Engineering Physics: Unit II: Electromagnetic Waves
Propagation of Electromagnetic wave through a Dielectric medium (non - conducting isotropic medium)
Equation of propagation of magnetic vector, H, Equation of propagation of electric vector, E
PROPAGATION OF ELECTROMAGNETIC WAVE THROUGH A DIELECTRIC MEDIUM (Non - Conducting Isotropic Medium) Maxwell's equations are In an isotropic dielectric (or non-conducting isotropic medium) Therefore, Maxwell's equations in this case take the form Equation of propagation of magnetic vector, H Taking curl of eqn. (4), we get Putting values from eqns.(2) and (3), we get Equation of propagation of electric vector, E Taking of eqn. (3), we get Putting values from eqns (1) and (4), we get The eqns (6) and (7) is compared with the general wave equation, where v is the speed of wave. This means that the field vectors Now, Refractive index is In a non-magnetic medium μr = 1 
are propagated isotropic dielectric as waves with speed v given by
= c, speed of electromagnetic waves in free space.
Engineering Physics: Unit II: Electromagnetic Waves : Tag: : - Propagation of Electromagnetic wave through a Dielectric medium (non - conducting isotropic medium)
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PH3151 1st semester | 2021 Regulation | 1st Semester Common to all Dept 2021 Regulation