Physics Asked on May 16, 2021
Let’s take Faraday’s experiments of induce emf where He take a loop and a magnetic field, for instance let’s suppose we have an coil and a magnet, Now If we move the magnet towards the coil there will be an induce electric field and Thus the force $vec{F}=qvec{E}$ on charges of loop and thus the induce electric field but Now suppose I’m in frame of reference that is moving along with magnet with the same velocity as the magnet so that magnet is rest in my frame but coil is moving, in this case I will say charge in coil is moving in magnetic field and thus there is an Lorentz force $vec{F}=q(vec{v}timesvec{B}) $ and thus the induce emf. So How the same phenomenon is explained from two different Frame of reference with two different principals? Or my reasoning is wrong? Is it possible that a same phenomenon( as here) In general, Can be explained with two different principals from two different frame of reference?
Your reasoning is actually right! And it is one of the key arguments that brought Einstein to formulate the special theory of relativity.
In the context of special relativity, the transformations that links two different inertial frames of reference (IFR), are called the Lorentz transformations, and it happens that a phenomenon described by an electric field in one IFR, is described by a magnetic one in some other IFR.
My answer is more of a hint rather than a serious and detailed explanation that you can find in every textbook that treat special relativity. I suggest you in particular the chapter Electrodynamics and Relativity of Griffith's Introduction to Electrodynamics, where he starts right from this "duality" of electrodynamics (i.e. same phenomenon, two different physical origin in two different IFR).
Answered by zkanego on May 16, 2021
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