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Magnetic reconnection is the process whereby magnetic field lines from different magnetic domains are spliced to one another, changing their patterns of connectivity with respect to the sources. It is a violation of an approximate conservation law in plasma physics, and can concentrate mechanical or magnetic energy in both space and time. Solar flares, the largest explosions in the solar system, may involve the reconnection of large systems of magnetic flux on the Sun, releasing, in minutes, energy that has been stored in the magnetic field over a period of hours to days. Magnetic reconnection in Earth’s magnetosphere is one of the mechanisms responsible for the aurora, and it is important to the science of controlled nuclear fusion because it is one mechanism preventing magnetic confinement of the fusion fuel.
Hannes Alfvén was explicit in his condemnation of the reconnecting concept:
“Of course there can be no magnetic merging energy transfer. Despite.. this, we have witnessed at the same time an enormously voluminous formalism building up based on this obviously erroneous concept.
I was naïve enough to believe that [magnetic reconnection] would die by itself in the scientific community, and I concentrated my work on more pleasant problems. To my great surprise the opposite has occurred: ‘merging’ … seems to be increasingly powerful. Magnetospheric physics and solar wind physics today are no doubt in a chaotic state, and a major reason for this is that part of the published papers are science and part pseudoscience, perhaps even with a majority in the latter group.”
They have reinvented the wheel and done a bad job of it. If you are going to come up with an alternative explanation for something – at least get one that is defensible scientifically.
If we look closely at the reason for this reinvention, it becomes clear that, having adamantly refused to acknowledge the effects (let alone the existence) of electric currents in space, astrophysicists had to come up with an explanation that avoided mentioning them. Moreover, in giving this explanation a catchy name – “reconnection” – that appears repetitively, they can avoid restating the details of their invented explanation each time they use it and thus avoid having to defend it. We hear “Oh, that is an example of reconnection.” “Yes, another effect of the reconnection process.” Etc., ad nauseum.
In the law, a well known principle is that ‘Ignorance of the law is no defense.’ Similarly in science, intentional ignorance of the work of an entire academy of scholars and researchers that has applicability to the area in which you are involved, is evidence of either incompetence or a lack of ethical behavior. There can be no excuse for astrophysicists ignoring the work of investigators such as Nobel laureates Hannes Alfvén and Irving Langmuir.
As neither double layer nor circuit can be derived from magnetofluid models of a plasma, such models are useless for treating energy transfer by means of double layers. They must be replaced by particle models and circuit theory.
The second concern is that the construct of moving field lines is sometimes confused with the concept of moving flux tubes. A flux tube can be thought of as an ensemble of field lines that are identified by their low energy plasma, which moves at the E×B/B2 velocity. Some researchers have asserted that as the plasma moves from region A to region B at this velocity, the field lines that were at A are later at B, so the magnetic field lines moved together with the plasma. This conclusion is wrong for two reasons. First, it is meaningless to assert that a field line that was at A is now at B, because there is no way to identify or distinguish one magnetic field line from another. Second, the concept of moving magnetic field lines is reasonable if it is used only for visualizing the temporal evolution of the magnetic field, and then, only if equation (2) is satisfied. This point is emphasized by the fact that there are an infinite number of field line velocities that produce the correct temporal evolution of the field when equation (2) is satisfied [Vasyliunas, 1972].[17]
“It should be noted that before the ignition of BPD, the double layer becomes unstable, and large amplitude potential fluctuations are observed. Figure 9a shows the fluctuations in the local electric field as measured by the diagnostic electron beam. The electric field fluctuates at a frequency of approximately 1 kHz.”[23]
Laboratory measurements demonstrate that a nonzero-valued electric field in the direction of the current (E parallel > 0) is required to produce a nonzero current density within any plasma no matter what mode of operation the plasma is in. Negative-slope regions of the volt-ampere characteristic (negative dynamic resistance) of a plasma column reveal the cause of the filamentary properties of plasma, but all static resistance values are measured to be > 0.
Thus, although plasmas are excellent conductors, they are not perfect conductors. Weak longitudinal electric fields can and do exist inside plasmas. Therefore, magnetic fields are not frozen inside them.[16]
As neither double layer nor circuit can be derived from magnetofluid models of a plasma, such models are useless for treating energy transfer by means of double layers. They must be replaced by particle models and circuit theory. A simple circuit is applied to the energizing of auroral particles, to solar flares, and to intergalactic double radio sources. Application to the heliospheric current systems leads to the prediction of two double layers on the Sun’s axis which may give radiations detectable from earth. Double layers in space should be classified as a new type of celestial object. It is suggested that X-ray and gamma-ray bursts may be due to exploding double layers (although annihilation is an alternative energy source). The way the most used textbooks in astrophysics treat concepts like double layers, critical velocity, pinch effects and circuits was studied. It is found that students using these textbooks remain essentially ignorant of even the existence of these, although some of the phenomena were discovered 50 yr ago.
