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Hi,
Jupiter jet streams and the great red spot were puzzling scientist for long time. Those phenomena are driven by a stellar cycle on Jupiter. Like the solar cycle that changes the magnetic polarity of the sun every 11 years Jupiter has a magnetic cycle that induce current around the planet. This current is divided to electrons and positive ion that flow in opposite direction to create the jet streams. The charge between adjacent jets drives the great red spot. Similar process creates the sun plasma belts and the sunspots. Comments are welcomed. You can read the article he http://www.philica.com/display_artic...article_id=149 http://www.scribd.com/doc/10180027/S...Great-Red-Spot http://www.pixelphase.com/sun/rotation.pdf This article is based on a former article that shows that the solar cycle is applied to the sun from the galactic disc and not created internally by a solar dynamo. The solar cycle is what heats the sun by inducing electric currents and not fusion reaction. http://www.philica.com/display_artic...?article_id=65 http://www.pixelphase.com/sun/sun.pdf Regards, Dan Bar-Zohar |
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On Jan 27, 5:20*pm, wrote:
.... This article is based on a former article that shows that the solar cycle is applied to the sun from the galactic disc and not created internally by a solar dynamo. The solar cycle is what heats the sun by inducing electric currents and not fusion reaction. http://www.philica.com/display_artic...?article_id=65 http://www.pixelphase.com/sun/sun.pdf Strangely, the former article appears to rely on unsubstantiated assumptions. The author relies crucially on a claim about the electrical resistivity of the sun, as a means to develop large electrical currents, which appears to be incorrect. In particular, the claimed electrical resistivity is based solely on a conference proceedings paper published in 1987. The conference paper itself is a theoretical paper, not an experimental one, and the electrical properties discussed in the text refer to a theoretical 'toy model' and are not linked to measurements in any way. Furthermore, the Zohar author incorrectly assumes that the conference paper's units are expressed in "SI" metric units, when they quite clearly are not. It's actually not clear what the units are, but they are not SI, and thus, the Zohar author has made a tragic error. Ultimately, the Zohar author relies on this conference paper to conclude that the Sun is effectively a superconducting substrate. This is purely ludicrous. There's hardly a way that a 1000-1000000 K thermal plasma can be a superconductor. CM |
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On Wed, 28 Jan 2009 19:13:28 -0800 (PST), Craig
wrote: On Jan 27, 5:20*pm, wrote: ... This article is based on a former article that shows that the solar cycle is applied to the sun from the galactic disc and not created internally by a solar dynamo. The solar cycle is what heats the sun by inducing electric currents and not fusion reaction. http://www.philica.com/display_artic...?article_id=65 http://www.pixelphase.com/sun/sun.pdf Strangely, the former article appears to rely on unsubstantiated assumptions. The author relies crucially on a claim about the electrical resistivity of the sun, as a means to develop large electrical currents, which appears to be incorrect. In particular, the claimed electrical resistivity is based solely on a conference proceedings paper published in 1987. The conference paper itself is a theoretical paper, not an experimental one, and the electrical properties discussed in the text refer to a theoretical 'toy model' and are not linked to measurements in any way. Furthermore, the Zohar author incorrectly assumes that the conference paper's units are expressed in "SI" metric units, when they quite clearly are not. It's actually not clear what the units are, but they are not SI, and thus, the Zohar author has made a tragic error. Ultimately, the Zohar author relies on this conference paper to conclude that the Sun is effectively a superconducting substrate. This is purely ludicrous. There's hardly a way that a 1000-1000000 K thermal plasma can be a superconductor. CM The sun is not a perfect superconductor and it has some resistance. Still this resistance is very low as the sun is made of hot plasma. The low resistance of the sun converts low magnetic fields that cross the sun to very strong current that heat the sun. The model of a magnet and a superconductor for stars and galaxies is very useful. It can explain the rigidity of the galactic disk that creates the galaxy rotation curve and it can explain the repulsion between galaxies and the expanding universe. A formula for the conductivity of hot plasma made of ionized hydrogen can be found in the book: Cosmic Ray Interactions, Propagation and Acceleration in Space Plasmas - L. Dorman Springer, 2006 - Page 1. Conductivity = 2*10^7*T^3/2 Where T is the temperature. Regards, Dan Bar-Zohar |
