CHAPTER 18
Electromagnetic Waves
18.1 Introduction
The changing electric and magnetic fields produce electromagnetic disturbance; this disturbance moves in the form of electromagnetic waves. Here we discuss about the formation of electromagnetic wave equation, transverse nature of electric and magnetic field in the wave, propagation of electromagnetic waves in different media and the energy density flow.
18.2 Electromagnetic wave equation
Maxwell's equations, which contain the partial derivatives of the electric field 
and the magnetic field 
are ...
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