Stability: Double layers in laboratory plasmas may be stable or unstable depending on the parameter regime. [Torven, S. High-voltage double layers in a magnetised plasma column] ” (1982) “Journal of Physics D: Applied Physics”, Volume 15, Issue 10, pp. 1943-1949] Various types of instabilities may occur, often arising due to the formation of beams of ions and electrons. Unstable double layers are “noisy” in the sense that they produce oscillations across a wide frequency band. A lack of plasma stability may also lead to a dramatic change in configuration often referred to as an explosion (and hence “exploding double layer”). In one example, the region enclosed in the double layer rapidly expands and evolves. [B Song, N D Angelo and R L Merlino Stability of a spherical double layer produced through ionization] ” (1992) Journal of “Physics D: Applied Physics”, Volume 25, Issue 6, pp. 938-941] An explosion of this type was first discovered in mercury arc rectifiers used in high-power direct-current transmission lines, where the voltage drop across the device was seen to increase by several orders of magnitude. Double layers may also drift, usually in the direction of the emitted electron beam, and in this respect are natural analogues to the smooth–bore magnetron. [ Koenraad Mouthaan and Charles Süsskind, Statistical Theory of Electron Transport in the Smooth-Bore Magnetron] (1966) “Journal of Applied Physics” June 1966, Volume 37, Issue 7, pp. 2598-2606 ] ) (not to be confused with a unit of magnetic moment, the Bohr magneton, which is created by the “classical circular motion” of an electron around a proton).
“In addressing these global issues, we note that all classical models fail when particularly long global lengths are assumed for the current layers.”
As George Box said:
Originally posted by mnemeth1
Alfven makes the point that:
As neither double layer nor circuit can be derived from magnetofluid models of a plasma, such models are useless for treating energy transfer by means of double layers. They must be replaced by particle models and circuit theory.
All models are wrong; some models are useful....
I think Einstein realized this too which is why at times he expressed some doubts about his own model like any smart person would, and expected his model to be replaced by a more complete model like his model was a more complete model than Newton's.
I suppose we could say "All models are incomplete representations of reality; some models are useful." Wordy, but more accurate.
Are you claiming that Einstein made claims about frozen in fields? If so please cite which paper/section.
Originally posted by mnemeth1
reply to post by Arbitrageur
Any theory that uses frozen in fields is wrong.
Originally posted by mnemeth1
reply to post by 46ACE
In a plasma, electrons are separated and stand on their own.
In a "frozen in" plasma, scientists make the assumption that there are no moving electrons and that the magnetic field is sustained in violation of the known laws of physics.
Originally posted by Arbitrageur
Are you claiming that Einstein made claims about frozen in fields? If so please cite which paper/section.
Originally posted by mnemeth1
reply to post by Arbitrageur
Any theory that uses frozen in fields is wrong.
Does this include the orbit of the planets around the sun? Are you saying it's electricity, not gravity, that causes the planets to orbit the sun?
Originally posted by mnemeth1
Therefore all gravitationally based theories of cosmological phenomena are wrong
Originally posted by Arbitrageur
Does this include the orbit of the planets around the sun? Are you saying it's electricity, not gravity, that causes the planets to orbit the sun?
Originally posted by mnemeth1
Therefore all gravitationally based theories of cosmological phenomena are wrong
I thought the gravitational model worked pretty well in our own solar system, not only for planets but also for launching space probes like Voyager etc using gravitational slingshot effects.
And I really don't understand this false dichotomy between electricity and gravity that some people try to present. The universe isn't either gravitational or electrical, there are obviously both gravitational and electrical/electromagnetic processes taking place. Gravity explains some observations, and electromagnetism explains other observations. And some observations so far haven't been explained by either one, like dark matter observations of galactic clusters.
And I still don't understand the connection between Einstein and magnetic reconnection (no pun intended but I guess it's unavoidable)
Originally posted by mnemeth1
reply to post by 46ACE
In a plasma, electrons are separated and stand on their own.
In a "frozen in" plasma, scientists make the assumption that there are no moving electrons and that the magnetic field is sustained in violation of the known laws of physics.
Originally posted by Angelic Resurrection
Somehow a stationary or trapped photon or electron is hard to imagine
If "all models are wrong and some are useful", I'd say the gravitational model has been pretty useful even if it's "wrong" in the sense I described in my previous post.
Originally posted by mnemeth1
They are wrong in as much as they conclude that bending space is responsible for gravity.
1. I've never seen the "why" explained. But it goes back to the quote that "some models are useful". The gravitational model certainly seems to work in our own solar system, so it's useful for predicting the orbits of planets and the trajectories of satellites. But the fact we can't explain "why" doesn't add validity to (insert alternate model here).
Originally posted by mnemeth1
Provide me with papers demonstrating the following:
1. Laboratory proof of why matter should curve spacetime.
2. Laboratory proof that dark matter actually exists.
3. Laboratory proof that dark energy actually exists.
4. Laboratory proof that magnetic monopoles exist.
The theory breaks down when typical length scales (screening length, monopole separation) become of the order of the lattice constant. This happens for temperatures above approximately 1K, where the spin ice state gives way to a more conventional paramagnet, and monopoles cease to be suitable quasiparticles
Some condensed matter systems propose a structure superficially similar to a magnetic monopole, known as a flux tube. The ends of a flux tube form a magnetic dipole, but since they move independently, they can be treated for many purposes as independent magnetic monopole quasiparticles. In late 2009, numerous news reports from the popular media incorrectly described this phenomenon as the long-awaited discovery of the magnetic monopoles, but the two phenomena are only superficially related to one another.[10]
Oleg Tchernyshyov at Johns Hopkins University in the US said that the findings of both teams are in agreement with a theory (see "'Spin ice' could contain magnetic monopoles") that was unveiled last year by several of Morris's colleagues. However, he cautions that the theory and experiments are specific to spin ices, and are not likely to shed light on magnetic monopoles as predicted by Dirac.