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| Tags: curves, geometrically, magnets, space |
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#11
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On Jun 24, 2:36 pm, The Ghost In The Machine
wrote: In sci.physics.relativity, Sue... wrote on Sun, 24 Jun 2007 04:10:07 -0700 .com: On Jun 24, 7:59 am, "Dirk Van de moortel" dirkvandemoor...@ThankS-NO- SperM.hotmail.com wrote: "John Smith" wrote in ooglegroups.com... a permanent magnet curves space-time for grain of ferrous material there is no difference, even tha equations are tha same There is a big difference. Every object responds to the gravitational field in exactly the same way, since the force is proportional to the mass of the object and therefore the acceleration is independent of the mass. That is why gravity can be modeled as curved spacetime. This is definitely not the case with electric and magnetic forces. Two Kg of magnets exerts twice the force of one Kg of magenets. Same as gravity. This is true, but one cannot state that 1 kg of magnet will exert the same force on a 1 kg piece of plastic 1 meter away as on a 1 kg piece of iron. I didn't say a gravitational mass would be equal to a magnetic mass. However, the Earth exerts the same force in both cases. No... look at the earths magnetosphere. It is not isotropic. I didn't say it was a good idea. But it certainly isn't out of GR's domain. With respect to the world line of a given observer, the electromagnetic field tensor decomposes into two vectors, the electric and magnetic field vectors (3 components each). http://www.physlink.com/Education/AskExperts/ae98.cfm Sue... Sue... and if you put a mechanical watch close to a magnet, he will tick slower You can stop pretending to be tha idiot now. Dirk Vdm -- #191, Conventional memory has to be one of the most UNconventional architectures I've seen in a computer system. -- Posted via a free Usenet account fromhttp://www.teranews.com- Hide quoted text - - Show quoted text - |
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#12
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"Sue..." wrote in news:1182683407.427487.226060
@n60g2000hse.googlegroups.com: Two Kg of magnets exerts twice the force of one Kg of magenets. Same as gravity. Sue... You would be better off to say "a two gauss magnet exerts twice the force of a one gauss magnet" as I can have two magnets of identical masses that have much different field strengths. I can also combine two magnets into a system that has very little external magnetic field or into a system that has twice the field of either magnet alone. -- bz please pardon my infinite ignorance, the set-of-things-I-do-not-know is an infinite set. remove ch100-5 to avoid spam trap |
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#13
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On Jun 24, 7:06 pm, bz wrote:
"Sue..." wrote in news:1182683407.427487.226060 @n60g2000hse.googlegroups.com: Two Kg of magnets exerts twice the force of one Kg of magenets. Same as gravity. Sue... You would be better off to say "a two gauss magnet exerts twice the force of a one gauss magnet" as I can have two magnets of identical masses that have much different field strengths. I can also combine two magnets into a system that has very little external magnetic field or into a system that has twice the field of either magnet alone. -- bz please pardon my infinite ignorance, the set-of-things-I-do-not-know is an infinite set. remove ch100-5 to avoid spam trap |
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#14
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On Jun 24, 7:06 pm, bz wrote:
"Sue..." wrote in news:1182683407.427487.226060 @n60g2000hse.googlegroups.com: Two Kg of magnets exerts twice the force of one Kg of magenets. Same as gravity. Sue... You would be better off to say "a two gauss magnet exerts twice the force of a one gauss magnet" as I can have two magnets of identical masses that have much different field strengths. I can also combine two magnets into a system that has very little external magnetic field or into a system that has twice the field of either magnet alone. I especially want to make the point that for a given material that you don't double the force without also doubling the gravitational mass. A ferrite loopstick is 0 gauss but you can't hollow it out to lighten it without also spreading out it flux lines and making it unsuitable for you pocket AM radio. We could probably post the question to s.p.r and find out if it is a fair 2D version of GR's curvature or concentration of energy density. Chris Hillman's article linked in this thread, leads me to believe it is but I am not getting out of the wading pool just to play a drowning scene. Sue... -- bz please pardon my infinite ignorance, the set-of-things-I-do-not-know is an infinite set. remove ch100-5 to avoid spam trap |
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#15
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"Sue..." wrote in
