu.edu...ic/elefor.html http://arxiv.org/abs/physics/0204034 -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ xxein: [Sue: ...what mechanism can increase the attractive force before an object and decrease the attractive force behind an object, in proportion to the applied force of acceleration?] Gravity. The multi-orbital behavior 'moons'. Acceleration is not limited to speed. You wish to use the term "force" for this? I don't particularly mind, but Einteinians do. Can you define acceleration in a many-bodied gravitational system? Actually, after a little prodding and harassment from KST ),If you think I'm sexist, you should meet me in person, I'm worse, :-). I think we can. If we gauge the force used to separate a pair of planets or Cavendish weights, it is not hard to see the mechanism of induced dipoles providing the reaction force we measure and a conformance with both the inverse square law and the the acceleration law. 1/r^2 a = 1/2 mv^2 When the two masses are far apart and we use a thin wire or rod to conduct the force between, is is not so easy to see how induced dipoles enter into the reaction force or 'inertia'. The solution might be very simple. All the other induced dipoles in the universe have a 'grip' on the masses that will change only as they approach more populus regions of space. Some may object over concerns of instaneous action at distance but that doesn't need to apply where the coupling to existing Coulomb lines are locally modifed as the structure of the induced dipole adapts to the field. I think that's the ticket. That adaptation results in a gravitational attraction as a GR modification to electrostratic force. So... your holistic, or all is one, nutshell notion seems it could be considered integral to inertial behavior. Yes, well written, that's what I think. Mach's Principle is more clearly understood using Maxwell's eqs when GR is accounted for. Unfortunately, if we are correct, it would predict a null result for the LIGO experiment, and sofar that is the result. IOW's the g-waves emit in EM spectrum. Sue... If you want I'll expand on the above. ... While it is true that relativity theory describes a timely form of cause and effect, it is just locally applicable with locally applied time. It is very good... if you like a local physics that cannot describe or correlate to quantums or strings. (I hate strings) In a nutshell, we are in one, and nobody seems to realise it. A preface in an abstract stating the UNIVERSE=1 is a very reasonble invariant, I've used it. Agreeably Ken xxein: UNIVERSE=1 what? Stasis or dymamic? (Just an aside.) I'll trust that you can help me with the below. I am missing one (only one? I wish!) piece of math. Given a simple G, M (in meters) and R, I can figure the 'ideal' timerates, escape velocities etc., but I don't know how to figure out a specific velocity under a specific circumstance --- that being: Even though the integration and derivitive calc for acceleration, velocity and time is very straightforward wrt a particular R, I don't know the calculus to figure the grander scale where R varies. The prime example is - how fast is a rock moving if dropped from 2 Earth radii to just as it approaches 1 Earth radii? Rem: this is the ideal with no atmosphere and no otherwise motion between them (just a pure m(1),m(test). Having a general form of this with G, M, R and c will help me tie a lot of loose ends. The last time I asked (a few years ago), Ande452 only gave me a hint as to powers (like I was supposed to know how to use them in a calc - or I should take calc(XVI)). He acted like it was a mundane piece of information with no scientific value except for a specific calculation. Well, I sorely miss this relation and feel in my bones that it is very important relation that may be a semi-Rosetta stone for understanding this universe. I also feel that it can spell trouble for SR-GR in that it might expose an unequality of great proportion if given a proper consideration. Otoh, it may help unite the different theories. But, without any regard to any event, I want it as a tool to play with. Can you express it so, or cite? This would be like the best of sex to me (temporarily, until I need more). Thx in advance for whatever you can provide. I just hope it is not theory dependent (?). |
