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The magnetic fields in this system were made by electromagnets placed close together. This was a theoretical construct used to model how to contain plasma. The fields were made by two coils of wire facing one another. These electromagnets had poles which faced one another and in the center was a null point in the magnetic field. This was also ...
Birkeland currents are also one of a class of plasma phenomena called a z-pinch, so named because the azimuthal magnetic fields produced by the current pinches the current into a filamentary cable. This can also twist, producing a helical pinch that spirals like a twisted or braided rope, and this most closely corresponds to a Birkeland current.
Since the force on charges expressed by the Lorentz equation depends upon the relative motion of the magnetic field (i.e. the laboratory frame) to the conductor where the EMF is located it was speculated that in the case when the magnet rotates with the disk but a voltage still develops, the magnetic field (i.e. the laboratory frame) must ...
A new study reveals a brand new type of star that could be key to understanding the formation of magnetars, a bizarre and perplexing celestial phenomenon.
source field (e.g. P − P c / P c where P is the pressure and P c the critical pressure for the liquid-gas critical point, reduced chemical potential, the magnetic field H for the Curie point) χ: the susceptibility, compressibility, etc.; ∂ψ / ∂J ξ: correlation length: d: the number of spatial dimensions ψ(x →) ψ(y ...
Secular variation can be observed in measurements at magnetic observatories, some of which have been operating for hundreds of years (the Kew Observatory, for example). Over such a time scale, magnetic declination is observed to vary over tens of degrees. [1] A movie on the right shows how global declinations have changed over the last few ...
The magnetospheric eternally collapsing object (MECO) is an alternative model for black holes initially proposed by Indian scientist Abhas Mitra in 1998 [1] [2] [3] and later generalized by American researchers Darryl J. Leiter and Stanley L. Robertson. [4]
In this scheme the qubit's magnetic susceptibility, which is defined by its state, changes the phase angle between the current and voltage when a small A.C. signal is passed into the tank circuit. Prof. Petrashov's group at Royal Holloway [ 9 ] are using an Andreev interferometer probe to read out flux qubits.