Reference: Disturbance Theory
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Newton defined inertia in his book “Philosophiæ Naturalis Principia Mathematica” as follows:
The vis insita, or innate force of matter, is a power of resisting by which every body, as much as in it lies, endeavours to preserve its present state, whether it be of rest or of moving uniformly forward in a straight line.
The electromagnetic field has been discovered since the time of Newton. So the concept of inertia may now be extended to the electromagnetic field, which is a substance more fundamental than matter.
The electromagnetic field must form itself continually in each cycle in order to exist Permittivity (ε) is the measure of resistance that is encountered when forming an electric field in a particular medium. Permeability (μ) is a measure of how easily a magnetic field can pass through a medium.
For the formation of electromagnetic…
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