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Ken S. Tucker wrote: Sue... wrote: wrote: sue jahn wrote: Sue: paraphrase style in brackets []. Woodward: Roughly, the modern instantaneous action argument goes as follows. In general relativity theory matter "there" tells space "here" how to curve, Sue: [induced dipoles there tell induced dipoles here their shape] and space "here" tells matter "here" how to move. Sue: [induced dipoles here attract induced dipoles there] (Matter "here" also tells space "there" how to curve.) Thus, in order to talk about any situation in dynamics we must specify the distribution and motion of matter throughout space. (Strictly speaking, we must provide "initial data" on some suitably chosen "three dimensional spacelike hypersurface".) The usual field equations for gravity (Einstein's equations) are not enough, by themselves, to do this it turns out. Because of the finite propagation velocity built into them, we might specify some distribution of matter that subsequently leads to idiotic results. To make sure this doesn't happen, our distribution of matter has to satisfy some additional equations called "constraint" equations. The neat thing about these constraint equations is that, unlike the field equations, they're instantaneous. (Technically, they're "elliptic" rather than "hyperbolic" differential equations.) It's then claimed that inertia is conveyed by the constraint equations -- instantaneously. The use of constraint equations to communicate real physical influences instantaneously is justified by appeal to the instantaneous propagation of stationary electric fields in the Coulomb gauge. Appologies to: James F. Woodward http://chaos.fullerton.edu/~jimw/general/inertia/ http://chaos.fullerton.edu/~jimw/gen...ertia/nord.htm The mystery in such a substitution is what mechanism similar to... ============ RA AR +- -+ -+ +- http://www.elmhurst.edu/~chm/vchembo...ntermolec.html http://web.umr.edu/~gbert/INTERACT/intermolecular.HTM http://polymer.bu.edu/Wasser/robert/work/node9.html ============ ...what mechanism can increase the attractive force before an object and decrease the attractive force behind an object, in proportion to the applied force of acceleration? Sue... http://hyperphysics.phy-astr.gsu.edu...ric/elepe.html http://hyperphysics.phy-astr.gsu.edu...ic/elefor.html http://arxiv.org/abs/physics/0204034 -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ xxein: [Sue: ...what mechanism can increase the attractive force before an object and decrease the attractive force behind an object, in proportion to the applied force of acceleration?] Gravity. The multi-orbital behavior 'moons'. Acceleration is not limited to speed. You wish to use the term "force" for this? I don't particularly mind, but Einteinians do. Can you define acceleration in a many-bodied gravitational system? Actually, after a little prodding and harassment from KST ),If you think I'm sexist, you should meet me in person, I'm worse, :-). I think we can. If we gauge the force used to separate a pair of planets or Cavendish weights, it is not hard to see the mechanism of induced dipoles providing the reaction force we measure and a conformance with both the inverse square law and the the acceleration law. 1/r^2 a = 1/2 mv^2 When the two masses are far apart and we use a thin wire or rod to conduct the force between, is is not so easy to see how induced dipoles enter into the reaction force or 'inertia'. The solution might be very simple. All the other induced dipoles in the universe have a 'grip' on the masses that will change only as they approach more populus regions of space. Some may object over concerns of instaneous action at distance but that doesn't need to apply where the coupling to existing Coulomb lines are locally modifed as the structure of the induced dipole adapts to the field. I think that's the ticket. That adaptation results in a gravitational attraction as a GR modification to electrostratic force. So... your holistic, or all is one, nutshell notion seems it could be considered integral to inertial behavior. Yes, well written, that's what I think. Mach's Principle is more clearly understood using Maxwell's eqs when GR is accounted for. Unfortunately, if we are correct, it would predict a null result for the LIGO experiment, and sofar that is the result. IOW's the g-waves emit in EM spectrum. Sue... If you want I'll expand on the above. ... While it is true that relativity theory describes a timely form of cause and effect, it is just locally applicable with locally applied time. It is very good... if you like a local physics that cannot describe or correlate to quantums or strings. (I hate strings) In a nutshell, we are in one, and nobody seems to realise it. A preface in an abstract stating the UNIVERSE=1 is a very