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On Jan 30, 12:10*am, wrote:
On Wed, 28 Jan 2009 19:13:28 -0800 (PST), Craig wrote: On Jan 27, 5:20*pm, wrote: ... This article is based on a former article that shows that the solar cycle is applied to the sun from the galactic disc and not created internally by a solar dynamo. The solar cycle is what heats the sun by inducing electric currents and not fusion reaction. http://www.philica.com/display_artic...?article_id=65 http://www.pixelphase.com/sun/sun.pdf Strangely, the former article appears to rely on unsubstantiated assumptions. *The author relies crucially on a claim about the electrical resistivity of the sun, as a means to develop large electrical currents, which appears to be incorrect. In particular, the claimed electrical resistivity is based solely on a conference proceedings paper published in 1987. *The conference paper itself is a theoretical paper, not an experimental one, and the electrical properties discussed in the text refer to a theoretical 'toy model' and are not linked to measurements in any way. Furthermore, the Zohar author incorrectly assumes that the conference paper's units are expressed in "SI" metric units, when they quite clearly are not. *It's actually not clear what the units are, but they are not SI, and thus, the Zohar author has made a tragic error. Ultimately, the Zohar author relies on this conference paper to conclude that the Sun is effectively a superconducting substrate. This is purely ludicrous. *There's hardly a way that a 1000-1000000 K thermal plasma can be a superconductor. CM The sun is not a perfect superconductor and it has some resistance. Still this resistance is very low as the sun is made of hot plasma. The low resistance of the sun converts low magnetic fields that cross the sun to very strong current that heat the sun. *The model of a magnet and a superconductor for stars and galaxies is very useful. It can explain the rigidity of the galactic disk that creates the galaxy rotation curve and it can explain the repulsion between galaxies and the expanding universe. A formula for the conductivity of hot plasma made of ionized hydrogen can be found in the book: Cosmic Ray Interactions, Propagation and Acceleration in Space Plasmas - L. Dorman Springer, 2006 - Page 1. Conductivity = 2*10^7*T^3/2 Where T is the temperature. Regards, Dan Bar-Zohar How many Tesla/m2 is the surface of our sun worth? ~ BG |
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On Jan 30, 3:10*am, wrote:
On Wed, 28 Jan 2009 19:13:28 -0800 (PST), Craig wrote: On Jan 27, 5:20*pm, wrote: ... This article is based on a former article that shows that the solar cycle is applied to the sun from the galactic disc and not created internally by a solar dynamo. The solar cycle is what heats the sun by inducing electric currents and not fusion reaction. http://www.philica.com/display_artic...?article_id=65 http://www.pixelphase.com/sun/sun.pdf Strangely, the former article appears to rely on unsubstantiated assumptions. *The author relies crucially on a claim about the electrical resistivity of the sun, as a means to develop large electrical currents, which appears to be incorrect. In particular, the claimed electrical resistivity is based solely on a conference proceedings paper published in 1987. *The conference paper itself is a theoretical paper, not an experimental one, and the electrical properties discussed in the text refer to a theoretical 'toy model' and are not linked to measurements in any way. Furthermore, the Zohar author incorrectly assumes that the conference paper's units are expressed in "SI" metric units, when they quite clearly are not. *It's actually not clear what the units are, but they are not SI, and thus, the Zohar author has made a tragic error. Ultimately, the Zohar author relies on this conference paper to conclude that the Sun is effectively a superconducting substrate. This is purely ludicrous. *There's hardly a way that a 1000-1000000 K thermal plasma can be a superconductor. CM The sun is not a perfect superconductor and it has some resistance. Still this resistance is very low as the sun is made of hot plasma. The low resistance of the sun converts low magnetic fields that cross the sun to very strong current that heat the sun. *The model of a magnet and a superconductor for stars