A friend of mine sent this picture of strangely series-connected coils that he is claiming unusual effects from.
The verrtical coils are wound on steel cores. It looks like two layers starting and ending at the base.
The donut coils are on steel rings. Their conecting wires are thicker.
Note that there is a break in each of the latter that faces toward the periphery of the array. I assume this is to release some of the flux radially.
The unit is powered by pulsed high current DC, being a diode rectified square wave.
The three different levels of particle board on which it is built seems to be to add a contour, or asymmetry, to the generated field.
The stated purpioe is to demonstrate Lorenz force generated by the interactions of the sets of two types of coils. I imagine the current in each set of coils can be adjusted separately.
it would appear the assembly moves or vibrates on the bench, but not due to mechanical force.
Can anyone with experience in electromagnetics please provide some clue as to what is happening with this?
Why is the array configured the way it is, and what are the field interactions involved that might produce such an effect?