reasonble invariant, I've used it. Agreeably Ken xxein: UNIVERSE=1 what? Stasis or dymamic? (Just an aside.) I'll trust that you can help me with the below. I am missing one (only one? I wish!) piece of math. Given a simple G, M (in meters) and R, I can figure the 'ideal' timerates, escape velocities etc., but I don't know how to figure out a specific velocity under a specific circumstance --- that being: Even though the integration and derivitive calc for acceleration, velocity and time is very straightforward wrt a particular R, I don't know the calculus to figure the grander scale where R varies. The prime example is - how fast is a rock moving if dropped from 2 Earth radii to just as it approaches 1 Earth radii? Rem: this is the ideal with no atmosphere and no otherwise motion between them (just a pure m(1),m(test). Having a general form of this with G, M, R and c will help me tie a lot of loose ends. Ahhh... you want to play hard-ball by putting the term 'c' in the relation. We can get there from a global assumption about conservation like e = mc^2. Look at KST's evolution above whe For example, take a pair of charges "a" and "b" and they have some configurational energy, p = a*b/s, in ergs for example. Slap the behind (dividing by volume) and get the energy density, T00= p/s^3 == a*b/s^4. Now, pause and ponder this, T00= (a/s^2)*(b/s^2) = E(a)*E(b) = a*b/s^4, where E(a) & E(b) are Electric fields of charge "a" and some other charges. "the above departs from the classical solution to EFE's that uses a continum, but who cares, that's pretty junky now. " KST has good instincts about finding the shortest path to a solution but that grand assumption about the conservation of energy in the universe is troubling? But you'd rather see the evolution begin with universe having an impedance of 377 ohms, as in this relation? http://physics.nist.gov/cuu/Images/alphaeq.gif from: http://physics.nist.gov/cuu/Constants/alpha.html Here is such an evolution that is incomplete. It considers the forces which diminish by 1/r, 1/r^2 and 1/r^3 anisotropcally. 'Electromagnetic energy and momentum ' http://farside.ph.utexas.edu/teachin...es/node90.html You want rigorous field equations that will include forces diminishing by up to 1/r^12 so can see where the Coulomb force is a trillon, trillon, trillon times greater than gravity and inertia? http://hyperphysics.phy-astr.gsu.edu...ic/elefor.html Ha! ROFL... That could end up looking like: 'The Ewald Sum' http://www.earth.ox.ac.uk/~keithr/mo...al/node11.html or you might need a big computer http://www.kfa-juelich.de/zam/ZAMPeo...hing/UNAM_2005 The last time I asked (a few years ago), Ande452 only gave me a hint as to powers (like I was supposed to know how to use them in a calc - or I should take calc(XVI)). He acted like it was a mundane piece of information with no scientific value except for a specific calculation. Well, I sorely miss this relation and feel in my bones that it is very important relation that may be a semi-Rosetta stone for understanding this universe. I also feel that it can spell trouble for SR-GR in that it might expose an unequality of great proportion if given a proper consideration. It seems it would spell trouble for GR SR because they are not well behaved when things move at other than c. Otoh, it may help unite the different theories. Yes, at least on a macro scale it seem to move in the right direction. But, without any regard to any event, I want it as a tool to play with. Is this a fair name for the tool? "Long Range Interactions in Many-Particle Simulation" (pdf) P. Gibbon and G. Sutmann. http://www.fz-juelich.de/zam/datapoo...long_range.pdf Can you express it so, or cite? This would be like the best of sex to me (temporarily, until I need more). Thx in advance for whatever you can provide. I just hope it is not theory dependent (?). The forces between dipoles is a rather simple and well established 'theory'. ;-) Sue... |