and galaxies is very useful. It can explain the rigidity of the galactic disk that creates the galaxy rotation curve and it can explain the repulsion between galaxies and the expanding universe. A formula for the conductivity of hot plasma made of ionized hydrogen can be found in the book: Cosmic Ray Interactions, Propagation and Acceleration in Space Plasmas - L. Dorman Springer, 2006 - Page 1. Conductivity = 2*10^7*T^3/2 Where T is the temperature. The first question one might ask is why you cited a theoretical "toy model" conference proceedings paper in your manuscript, and now are switching to a new citation. Another question might be, why would a formula for conductivity in a *space plasma* -- i.e. the solar wind -- be applicable to the solar *interior* as you seem to be using it. Finally, as I noted previously, but you ignored, you *assumed* the units were SI (MKS) units. However, astronomers typically work in c.g.s. units. In fact, the units of (s^-1) in the conference proceedings you cited are the equivalent c.g.s. units for conductivity. But since your manuscript uses the cited value as if it were an MKS quantity, your results are incorrect and irrelevant. More authoritative references for the conductivity in the solar body, in MKS units, shows that the conductivity quantities are much smaller than you claim (e.g. Stix 1989, sec 8.1). Thus, any "magnetic dissipation" would be many orders of magnitude much less than you originally claimed. CM References Stix, M. 1989, *The Sun: An Introduction*, Springer. |
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On Sun, 1 Feb 2009 11:45:14 -0800 (PST), Craig
wrote: On Jan 30, 3:10*am, wrote: On Wed, 28 Jan 2009 19:13:28 -0800 (PST), Craig wrote: On Jan 27, 5:20*pm, wrote: ... This article is based on a former article that shows that the solar cycle is applied to the sun from the galactic disc and not created internally by a solar dynamo. The solar cycle is what heats the sun by inducing electric currents and not fusion reaction. http://www.philica.com/display_artic...?article_id=65 http://www.pixelphase.com/sun/sun.pdf Strangely, the former article appears to rely on unsubstantiated assumptions. *The author relies crucially on a claim about the electrical resistivity of the sun, as a means to develop large electrical currents, which appears to be incorrect. In particular, the claimed electrical resistivity is based solely on a conference proceedings paper published in 1987. *The conference paper itself is a theoretical paper, not an experimental one, and the electrical properties discussed in the text refer to a theoretical 'toy model' and are not linked to measurements in any way. Furthermore, the Zohar author incorrectly assumes that the conference paper's units are expressed in "SI" metric units, when they quite clearly are not. *It's actually not clear what the units are, but they are not SI, and thus, the Zohar author has made a tragic error. Ultimately, the Zohar author relies on this conference paper to conclude that the Sun is effectively a superconducting substrate. This is purely ludicrous. *There's hardly a way that a 1000-1000000 K thermal plasma can be a superconductor. CM The sun is not a perfect superconductor and it has some resistance. Still this resistance is very low as the sun is made of hot plasma. The low resistance of the sun converts low magnetic fields that cross the sun to very strong current that heat the sun. *The model of a magnet and a superconductor for stars and galaxies is very useful. It can explain the rigidity of the galactic disk that creates the galaxy rotation curve and it can explain the repulsion between galaxies and the expanding universe. A formula for the conductivity of hot plasma made of ionized hydrogen can be found in the book: Cosmic Ray Interactions, Propagation and Acceleration in Space Plasmas - L. Dorman Springer, 2006 - Page 1. Conductivity = 2*10^7*T^3/2 Where T is the temperature. The first question one might ask is why you cited a theoretical "toy model" conference proceedings paper in your manuscript, and now are switching to a new citation. Another question might be, why would a formula for conductivity in a *space plasma* -- i.e. the solar wind -- be applicable to the solar *interior* as you seem to be using it. Finally, as I noted previously, but you ignored, you *assumed* the units were SI (MKS) units. However, astronomers typically work in c.g.s. units. In fact, the units of (s^-1) in the conference proceedings you cited are the equivalent c.g.s. units for conductivity. But since your manuscript uses the cited value as if it were an MKS quantity, your results are incorrect and irrelevant. More authoritative