The bifilar pancake coil has two windings in the form of two spirals.
In between these windings there are 2 spiral "canals" where the dielectric field resides.
A standing wave seems to exist at the resonant frequency, and when pulsed with a single polarity pulse, there is also a static magnetic field (static, meaning a fixed polarity shown by a compass).
It seems the dielectric field overflows from the center and starts flowing over the windings at 90 degrees, it always chooses a direction to one side of the coil, making the north pressure stronger than the south(under pressure), where the ether flow is sucked in.
But when pulsed from both ends with opposite polarity pulses, at the same time, at the resonant frequency,
The 2 canals, where the dielectric field resides, might flow (ether flow) in opposite directions.
One canal flows inward, and one channel flows outward. The field in the center, now is flowing from one channel into the other channel.
the energy doesnt overflow, and doesnt create a magnetic field.
But there is rotation in the center of the hole, and around the outside of the coil.
The channels are counter spiraling between the windings. Inward and outward.
With the single pulsed coil, this counter rotation, only exists above and below the coil, forming the magnetic fields north and south, centripetal and centrifugal.
But in the double pulsed coil, the centrifugal and centripetal (inwards and outwards) spirals of energy/ether are residing between the windings, counter rotating ether fields.