Only humans have created artificial magnets that are differently poled. In doing so, the different (positive and negative) loads can be found on one side, unlike natural magnets. Opposite poles attract each other and equal poles repel each other.
The polar principle can be observed in our daily life in the form of day and night, hot and cold, good and bad, right and wrong, etc. Also in far eastern philosophy and acupuncture, a healing method from Chinese medicine, the duality, otherwise known as the principal of Yin (= negative) and Yang (= positive), is the focal point.
The magnetic lines of force which run from pole to pole move in a three dimensional rotation. In the force field of the North Pole and South Pole the electrons move (electron spin) in a counter-clockwise and clockwise direction respectively. The various biological forces of both magnetic poles were already discovered and described by Albert Davis in 1936.