references for the conductivity in the solar body, in MKS units, shows that the conductivity quantities are much smaller than you claim (e.g. Stix 1989, sec 8.1). Thus, any "magnetic dissipation" would be many orders of magnitude much less than you originally claimed. CM References Stix, M. 1989, *The Sun: An Introduction*, Springer. Hi, You are right there is confusion between cgs units and mks units. To convert the resistivity from cgs to mks the following ratio is used: 1 s = 8.988*10^9 Ohm*m Using this ratio it is possible to convert the formulas from Durney and Dorman. In Durney 9*10^6*T^3/2 is in cgs and when converted to mks will give 0.001*T^3/2 in Dorman the convertion will give 0.002*T^3/2. This is close to the value in Stix that gives 0.003*T^3/2. http://books.google.com/books?id=wxH...sult#PPA308,M1 I did the calculation again using the Stix formula and using 4000000K as the temperature. http://www.pixelphase.com/sun/energy_calc2.pdf This also gives an energy that is larger than what is lost from the sun luminosity. Regards, Dan Bar-Zohar |
#8
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On Feb 3, 1:49*pm, wrote:
On Sun, 1 Feb 2009 11:45:14 -0800 (PST), Craig wrote: On Jan 30, 3:10*am, wrote: On Wed, 28 Jan 2009 19:13:28 -0800 (PST), Craig wrote: On Jan 27, 5:20*pm, wrote: ... This article is based on a former article that shows that the solar cycle is applied to the sun from the galactic disc and not created internally by a solar dynamo. The solar cycle is what heats the sun by inducing electric currents and not fusion reaction. http://www.philica.com/display_artic...?article_id=65 http://www.pixelphase.com/sun/sun.pdf Strangely, the former article appears to rely on unsubstantiated assumptions. *The author relies crucially on a claim about the electrical resistivity of the sun, as a means to develop large electrical currents, which appears to be incorrect. In particular, the claimed electrical resistivity is based solely on a conference proceedings paper published in 1987. *The conference paper itself is a theoretical paper, not an experimental one, and the electrical properties discussed in the text refer to a theoretical 'toy model' and are not linked to measurements in any way. Furthermore, the Zohar author incorrectly assumes that the conference paper's units are expressed in "SI" metric units, when they quite clearly are not. *It's actually not clear what the units are, but they are not SI, and thus, the Zohar author has made a tragic error. Ultimately, the Zohar author relies on this conference paper to conclude that the Sun is effectively a superconducting substrate. This is purely ludicrous. *There's hardly a way that a 1000-1000000 K thermal plasma can be a superconductor. CM The sun is not a perfect superconductor and it has some resistance. Still this resistance is very low as the sun is made of hot plasma. The low resistance of the sun converts low magnetic fields that cross the sun to very strong current that heat the sun. *The model of a magnet and a superconductor for stars and galaxies is very useful. It can explain the rigidity of the galactic disk that creates the galaxy rotation curve and it can explain the repulsion between galaxies and the expanding universe. A formula for the conductivity of hot plasma made of ionized hydrogen can be found in the book: Cosmic Ray Interactions, Propagation and Acceleration in Space Plasmas - L. Dorman Springer, 2006 - Page 1. Conductivity = 2*10^7*T^3/2 Where T is the temperature. The first question one might ask is why you cited a theoretical "toy model" conference proceedings paper in your manuscript, and now are switching to a new citation. *Another question might be, why would a formula for conductivity in a *space plasma* -- i.e. the solar wind -- be applicable to the solar *interior* as you seem to be using it. Finally, as I noted previously, but you ignored, you *assumed* the units were SI (MKS) units. *However, astronomers typically work in c.g.s. units. * In fact, the units of (s^-1) in the conference proceedings you cited are the equivalent c.g.s. units for conductivity. *But since your manuscript uses the cited value as if it were an MKS quantity, your results are incorrect and irrelevant. More authoritative references for the conductivity in the solar body, in MKS units, shows that the conductivity quantities are much smaller than you claim (e.g. Stix 1989, sec 8.1). *Thus, any "magnetic dissipation" would be many orders of magnitude much less than you originally claimed. CM References Stix, M. 1989, *The Sun: An Introduction*, Springer. Hi, You are right there is confusion between cgs units and mks units. To convert the