ups.com: On Jun 24, 7:06 pm, bz wrote: "Sue..." wrote in news:1182683407.427487.226060 @n60g2000hse.googlegroups.com: Two Kg of magnets exerts twice the force of one Kg of magenets. Same as gravity. Sue... You would be better off to say "a two gauss magnet exerts twice the force of a one gauss magnet" as I can have two magnets of identical masses that have much different field strengths. I can also combine two magnets into a system that has very little external magnetic field or into a system that has twice the field of either magnet alone. I especially want to make the point that for a given material that you don't double the force without also doubling the gravitational mass. I guess you have never magnitized something. ![]() The magnetic force goes from zero to some specific number of gauss without any[measurable] change in the mass of the object. And that is after the current flow through the coil is turned off. ![]() A ferrite loopstick is 0 gauss but you can't hollow it out to lighten it without also spreading out it flux lines and making it unsuitable for you pocket AM radio. Just increase the tuning capacitor to bring it back into resonance. We could probably post the question to s.p.r and find out if it is a fair 2D version of GR's curvature or concentration of energy density. Chris Hillman's article linked in this thread, leads me to believe it is but I am not getting out of the wading pool just to play a drowning scene. Be sure to wear sun block, that could be a real sun of a beach of a burn. -- bz please pardon my infinite ignorance, the set-of-things-I-do-not-know is an infinite set. remove ch100-5 to avoid spam trap |
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#16
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On Jun 24, 7:46 am, John Smith wrote:
a permanent magnet curves space-time for grain of ferrous material there is no difference, even tha equations are tha same It appears they might be: At risk of getting my ankles wet: "How does matter couple to space-time so that space-time becomes curved?" The Weyl tensor turns out to be analogous in many ways to the electromagnetic field tensor, which you can think of as an antisymmetric four by four matrix (6 algebraically independent components at each event). With respect to the world line of a given observer, the electromagnetic field tensor decomposes into two vectors, the electric and magnetic field vectors (3 components each). --C. Hillman http://www.physlink.com/Education/AskExperts/ae98.cfm The elegance of these equations [EFT]stems from the simple replacing of partial with covariant derivatives, a practice sometimes referred to in the parlance of GR as 'replacing partial with covariant derivatives'. These equations are sometimes referred to as the curved space Maxwell equations. Again, the second equation implies charge conservation (in curved spacetime) http://en.wikipedia.org/wiki/Electromagnetic_tensor and if you put a mechanical watch close to a magnet, he will tick slower Like a Pound-Snider experiment except louder. http://stinet.dtic.mil/oai/oai?&verb...er =AD0617511 Sue... |
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#17
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On Jun 25, 1:11 am, bz wrote:
"Sue..." wrote roups.com: On Jun 24, 7:06 pm, bz wrote: "Sue..." wrote in news:1182683407.427487.226060 @n60g2000hse.googlegroups.com: Two Kg of magnets exerts twice the force of one Kg of magenets. Same as gravity. Sue... You would be better off to say "a two gauss magnet exerts twice the force of a one gauss magnet" as I can have two magnets of identical masses that have much different field strengths. I can also combine two magnets into a system that has very little external magnetic field or into a system that has twice the field of either magnet alone. I especially want to make the point that for a given material that you don't double the force without also doubling the gravitational mass. I guess you have never magnitized something. ![]() I have found a few lifeguards attractive. Does that count? The magnetic force goes from zero to some specific number of gauss without any[measurable] change in the mass of the object. It is nevertheless proportional to the gravitational mass of the material. And that is after the current flow through the coil is turned off. ![]() No time to think about that because it is my day to change the earth's batteries so it won't fly out of orbit. )A ferrite loopstick is 0 gauss but you can't hollow it out to lighten it without also spreading out it flux lines and making it unsuitable for you pocket AM radio. Just increase the tuning capacitor to bring it back into resonance. No... that won't restore the large effective EM aperture that was the reason for using the loop-stick in the first place. Ya think after a gazillion pocket radios, the bean counters wouldn't have figured out how to exploit that cost and weight saving if it were possible. --- period (we both know the answer) We could probably post the question to s.p.r and find out if it is a fair 2D version of GR's curvature or concentration of energy density. Chris Hillman's article linked in this thread, leads me to believe it is but I am not getting out of the wading pool just to play a drowning scene. Be sure to wear sun block, that could be a real sun of a beach of a burn. Need something other than sunblock because the attraction with the lifeguard isn't mutual. Mismatched ports I suppose. http://www.e-meca.com/tech_papers/is..._image002_0000 http://www.e-meca.com/tech_papers/iso_cir.htm Sue... -- bz |