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Ken S. Tucker wrote: wrote: [...] A preface in an abstract stating the UNIVERSE=1 is a very reasonble invariant, I've used it. Agreeably Ken xxein: UNIVERSE=1 what? Stasis or dymamic? (Just an aside.) Even in organic terms, you or me, an ant or a bee has 1 universe. I'll trust that you can help me with the below. I am missing one (only one? I wish!) piece of math. Given a simple G, M (in meters) and R, I can figure the 'ideal' timerates, escape velocities etc., but I don't know how to figure out a specific velocity under a specific circumstance --- that being: Even though the integration and derivitive calc for acceleration, velocity and time is very straightforward wrt a particular R, I don't know the calculus to figure the grander scale where R varies. The prime example is - how fast is a rock moving if dropped from 2 Earth radii to just as it approaches 1 Earth radii? Rem: this is the ideal with no atmosphere and no otherwise motion between them (just a pure m(1),m(test). Having a general form of this with G, M, R and c will help me tie a lot of loose ends. That type of question is important in *Celestrial Mechanics*, Escape Velocity = sqrt(2GM/R) is what you want to understand. xxein: No. If dropped from 2R instead of infinity. Like if you drop something from the Empire State Bldg. instead of ten meters the splat velocity will be greater. Sqrt(2GM/R) is a drop from infinity. What is the splat velocity from 2R to R? Remember that R changes throughout the fall. The sqrt(2GM/R)is probably a math shorthand for some intergral that indicates "from R(=inf) to R(=surface of a mass), splat v=sqrt(2GM/R)". Repeat with "from R(=2R) to R(=X=any point above or including the surface of a mass), splat v=???". Do you understand what I am asking now? |
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Sue... wrote: wrote: Ken S. Tucker wrote: Sue... wrote: wrote: sue jahn wrote: Sue: paraphrase style in brackets []. Woodward: Roughly, the modern instantaneous action argument goes as follows. In general relativity theory matter "there" tells space "here" how to curve, Sue: [induced dipoles there tell induced dipoles here their shape] and space "here" tells matter "here" how to move. Sue: [induced dipoles here attract induced dipoles there] (Matter "here" also tells space "there" how to curve.) Thus, in order to talk about any situation in dynamics we must specify the distribution and motion of matter throughout space. (Strictly speaking, we must provide "initial data" on some suitably chosen "three dimensional spacelike hypersurface".) The usual field equations for gravity (Einstein's equations) are not enough, by themselves, to do this it turns out. Because of the finite propagation velocity built into them, we might specify some distribution of matter that subsequently leads to idiotic results. To make sure this doesn't happen, our distribution of matter has to satisfy some additional equations called "constraint" equations. The neat thing about these constraint equations is that, unlike the field equations, they're instantaneous. (Technically, they're "elliptic" rather than "hyperbolic" differential equations.) It's then claimed that inertia is conveyed by the constraint equations -- instantaneously. The use of constraint equations to communicate real physical influences instantaneously is justified by appeal to the instantaneous propagation of stationary electric fields in the Coulomb gauge. Appologies to: James F. Woodward http://chaos.fullerton.edu/~jimw/general/inertia/ http://chaos.fullerton.edu/~jimw/gen...ertia/nord.htm The mystery in such a substitution is what mechanism similar to... ============ RA AR +- -+ -+ +- http://www.elmhurst.edu/~chm/vchembo...ntermolec.html http://web.umr.edu/~gbert/INTERACT/intermolecular.HTM http://polymer.bu.edu/Wasser/robert/work/node9.html ============ ...what mechanism can increase the attractive force before an object and decrease the attractive force behind an object, in proportion to the applied force of acceleration? Sue... http://hyperphysics.phy-astr.gsu.edu...ric/elepe.html http://hyperphysics.phy-astr.gsu.edu...ic/elefor.html http://arxiv.org/abs/physics/0204034 -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ xxein: [Sue: ...what mechanism can increase the attractive force before an object and decrease the attractive force behind an object, in proportion to the applied force of acceleration?] Gravity. The multi-orbital behavior 'moons'. Acceleration is not limited to speed. You wish to use the term "force" for this? I don't particularly mind, but Einteinians do. Can you define acceleration in a many-bodied gravitational system? Actually, after a little prodding and harassment from KST ),If you think I'm sexist, you should meet me in person, I'm worse, :-). I think we can. If we gauge the force used to separate a pair of planets or Cavendish weights, it is not hard to see the mechanism of induced dipoles providing the reaction force we measure and a conformance with both the inverse square law and the the acceleration law. 1/r^2 a = 1/2 mv^2 When the two masses are far apart and we use a thin wire