resistivity from cgs to mks the following ratio is used: *1 s = 8.988*10^9 Ohm*m Using this ratio it is possible to convert the formulas from Durney and Dorman. In Durney 9*10^6*T^3/2 is in cgs and when converted to mks will give 0.001*T^3/2 in Dorman the convertion will give 0.002*T^3/2. This is close to the value in Stix that gives 0.003*T^3/2.http://books.google.com/books?id=wxH...n,+Michael+Sti... I did the calculation again using the Stix formula and using 4000000K as the temperature.http://www.pixelphase.com/sun/energy_calc2.pdf This also gives an energy that is larger than what is lost from the sun luminosity. Why are you using the values of plasma conductivity for the chromosphere in your calculation, when the calculation refers to the deeper interior? Why, in your calculations, do you refer to "upper radiative zone" when such descriptions only refer to the standard model of the sun where the energy is produced by fusion? Finally, as noted previously, your supposition of the sun as "almost" a superconductor is not tenable. You supposed that time variation in the intergalactic magnetic field would somehow induce a back-e.m.f. in the sun -- and thus a current -- that resistive heating alone would account for all solar energy production. You "derived" emfs of 3 MV and resistances of 9e-16 Ohm (which I don't necessarily concur with). A simple calculation shows that the induced currents would produce magnetic fields about 10 billion times as much field as the sun actually has. I.e. your supposition leads to ridiculously incorrect magnetic fields. That is because a back-emf can *never* induce a magnetic field larger than the external field that caused it in the first place. The same issue would occur with a superconducting loop experiencing a changing external magnetic field. By your same analogy, the resistance of the loop is nearly zero, so the dissipated power would be nearly infinite. However, in reality, the variations of magnetic field will induce *only* enough current to cancel out the external variations, and the resulting dissipated power would be negligible. Beyond that, the e.m.f. would be short circuited. Thus, in reality, even if the other premises of this "theory" were correct (which I do not admit), the amount of power that could be dissipated in the sun by this process is negligble (1e-9 of solar luminosity). CM |
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On Sun, 8 Feb 2009 12:06:25 -0800 (PST), Craig Markwardt
wrote: On Feb 3, 1:49*pm, wrote: On Sun, 1 Feb 2009 11:45:14 -0800 (PST), Craig wrote: On Jan 30, 3:10*am, wrote: On Wed, 28 Jan 2009 19:13:28 -0800 (PST), Craig wrote: On Jan 27, 5:20*pm, wrote: ... This article is based on a former article that shows that the solar cycle is applied to the sun from the galactic disc and not created internally by a solar dynamo. The solar cycle is what heats the sun by inducing electric currents and not fusion reaction. http://www.philica.com/display_artic...?article_id=65 http://www.pixelphase.com/sun/sun.pdf Strangely, the former article appears to rely on unsubstantiated assumptions. *The author relies crucially on a claim about the electrical resistivity of the sun, as a means to develop large electrical currents, which appears to be incorrect. In particular, the claimed electrical resistivity is based solely on a conference proceedings paper published in 1987. *The conference paper itself is a theoretical paper, not an experimental one, and the electrical properties discussed in the text refer to a theoretical 'toy model' and are not linked to measurements in any way. Furthermore, the Zohar author incorrectly assumes that the conference paper's units are expressed in "SI" metric units, when they quite clearly are not. *It's actually not clear what the units are, but they are not SI, and thus, the Zohar author has made a tragic error. Ultimately, the Zohar author relies on this conference paper to conclude that the Sun is effectively a superconducting substrate. This is purely ludicrous. *There's hardly a way that a 1000-1000000 K thermal plasma can be a superconductor. CM The sun is not a perfect superconductor and it has some resistance. Still this resistance is very low as the sun is made of hot plasma. The low resistance of the sun converts low magnetic fields that cross the sun to very strong current that heat the sun. *The model of a magnet and a superconductor for stars and galaxies is very useful. It can explain the rigidity of the galactic disk that creates the galaxy rotation curve and it can explain the repulsion between galaxies and the expanding universe. A formula for the conductivity of hot plasma made of ionized hydrogen can be found