Author:
Gorbatsevich, Felix F.
Category:
Research Papers
Sub-Category:
Mechanics / Electrodynamics
Date Published:
December 27, 2013
Abstract:
The influence of an electric current on the behavior of a magnetic needle was first discovered by Oersted in 1820. Faraday observed the electro-induction phenomenon. Later it was shown that equipotential lines of the magnetic field around a conductor with current are concentric circles. Here is how Pointing described the rise of lines of force around a conductor with current: "When the strength of the electric current that flows in a direct conductor increases gradually from zero, the ambient space is being filled with magnetic lines of force that have the shape of circles arranged around the conductor's axis. “….”These lines of force travel outward from the conductor in such a way that the magnetic field grows, since the conductor constantly emits lines of force which expand and travel, just as ripples caused by a stone thrown in still water”.
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