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#18
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"Sue..." wrote in
oups.com: On Jun 25, 1:11 am, bz wrote: "Sue..." wrote roups.com: On Jun 24, 7:06 pm, bz wrote: "Sue..." wrote in news:1182683407.427487.226060 @n60g2000hse.googlegroups.com: Two Kg of magnets exerts twice the force of one Kg of magenets. Same as gravity. Sue... You would be better off to say "a two gauss magnet exerts twice the force of a one gauss magnet" as I can have two magnets of identical masses that have much different field strengths. I can also combine two magnets into a system that has very little external magnetic field or into a system that has twice the field of either magnet alone. I especially want to make the point that for a given material that you don't double the force without also doubling the gravitational mass. I guess you have never magnitized something. ![]() I have found a few lifeguards attractive. Does that count? Only if you take in ironing. The magnetic force goes from zero to some specific number of gauss without any[measurable] change in the mass of the object. It is nevertheless proportional to the gravitational mass of the material. Seems more like a semi-independent voter, to me. And that is after the current flow through the coil is turned off. ![]() No time to think about that because it is my day to change the earth's batteries so it won't fly out of orbit. )Jus' call 'er dyna-moe! A ferrite loopstick is 0 gauss but you can't hollow it out to lighten it without also spreading out it flux lines and making it unsuitable for you pocket AM radio. Just increase the tuning capacitor to bring it back into resonance. No... that won't restore the large effective EM aperture that was the reason for using the loop-stick in the first place. Hollerin out the loopstick core don't reduce it's cap-sure area, long as you keep it reso-nent/dent. Ya think after a gazillion pocket radios, the bean counters wouldn't have figured out how to exploit that cost and weight saving if it were possible. --- period (we both know the answer) They said 'that"s not my schtick'. We could probably post the question to s.p.r and find out if it is a fair 2D version of GR's curvature or concentration of energy density. Chris Hillman's article linked in this thread, leads me to believe it is but I am not getting out of the wading pool just to play a drowning scene. Be sure to wear sun block, that could be a real sun of a beach of a burn. Need something other than sunblock because the attraction with the lifeguard isn't mutual. Mismatched ports I suppose. Get a universal adapter at any Radio-Stack shore. http://www.e-meca.com/tech_papers/is..._image002_0000 bad linc. http://www.e-meca.com/tech_papers/iso_cir.htm -- bz please pardon my infinite ignorance, the set-of-things-I-do-not-know is an infinite set. remove ch100-5 to avoid spam trap |
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#19
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On Jun 25, 11:16 am, bz wrote:
"Sue..." wrote groups.com: On Jun 25, 1:11 am, bz wrote: "Sue..." wrote roups.com: On Jun 24, 7:06 pm, bz wrote: "Sue..." wrote in news:1182683407.427487.226060 @n60g2000hse.googlegroups.com: Two Kg of magnets exerts twice the force of one Kg of magenets. Same as gravity. Sue... You would be better off to say "a two gauss magnet exerts twice the force of a one gauss magnet" as I can have two magnets of identical masses that have much different field strengths. I can also combine two magnets into a system that has very little external magnetic field or into a system that has twice the field of either magnet alone. I especially want to make the point that for a given material that you don't double the force without also doubling the gravitational mass. I guess you have never magnitized something. ![]() I have found a few lifeguards attractive. Does that count? Only if you take in ironing. I ain't that ugly. )The magnetic force goes from zero to some specific number of gauss without any[measurable] change in the mass of the object. It is nevertheless proportional to the gravitational mass of the material. Seems more like a semi-independent voter, to me. And that is after the current flow through the coil is turned off. ![]() No time to think about that because it is my day to change the earth's batteries so it won't fly out of orbit. )Jus' call 'er dyna-moe! A ferrite loopstick is 0 gauss but you can't hollow it out to lighten it without also spreading out it flux lines and making it unsuitable for you pocket AM radio. Just increase the tuning capacitor to bring it back into resonance. No... that won't restore the large effective EM aperture that was the reason for using the