in the book: Cosmic Ray Interactions, Propagation and Acceleration in Space Plasmas - L. Dorman Springer, 2006 - Page 1. Conductivity = 2*10^7*T^3/2 Where T is the temperature. The first question one might ask is why you cited a theoretical "toy model" conference proceedings paper in your manuscript, and now are switching to a new citation. *Another question might be, why would a formula for conductivity in a *space plasma* -- i.e. the solar wind -- be applicable to the solar *interior* as you seem to be using it. Finally, as I noted previously, but you ignored, you *assumed* the units were SI (MKS) units. *However, astronomers typically work in c.g.s. units. * In fact, the units of (s^-1) in the conference proceedings you cited are the equivalent c.g.s. units for conductivity. *But since your manuscript uses the cited value as if it were an MKS quantity, your results are incorrect and irrelevant. More authoritative references for the conductivity in the solar body, in MKS units, shows that the conductivity quantities are much smaller than you claim (e.g. Stix 1989, sec 8.1). *Thus, any "magnetic dissipation" would be many orders of magnitude much less than you originally claimed. CM References Stix, M. 1989, *The Sun: An Introduction*, Springer. Hi, You are right there is confusion between cgs units and mks units. To convert the resistivity from cgs to mks the following ratio is used: *1 s = 8.988*10^9 Ohm*m Using this ratio it is possible to convert the formulas from Durney and Dorman. In Durney 9*10^6*T^3/2 is in cgs and when converted to mks will give 0.001*T^3/2 in Dorman the convertion will give 0.002*T^3/2. This is close to the value in Stix that gives 0.003*T^3/2.http://books.google.com/books?id=wxH...n,+Michael+Sti... I did the calculation again using the Stix formula and using 4000000K as the temperature.http://www.pixelphase.com/sun/energy_calc2.pdf This also gives an energy that is larger than what is lost from the sun luminosity. Why are you using the values of plasma conductivity for the chromosphere in your calculation, when the calculation refers to the deeper interior? Why, in your calculations, do you refer to "upper radiative zone" when such descriptions only refer to the standard model of the sun where the energy is produced by fusion? Finally, as noted previously, your supposition of the sun as "almost" a superconductor is not tenable. You supposed that time variation in the intergalactic magnetic field would somehow induce a back-e.m.f. in the sun -- and thus a current -- that resistive heating alone would account for all solar energy production. You "derived" emfs of 3 MV and resistances of 9e-16 Ohm (which I don't necessarily concur with). A simple calculation shows that the induced currents would produce magnetic fields about 10 billion times as much field as the sun actually has. I.e. your supposition leads to ridiculously incorrect magnetic fields. That is because a back-emf can *never* induce a magnetic field larger than the external field that caused it in the first place. The same issue would occur with a superconducting loop experiencing a changing external magnetic field. By your same analogy, the resistance of the loop is nearly zero, so the dissipated power would be nearly infinite. However, in reality, the variations of magnetic field will induce *only* enough current to cancel out the external variations, and the resulting dissipated power would be negligible. Beyond that, the e.m.f. would be short circuited. Thus, in reality, even if the other premises of this "theory" were correct (which I do not admit), the amount of power that could be dissipated in the sun by this process is negligble (1e-9 of solar luminosity). CM Why are you using the values of plasma conductivity for the chromosphere in your calculation, when the calculation refers to the deeper interior? At the top part of page 308 of stix 1989 it say that the the formula 0.003*T^3/2 is estimated for the sun convection zone. http://books.google.com/books?id=wxH...sult#PPA308,M1 The term "upper radiative zone" is used to denote the depth that its temperature is used to find the conductivity. It is roughly 0.6*Rsun. http://solarscience.msfc.nasa.gov/im...nsity_vs_r.jpg The conductivity according to the calculatiob abouve is very high a bout three times that of copper. The large size of the sun decreases the resistance and gives 9.38*10^-16 ohm. This low resistance cannot be achevied on earth without superconductor. The currents inside the sun that are created by the solar cycle cannot produce magnetic field that oppose the solar cycle. Those induce currents that are created inside the sun are separated into positive ions that flow forward and electrons that flow backward. Since the sun is rotating the opposite charges produce magnetic fields in opposite direction that cancel each other. On Jupiter and other planets the magnetosphere is created by the induce currents and the field that create the magnetosphere is larger then the field of the solar cycle. Read the file on stellar rotation on how the electric charges are separated to creatre the jet streams of jupiter and the sun plasma belts. Regards, Dan Bar-Zohar |
