The presence of natural forces of electric and magnetic origin was widely observed in different historical contexts independently, although it was only in the first half of the nineteenth century that a group of scholars was able to unify the two areas of study, consolidating the foundations of a new view of the physical structure of bodies in general.

It was not until the late eighteenth century that researchers Charles-Augustin de Coulomb and Henry Cavendish were able to determine the empirical laws governing the foundation, as well as the behavior of electrically charged substances and magnets.             Rubber AP60

Even if the similarity between the characteristics of the two phenomena indicated a possible relationship between them, it was only in 1820 that an experimental proof of this relationship was obtained, when the Danish Hans Christian Oersted, placing a compass near a wire connecting the two poles of an electric pile, concluded that the compass’s compass needle would instantly indicate the north, indicating a direction perpendicular to the wire.

Some time later André-Marie Ampère could prove that two electric currents exerted a mutual influence in the moment in which they circulated by means of wires that were next to each other.

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