or rod to conduct the force between, is is not so easy to see how induced dipoles enter into the reaction force or 'inertia'. The solution might be very simple. All the other induced dipoles in the universe have a 'grip' on the masses that will change only as they approach more populus regions of space. Some may object over concerns of instaneous action at distance but that doesn't need to apply where the coupling to existing Coulomb lines are locally modifed as the structure of the induced dipole adapts to the field. I think that's the ticket. That adaptation results in a gravitational attraction as a GR modification to electrostratic force. So... your holistic, or all is one, nutshell notion seems it could be considered integral to inertial behavior. Yes, well written, that's what I think. Mach's Principle is more clearly understood using Maxwell's eqs when GR is accounted for. Unfortunately, if we are correct, it would predict a null result for the LIGO experiment, and sofar that is the result. IOW's the g-waves emit in EM spectrum. Sue... If you want I'll expand on the above. ... While it is true that relativity theory describes a timely form of cause and effect, it is just locally applicable with locally applied time. It is very good... if you like a local physics that cannot describe or correlate to quantums or strings. (I hate strings) In a nutshell, we are in one, and nobody seems to realise it. A preface in an abstract stating the UNIVERSE=1 is a very reasonble invariant, I've used it. Agreeably Ken xxein: UNIVERSE=1 what? Stasis or dymamic? (Just an aside.) I'll trust that you can help me with the below. I am missing one (only one? I wish!) piece of math. Given a simple G, M (in meters) and R, I can figure the 'ideal' timerates, escape velocities etc., but I don't know how to figure out a specific velocity under a specific circumstance --- that being: Even though the integration and derivitive calc for acceleration, velocity and time is very straightforward wrt a particular R, I don't know the calculus to figure the grander scale where R varies. The prime example is - how fast is a rock moving if dropped from 2 Earth radii to just as it approaches 1 Earth radii? Rem: this is the ideal with no atmosphere and no otherwise motion between them (just a pure m(1),m(test). Having a general form of this with G, M, R and c will help me tie a lot of loose ends. Ahhh... you want to play hard-ball by putting the term 'c' in the relation. We can get there from a global assumption about conservation like e = mc^2. Look at KST's evolution above whe For example, take a pair of charges "a" and "b" and they have some configurational energy, p = a*b/s, in ergs for example. Slap the behind (dividing by volume) and get the energy density, T00= p/s^3 == a*b/s^4. Now, pause and ponder this, T00= (a/s^2)*(b/s^2) = E(a)*E(b) = a*b/s^4, where E(a) & E(b) are Electric fields of charge "a" and some other charges. "the above departs from the classical solution to EFE's that uses a continum, but who cares, that's pretty junky now. " KST has good instincts about finding the shortest path to a solution but that grand assumption about the conservation of energy in the universe is troubling? But you'd rather see the evolution begin with universe having an impedance of 377 ohms, as in this relation? http://physics.nist.gov/cuu/Images/alphaeq.gif from: http://physics.nist.gov/cuu/Constants/alpha.html Here is such an evolution that is incomplete. It considers the forces which diminish by 1/r, 1/r^2 and 1/r^3 anisotropcally. 'Electromagnetic energy and momentum ' http://farside.ph.utexas.edu/teachin...es/node90.html You want rigorous field equations that will include forces diminishing by up to 1/r^12 so can see where the Coulomb force is a trillon, trillon, trillon times greater than gravity and inertia? http://hyperphysics.phy-astr.gsu.edu...ic/elefor.html Ha! ROFL... That could end up looking like: 'The Ewald Sum' http://www.earth.ox.ac.uk/~keithr/mo...al/node11.html or you might need a big computer http://www.kfa-juelich.de/zam/ZAMPeo...hing/UNAM_2005 The last time I asked (a few years ago), Ande452 only gave me a hint as to powers (like I was supposed to know how to use them in a calc - or I should take calc(XVI)). He acted like it was a mundane piece of information with no scientific value except for a specific calculation. Well, I sorely miss this relation and feel in my bones that it is very important relation that may be a semi-Rosetta stone for understanding this universe. I also feel that it can spell trouble