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On Feb 11, 12:41*am, wrote:
On Sun, 8 Feb 2009 12:06:25 -0800 (PST), Craig Markwardt wrote: On Feb 3, 1:49*pm, wrote: On Sun, 1 Feb 2009 11:45:14 -0800 (PST), Craig wrote: On Jan 30, 3:10*am, wrote: On Wed, 28 Jan 2009 19:13:28 -0800 (PST), Craig wrote: On Jan 27, 5:20*pm, wrote: ... This article is based on a former article that shows that the solar cycle is applied to the sun from the galactic disc and not created internally by a solar dynamo. The solar cycle is what heats the sun by inducing electric currents and not fusion reaction. http://www.philica.com/display_artic...?article_id=65 http://www.pixelphase.com/sun/sun.pdf Strangely, the former article appears to rely on unsubstantiated assumptions. *The author relies crucially on a claim about the electrical resistivity of the sun, as a means to develop large electrical currents, which appears to be incorrect. In particular, the claimed electrical resistivity is based solely on a conference proceedings paper published in 1987. *The conference paper itself is a theoretical paper, not an experimental one, and the electrical properties discussed in the text refer to a theoretical 'toy model' and are not linked to measurements in any way. Furthermore, the Zohar author incorrectly assumes that the conference paper's units are expressed in "SI" metric units, when they quite clearly are not. *It's actually not clear what the units are, but they are not SI, and thus, the Zohar author has made a tragic error. Ultimately, the Zohar author relies on this conference paper to conclude that the Sun is effectively a superconducting substrate. This is purely ludicrous. *There's hardly a way that a 1000-1000000 K thermal plasma can be a superconductor. CM The sun is not a perfect superconductor and it has some resistance. Still this resistance is very low as the sun is made of hot plasma. The low resistance of the sun converts low magnetic fields that cross the sun to very strong current that heat the sun. *The model of a magnet and a superconductor for stars and galaxies is very useful. It can explain the rigidity of the galactic disk that creates the galaxy rotation curve and it can explain the repulsion between galaxies and the expanding universe. A formula for the conductivity of hot plasma made of ionized hydrogen can be found in the book: Cosmic Ray Interactions, Propagation and Acceleration in Space Plasmas - L. Dorman Springer, 2006 - Page 1. Conductivity = 2*10^7*T^3/2 Where T is the temperature. The first question one might ask is why you cited a theoretical "toy model" conference proceedings paper in your manuscript, and now are switching to a new citation. *Another question might be, why would a formula for conductivity in a *space plasma* -- i.e. the solar wind -- be applicable to the solar *interior* as you seem to be using it. Finally, as I noted previously, but you ignored, you *assumed* the units were SI (MKS) units. *However, astronomers typically work in c.g.s. units. * In fact, the units of (s^-1) in the conference proceedings you cited are the equivalent c.g.s. units for conductivity. *But since your manuscript uses the cited value as if it were an MKS quantity, your results are incorrect and irrelevant. More authoritative references for the conductivity in the solar body, in MKS units, shows that the conductivity quantities are much smaller than you claim (e.g. Stix 1989, sec 8.1). *Thus, any "magnetic dissipation" would be many orders of magnitude much less than you originally claimed. CM References Stix, M. 1989, *The Sun: An Introduction*, Springer. Hi, You are right there is confusion between cgs units and mks units. To convert the resistivity from cgs to mks the following ratio is used: *1 s = 8.988*10^9 Ohm*m Using this ratio it is possible to convert the formulas from Durney and Dorman. In Durney 9*10^6*T^3/2 is in cgs and when converted to mks will give 0.001*T^3/2 in Dorman the convertion will give 0.002*T^3/2. This is close to the value in Stix that gives 0.003*T^3/2.http://books.google.com/books?id=wxH...n,+Michael+Sti... I did the calculation again using the Stix formula and using 4000000K as the