- #1
Dexter Neutron
- 50
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An EM wave is nothing but just magnetic and electric fields regenerating each other. Now if a charge oscillates and it produces sinusoidally varying magnetic field which induces an electric field perpendicular to it at the same place.This induced electric field even varies sinusoidally thus again producing a magnetic field still perpendicular to it varying sinusoidally. This process continuous. The question now arises is that all the field are induced perpendicular to each other at the same place so how does the system of electric and magnetic fields move away? i.e. fields inducing at the same place would produce something called stationary EM wave but we actually know that it is not stationary so what causes it to move?