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Magnetically Induced Rotating Rayleigh-Taylor Instability
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Magnetically Induced Rotating Rayleigh-Taylor Instability

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Two-dimensional behavior of three-dimensional magnetohydrodynamic flow with a strong guiding field

Alexandros Alexakis1

  • 1Laboratoire de Physique Statistique de l'Ecole Normale Supérieure, UMR CNRS 8550, Paris, France.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|December 21, 2011
PubMed

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A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
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Potential Due to a Magnetized Object

Magnetic dipoles in magnetic materials are aligned when placed under an external magnetic field. For paramagnets and ferromagnets, dipole alignment occurs in the direction of the magnetic field. However, the dipoles align opposite to the field in the case of diamagnets. This state of magnetic polarization due to the external field is called magnetization. Magnetization is defined as the dipole moment per unit volume. It plays a similar role to polarization in electrostatics.
The vector...
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Magnetostatic Boundary Conditions

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A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
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Divergence and Curl of Magnetic Field

The magnetic field due to a volume current distribution given by the Biot–Savart Law can be expressed as follows: