Verschuur doesn’t mention Bessel function fields, only models the axial background field and the supposed generated toroidal field. Yet the “magnetic turbulence” he mentions, is described in the literature as magnetic field directions “reversing on regular distance scales”, fitting the Bessel model proposed by Don Scott. So the question first is what determines the boundary conditions in that model.
If you look at Don’s model for galactic rotation, but also and more importantly what is OBSERVED in the water bridge experiments, there is a radial electric field in a filament. In the water bridge, if there is a charge at the center, and the opposite charge spiraling around the outside, it is the radial electric field that holds the spiraling charge to the center?
In the water bridge experiments at least, I think we agree that it is not an internal self gravity that holds it together? At the very least, if we have charge of one sign traveling more axially along the center, and charge of the opposite sign spiraling around the outside, then that electric field does matter, even if it’s not the only force to consider?
I like your suggestion of the radial Electric field.
The water bridge has not yet been explained. I like your description. But I also think we cannot yet explain the physics there. I did some of those experiments myself, with ~10kV. fascinating. I did not clearly see counter rotation, but I did see plenty of complex circulations in the bridge. I also saw a clear exchange between the two beakers. Once, one of the beakers filled up and the other emptied. Once, one beaker became cloudy and the other stayed clear.
Verschuur doesn’t mention Bessel function fields, only models the axial background field and the supposed generated toroidal field. Yet the “magnetic turbulence” he mentions, is described in the literature as magnetic field directions “reversing on regular distance scales”, fitting the Bessel model proposed by Don Scott. So the question first is what determines the boundary conditions in that model.
Jim, agreed, the Carlqvst/Bennet/Verscuur model does not include the coaxial flows.
However, the coaxial models have not been developed that will tell us how many sheaths are created for a given power flowing in the tubes.
So I think Verschuur's treatment is good enough for first approximation.
On my list for SAFIRE work is to experimentally find the number of sheaths as a function of power for dusty plasmas.
If you look at Don’s model for galactic rotation, but also and more importantly what is OBSERVED in the water bridge experiments, there is a radial electric field in a filament. In the water bridge, if there is a charge at the center, and the opposite charge spiraling around the outside, it is the radial electric field that holds the spiraling charge to the center?
In the water bridge experiments at least, I think we agree that it is not an internal self gravity that holds it together? At the very least, if we have charge of one sign traveling more axially along the center, and charge of the opposite sign spiraling around the outside, then that electric field does matter, even if it’s not the only force to consider?
I like your suggestion of the radial Electric field.
The water bridge has not yet been explained. I like your description. But I also think we cannot yet explain the physics there. I did some of those experiments myself, with ~10kV. fascinating. I did not clearly see counter rotation, but I did see plenty of complex circulations in the bridge. I also saw a clear exchange between the two beakers. Once, one of the beakers filled up and the other emptied. Once, one beaker became cloudy and the other stayed clear.