for SR-GR in that it might expose an unequality of great proportion if given a proper consideration. It seems it would spell trouble for GR SR because they are not well behaved when things move at other than c. Otoh, it may help unite the different theories. Yes, at least on a macro scale it seem to move in the right direction. But, without any regard to any event, I want it as a tool to play with. Is this a fair name for the tool? "Long Range Interactions in Many-Particle Simulation" (pdf) P. Gibbon and G. Sutmann. http://www.fz-juelich.de/zam/datapoo...long_range.pdf Can you express it so, or cite? This would be like the best of sex to me (temporarily, until I need more). Thx in advance for whatever you can provide. I just hope it is not theory dependent (?). The forces between dipoles is a rather simple and well established 'theory'. ;-) Sue... xxein: See my follow-up to KST. It should have a very macro answer in the proper context. |
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wrote:
Ken S. Tucker wrote: wrote: [...] A preface in an abstract stating the UNIVERSE=1 is a very reasonble invariant, I've used it. Agreeably Ken xxein: UNIVERSE=1 what? Stasis or dymamic? (Just an aside.) Even in organic terms, you or me, an ant or a bee has 1 universe. I'll trust that you can help me with the below. I am missing one (only one? I wish!) piece of math. Given a simple G, M (in meters) and R, I can figure the 'ideal' timerates, escape velocities etc., but I don't know how to figure out a specific velocity under a specific circumstance --- that being: Even though the integration and derivitive calc for acceleration, velocity and time is very straightforward wrt a particular R, I don't know the calculus to figure the grander scale where R varies. The prime example is - how fast is a rock moving if dropped from 2 Earth radii to just as it approaches 1 Earth radii? Rem: this is the ideal with no atmosphere and no otherwise motion between them (just a pure m(1),m(test). Having a general form of this with G, M, R and c will help me tie a lot of loose ends. That type of question is important in *Celestrial Mechanics*, Escape Velocity = sqrt(2GM/R) is what you want to understand. xxein: No. If dropped from 2R instead of infinity. Like if you drop something from the Empire State Bldg. instead of ten meters the splat velocity will be greater. Sqrt(2GM/R) is a drop from infinity. What is the splat velocity from 2R to R? Remember that R changes throughout the fall. The sqrt(2GM/R)is probably a math shorthand for some intergral that indicates "from R(=inf) to R(=surface of a mass), splat v=sqrt(2GM/R)". Repeat with "from R(=2R) to R(=X=any point above or including the surface of a mass), splat v=???". Do you understand what I am asking now? I'll assume you were just being complete including c. Let's try to ignore it. Force increases with radius below surface. Force diminishes by the square of the radius above surface. The curve is ugly and the equation not much prettier. I think the problem might be the interpretation of the word infinity. It is not the same as setting the focal length of a lens to infinity. If an object occupies 2 degress of your field of view, you can always double your distance and half the apparent angular size. This is how we 'expect' to approach infinity. Not so with Coulomb force and gravity You have to put on your Machian hat and consider the whole universe is always acting on the test mass. The earth acts to distribute the force of the universe assymetrically over the test mass to produce the acceleration vector. We can't approach infinity. We approach 377 ohms impedance because the universe is homogenous. As far as we know, we can't move to a position where the charges that comprise the universe will not try to drag photons out of us. That isn't the compact equation you seek, but perhaps the different POV about the mathematical use of the term 'infinity' will help to get there. Sue... |
