Magnetic poles rotate in opposite directions:
North = anticlockwise =negative
South = clockwise =positive

Tesla discovered that permanent magnetic poles could be created in
isolation(without current flow) by connecting together in opposing directions
two like poles that had been induced 180 deg out of phase. (transformer
secondary or possibly stationary wave from earth)

A north pole was these two like poles both rotating anticlockwise but flowing in
opposite directions, one flowing in and the other flowing out the end of the
pole.
A south pole was created exactly the same was only the poles were rotating
clockwise.

A permanent magnet with a different pole at either end could than be explained
as in the dead area in the center of the magnet (electro magnets don't have dead
centers) the inflow of the north pole feeds into the outflow of the south pole
and the inflow of the south pole feeds into the outflow of the north pole. This
occurs because at the point of intersection they are rotating and flowing in the
same direction even though they are different polarities.

(I had to get 4 pencils and rotate them to get this clear in my head)

Each pole of a permanent magnet therefore contains the opposing polarity flowing
outward and rotating in the same direction.

A north pole contains a reversed south = negative is the same as a reversed
positive

A south pole contains a reversed north =positive is the same as a reversed
negative

When this convergence occurs across the dead point and the two flows of each
independent pole connect to form a permanent magnet you end up with only two
flows.

Break a permanent magnet anywhere along its length and all you are doing is
shortening the distance between the poles.

A single pole created in isolation as described above produces the pole in
question at the outer end and the opposing pole at the inner end, therefore a
south pole can be created from two north poles and a north pole can be created
from two south poles.

Tesla used this to create 4 isolated north poles per cycle or 4 isolated south
poles per cycle from two alternating polarities.