loop-stick in the first place. Hollerin out the loopstick core don't reduce it's cap-sure area, long as you keep it reso-nent/dent. If I can find my dictionary of four letter words I might choose to dispute that. Hmmm... flux, core, path, spin. Nothin' fits Ferrites and the space around them are real black magic. But I am pretty sure you can't just hollow the rod out and add capacitance. Would you expect a DC relay to have the same pull-in current after you drilled out the core? Ya think after a gazillion pocket radios, the bean counters wouldn't have figured out how to exploit that cost and weight saving if it were possible. --- period (we both know the answer) They said 'that"s not my schtick'. Much easier to schelp when holler. We could probably post the question to s.p.r and find out if it is a fair 2D version of GR's curvature or concentration of energy density. Chris Hillman's article linked in this thread, leads me to believe it is but I am not getting out of the wading pool just to play a drowning scene. Be sure to wear sun block, that could be a real sun of a beach of a burn. Need something other than sunblock because the attraction with the lifeguard isn't mutual. Mismatched ports I suppose. Get a universal adapter at any Radio-Stack shore. http://www.e-meca.com/tech_papers/is..._image002_0000 It's tail got caught in the door. It's on the page below. bad linc. Black magic ferrites. http://www.e-meca.com/tech_papers/iso_cir.htm Sue... -- bz |
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#20
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Obviously!? However, pretty surely you are, but sure, you never would be, for the simple reason, that, it is the geometry itself, that it curves everything along the needs all along, a definitely as a matter a fact. -- Ahmed Ouahi, Architect Best Regards! "Sue..." wrote in message oups.com... On Jun 25, 11:16 am, bz wrote: "Sue..." wrote groups.com: On Jun 25, 1:11 am, bz wrote: "Sue..." wrote roups.com: On Jun 24, 7:06 pm, bz wrote: "Sue..." wrote in news:1182683407.427487.226060 @n60g2000hse.googlegroups.com: Two Kg of magnets exerts twice the force of one Kg of magenets. Same as gravity. Sue... You would be better off to say "a two gauss magnet exerts twice the force of a one gauss magnet" as I can have two magnets of identical masses that have much different field strengths. I can also combine two magnets into a system that has very little external magnetic field or into a system that has twice the field of either magnet alone. I especially want to make the point that for a given material that you don't double the force without also doubling the gravitational mass. I guess you have never magnitized something. ![]() I have found a few lifeguards attractive. Does that count? Only if you take in ironing. I ain't that ugly. )The magnetic force goes from zero to some specific number of gauss without any[measurable] change in the mass of the object. It is nevertheless proportional to the gravitational mass of the material. Seems more like a semi-independent voter, to me. And that is after the current flow through the coil is turned off. ![]() No time to think about that because it is my day to change the earth's batteries so it won't fly out of orbit. )Jus' call 'er dyna-moe! A ferrite loopstick is 0 gauss but you can't hollow it out to lighten it without also spreading out it flux lines and making it unsuitable for you pocket AM radio. Just increase the tuning capacitor to bring it back into resonance. No... that won't restore the large effective EM aperture that was the reason for using the loop-stick in the first place. Hollerin out the loopstick core don't reduce it's cap-sure area, long as you keep it reso-nent/dent. If I can find my dictionary of four letter words I might choose to dispute that. Hmmm... flux, core, path, spin. Nothin' fits Ferrites and the space around them are real black magic. But I am pretty sure you can't just hollow the rod out and add capacitance. Would you expect a DC relay to have the same pull-in current after you drilled out the core? Ya think after a gazillion pocket radios, the bean counters wouldn't have figured out how to exploit that cost and weight saving if it were possible. --- period (we both know the answer) They said 'that"s not my schtick'. Much easier to schelp when holler. We could probably post the question to s.p.r and find out if it is a fair 2D version of GR's curvature or concentration of energy density. Chris Hillman's article linked in this thread, leads me to believe it is but I am not getting out of the wading pool just to play a drowning scene. Be sure to wear sun block, that could be a real sun of a beach of a burn. Need something other than sunblock because the attraction with the lifeguard isn't mutual. Mismatched ports I suppose. Get a universal adapter at any Radio-Stack shore. http://www.e-meca.com/tech_papers/is..._image002_0000 It's tail got caught in the door. It's on the page below. bad linc. Black magic ferrites. http://www.e-meca.com/tech_papers/iso_cir.htm Sue... -- bz |
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