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wrote: Ken S. Tucker wrote: wrote: [...] A preface in an abstract stating the UNIVERSE=1 is a very reasonble invariant, I've used it. Agreeably Ken xxein: UNIVERSE=1 what? Stasis or dymamic? (Just an aside.) Even in organic terms, you or me, an ant or a bee has 1 universe. I'll trust that you can help me with the below. I am missing one (only one? I wish!) piece of math. Given a simple G, M (in meters) and R, I can figure the 'ideal' timerates, escape velocities etc., but I don't know how to figure out a specific velocity under a specific circumstance --- that being: Even though the integration and derivitive calc for acceleration, velocity and time is very straightforward wrt a particular R, I don't know the calculus to figure the grander scale where R varies. The prime example is - how fast is a rock moving if dropped from 2 Earth radii to just as it approaches 1 Earth radii? Rem: this is the ideal with no atmosphere and no otherwise motion between them (just a pure m(1),m(test). Having a general form of this with G, M, R and c will help me tie a lot of loose ends. That type of question is important in *Celestrial Mechanics*, Escape Velocity = sqrt(2GM/R) is what you want to understand. xxein: No. If dropped from 2R instead of infinity. Like if you drop something from the Empire State Bldg. instead of ten meters the splat velocity will be greater. Sqrt(2GM/R) is a drop from infinity. What is the splat velocity from 2R to R? Remember that R changes throughout the fall. The sqrt(2GM/R)is probably a math shorthand for some intergral that indicates "from R(=inf) to R(=surface of a mass), splat v=sqrt(2GM/R)". Repeat with "from R(=2R) to R(=X=any point above or including the surface of a mass), splat v=???". Do you understand what I am asking now? Yes I do, books on this subject are available at a library by people who have written this stuff up clearly and you can verify are qualified to answer you. Anyway, IIRC, the differences in g-potential convert to kinetic energy, (Newtonian approx), E = m*v^2/2 = m*PHI2 - m*PHI1 But that is modified in GR. You may want to post that question in a new thread because the're quite a number of people who are very good at teaching. Ken |
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On Wed, 05 Oct 2005 15:54:38 -0400, Ken S. Tucker
wrote: Sue... wrote: Ken S. Tucker wrote: Sue... wrote: ... Many thanks for the obeservation about the term 'force'. At some point, a poor choice between force, energy, acceleration or potential can hide the trees in the forest. The correct choice would show the clearest relation between mass, gravity and inertia yet be something a bit more formal than a professor riding in a lift. Sue... Hi Sue, Ken here... Your cuddling to the Electo-vacuum solution to the EFE's (Einstein Field Equations), however in agreement with your inclination, the solution departs from a continuum. That is to say, the EFE's do require relations in the way you are seeking. The wiki URL you posted in another thread, inspired a bit of window shopping and I sort of like the way this outfit looks on induced dipoles: I should have provided that ref to you, so you don't think I'm a TOTAL lunatic, but just partly loony:-). That wiki on GR is pretty good, the authors are trying hard, I follow the discussion. Phenomena which can be modeled by null dust solutions include: a beam of massless neutrinos (treated according to classical physics), a very high-frequency electromagnetic wave, a beam of incoherent electromagnetic radiation. In particular, a plane wave of incoherent electromagnetic radiation is a linear superposition of plane waves, all moving in the same direction but having randomly chosen phases and frequencies. (Even though the Einstein field equation is nonlinear, a linear superposition of comoving plane waves is possible.) Here, each electromagnetic plane wave has a well defined frequency and phase, but the superposition does not. Individual electromagnetic plane waves are modeled by null electrovacuum solutions, while an incoherent mixture can be modeled by a null dust. http://en.wikipedia.org/wiki/Null_dust_solution I don't read the shorthand well enough to know it that is what you are modeling below. I am not at all comfortable with the freewheeling interchange of E and B *outside the particle* but that may be valid way to derive forces from incoherent radiation. A null dust seems to be the best description of induced dipoles. Sue... I think no one is satisfied yet. It seems GR is being treated as a extension of Newtons continuum theory, The matter that fills the universe requires that we consider a continuum. and of course that makes it's fusion with QT difficult because QT is a theory about relations, The forces between charges requires that we consider the relation between the entities. and not about points on a continuum. OTOH I see GR as naturally a relation theory, such as relating two simple charges "a" and "b" below. So yes. You can't have biscuits with jam using all bread or all jam. )Sue... Regards Ken S. Tucker For example, take a pair of charges "a" and "b" and they have some configurational energy, p = a*b/s, in ergs for example. Slap the behind (dividing by volume) and get the energy density, T00= p/s^3 == a*b/s^4. Now, pause and ponder this, T00= (a/s^2)*(b/s^2) = E(a)*E(b) = a*b/s^4, where E(a) & E(b) are Electric fields of charge "a" and some other charges. Sue, the above departs from the classical solution to EFE's that uses a continum, but who cares, that's pretty junky now. If you like that's Tuckers "noncontinuum solution to the Electrovacuum EFE's", I mean that. Once T00 is defined that way, we can enjoy G00 by G_uv = T_uv , G00 = T00. OO scary equation, I'm shakin in my boots. Twist & shout, G00 = NABLA^2 g00 = T00. Solve for g00 and find, g00 = 1 + (a/s)(b/s), provided the charges don't masturbate, so terms like self energization "a^2/s" are excluded including a^2/s^4. Sue want's a solution using discrete charges I figure we should give girls what they need. At this point we have a closed logic system consistent with the EFE's and discrete, where discrete means charge "a" is in a different location than "b", and the metric is defined by the relation. See, the continuum died. With Sues ableness to put things behind us, we can proceed to observe the asymmetry of the relative geodesics of charges "a" and "b". I'll stop here, take questions, and if you want, show how nonsymetrical metrics give the EM field. Regards Sue Ken S. Tucker -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ |
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sue jahn wrote: On Wed, 05 Oct 2005 15:54:38 -0400, Ken S. Tucker wrote: Sue... wrote: Ken S. Tucker wrote: Sue... wrote: ... Many thanks for the obeservation about the term 'force'. At some point, a poor choice between force, energy, acceleration or potential can hide the trees in the forest. The correct choice would show the clearest relation between mass, gravity and inertia yet be something a bit more formal than a professor riding in a lift. Sue... Hi Sue, Ken here... Your cuddling to the Electo-vacuum solution to the EFE's (Einstein Field Equations), however in agreement with your inclination, the solution departs from a continuum. That is to say, the EFE's do require relations in the way you are seeking. The wiki URL you posted in another thread, inspired a bit of window shopping and I sort of like the way this outfit looks on induced dipoles: I should have provided that ref to you, so you don't think I'm a TOTAL lunatic, but just partly loony:-). That wiki on GR is pretty good, the authors are trying hard, I follow the discussion. Phenomena which can be modeled by null dust solutions include: a beam of massless neutrinos (treated according to classical physics), a very high-frequency electromagnetic wave, a beam of incoherent electromagnetic radiation. In particular, a plane wave of incoherent electromagnetic radiation is a linear superposition of plane waves, all moving in the same direction but having randomly chosen phases and frequencies. (Even though the Einstein field equation is nonlinear, a linear superposition of comoving plane waves is possible.) Here, each electromagnetic plane wave has a well defined frequency and phase, but the superposition does not. Individual electromagnetic plane waves are modeled by null electrovacuum solutions, while an incoherent mixture can be modeled by a null dust. http://en.wikipedia.org/wiki/Null_dust_solution I don't read the shorthand well enough to know it that is what you are modeling below. I am not at all comfortable with the freewheeling interchange of E and B *outside the particle* but that may be valid way to derive forces from incoherent radiation. A null dust seems to be the best description of induced dipoles. Sue... I think no one is satisfied yet. It seems GR is being treated as a extension of Newtons continuum theory, The matter that fills the universe requires that we consider a continuum. and of course that makes it's fusion with QT difficult because QT is a theory about relations, The forces between charges requires that we consider the relation between the entities. and not about points on a continuum. OTOH I see GR as naturally a relation theory, such as relating two simple charges "a" and "b" below. So yes. You can't have biscuits with jam using all bread or all jam. )Sue... Hi Sue, have a quick glance at http://www.vacuum-physics.com/KST/GR_Charge_Couple3.pdf that Fredifizzx helped me with. It's only 2 pages, but it connects a few dots. Also G. Hansen's post to "what is about gravity that slows light" today is really good. Regards Ken |