I forgot the MHD. I agree, it's really the same principle. I would just like the system to be solid state. In MHD, forces act on the charges of a conductive fluid to provide relative motion. I'm looking for a way so that the forces on the charges provide a current. We are in 3D: an electric field along X to move electrons back and forth in a current I along X, a transverse magnetic field B along Y, synchronous with I, and which deflects electrons perpendicularly, i. e. along Z, always in the same direction. Therefore, we should detect a current along Z, a kind of full wave rectified current. Even if we don't have the DC component, we should see this double frequency signal. But I never could detect it. Something must be missing or wrong.
A rotating magnetic field created between two perpendicular windings driven in quadrature will accelerate charges, but it will not accelerate them in the directions depicted in the diagram below - which you seem to think. Hint: Charges will not be accelerated at all in the middle of the depicted apparatus (along the Y axis and close to it) creating a kind of an "acceleration hole" there. You have to consider the tangential velocity of the rotating magnetic field line with respect to every charge and then you will get the correct directions of charge acceleration. The matter is further complicated by the fact that magnetic field lines always form closed loops, and the returning flux is rotating, too (at least in free space - if not guided by a core). That returning flux accelerates charges, too ...but in opposite direction. To illustrate this, I have drawn one positive charge in green color which is inside the return flux. P.S. Yes, it is true that positive and negative charges will be accelerated by the q.VxB force in opposite directions, but according to the convention of our scientific jargon these opposite motions of opposite charges constitute current in THE SAME DIRECTION !!! Conversely, two opposite charges moving IN THE SAME DIRECTION constitute electric current in opposite directions It is just a matter of jargon - not a matter of direction of motion. Smudge mentioned that but you seemed to misunderstand him.
« Last Edit: 2019-01-30, 17:13:36 by verpies »
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