Abstract
A method is described for increasing the stability of a fluid column against convection (such as thermal or electromagnetic convection) by superimposing upon a stabilizing vertical density gradient a parallel gradient of electromagnetic force density. The latter gradient is generated by creating a gradient of electrical conductivity concomitant with the vertical density gradient and maintaining at right angles to this gradient electric current traversed by a perpendicular homogeneous magnetic field. To obtain a stable column, one must choose the directions of the current and the magnetic field such as to make the electromagnetic force vector point in the direction of increasing electrical conductivity. Conditions under which the stability of a density gradient is reinforced, diminished or neutralized are considered as well as the engendering of instability by electromagnetic forces in a column stabilized by a density gradient.
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