temperature.http://www.pixelphase.com/sun/energy_calc2.pdf This also gives an energy that is larger than what is lost from the sun luminosity. Why are you using the values of plasma conductivity for the chromosphere in your calculation, when the calculation refers to the deeper interior? Why, in your calculations, do you refer to "upper radiative zone" when such descriptions only refer to the standard model of the sun where the energy is produced by fusion? Finally, as noted previously, your supposition of the sun as "almost" a superconductor is not tenable. *You supposed that time variation in the intergalactic magnetic field would somehow induce a back-e.m.f. in the sun -- *and thus a current -- that resistive heating alone would account for all solar energy production. *You "derived" emfs of 3 MV and resistances of 9e-16 Ohm (which I don't necessarily concur with). A simple calculation shows that the induced currents would produce magnetic fields about 10 billion times as much field as the sun actually has. *I.e. your supposition leads to ridiculously incorrect magnetic fields. *That is because a back-emf can *never* induce a magnetic field larger than the external field that caused it in the first place. The same issue would occur with a superconducting loop experiencing a changing external magnetic field. *By your same analogy, the resistance of the loop is nearly zero, so the dissipated power would be nearly infinite. *However, in reality, the variations of magnetic field will induce *only* enough current to cancel out the external variations, and the resulting dissipated power would be negligible. Beyond that, the e.m.f. would be short circuited. *Thus, in reality, even if the other premises of this "theory" were correct (which I do not admit), the amount of power that could be dissipated in the sun by this process is negligble (1e-9 of solar luminosity). CM Why are you using the values of plasma conductivity for the chromosphere in your calculation, when the calculation refers to the deeper interior? At the top part of page 308 of stix 1989 it say that the the formula 0.003*T^3/2 is estimated for the sun convection zone.http://books.google.com/books?id=wxH...n,+Michael+Sti... The term "upper radiative zone" is used to denote the depth that its temperature is used to find the conductivity. It is roughly 0.6*Rsun.http://solarscience.msfc.nasa.gov/im...nsity_vs_r.jpg But that still begs the question.... why are you using the terminology and estimates of the standard solar model, when clearly you do not believe the standard solar model is correct? The conductivity according to the calculatiob abouve is very high a bout three times that of copper. The large size of the sun decreases the resistance and gives 9.38*10^-16 ohm. This low resistance cannot be achevied on earth without superconductor. As already mentioned, but you conveniently ignored, the "superconductor" interpretation has several implications. First, a superconductor will resist all changes in externally applied magnetic field, because the changing field will induce an opposing e.m.f. (and current) which perfectly cancels out the applied change. Second, the induced opposing current cannot generate a magnetic field larger than the original applied change. The currents inside the sun that are created by the solar cycle cannot produce magnetic field that oppose the solar cycle. ... Your claim is odd. Your original "theory" claimed that the solar cycle is induced by changing interstellar magnetic fields at the sun's position, and that somehow these external fields induce a large resistive electrical dissipation within the sun. Your "currents ... created by the solar cycle" phrasing appears to be a diversion to hide the original claim. *Any* currents induced within the sun by a changing external magnetic field will *oppose* the external change... that is the nature of Lenz's law which you yourself invoked! It doesn't matter whether "electrons flow forward" or "ions flow backward," the only important factor is the net charge flow. And in fact, in such a flow where electrons/ions flow forward/backward, the magnetic field does *not* cancel out, as you erroneously claimed. If you had bothered to take your claimed e.m.f. and resistance, and calculate the amount of induced current implied by those values, you would find an amount of current which would produce a completely unphysical magnetic field, a magnetic field many billions of times more than the sun actually has. Thus, your "theory" cannot be correct. The reason it fails is because you did not consider the limitations of Lenz's law before you applied it. CM |
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