Just for interest there are two common direct uses I know of for the
Lorenz effect.

One is for pumping liquid solder in wave solder machines.  If you have a
pipe filled with liquid solder and you put a magnetic field crosswise
through the pipe and an electric current vertically through the pipe it
pumps solder through the pipe.  There are no moving parts except the
solder so maintenance is easy.  I have heard of something similar for
pumping liquid sodium in nuclear reactors.

The other use is for measuring currents of seawater.  The probe is
usually ball shaped with magnetic pole pieces protruding from the top
and bottom.  An AC magnetic field is impressed in the seawater
surrounding the ball.  Electrodes on the equator of the ball pick up the
electric field produced by the sea water moving through this field.
Again there are no moving parts so maintenance is easy and these current
meters can withstand seaweed, tree branches, etc.  They are good for
measuring storm waters as they batter coastal constructions.

Both of these are clearly moving conductor / stationary magnetic field
machines.

Sherpa Doug

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