Applied Physics I: Chapter 6: Oscillations and Waves - Electromagnetic Waves
Electromagnetic Waves: Introduction
Electromagnetic waves are constituted by periodic variation of electric and magnetic fields. Though these two fields are seperate, yet, they are closely related to each other.
Oscillations
& Wave ‒ Electromagnetic Waves
INTRODUCTION
Electromagnetic
waves are constituted by periodic variation of electric and magnetic fields.
Though these two fields are seperate, yet, they are closely related to each
other. These waves propagates in such a way that the electric and magnetic
fields are perpendicular to each other and also perpendicular to the direction
of propagation of waves. Thus, the electromagnetic waves are transverse in
nature.
We
know in sound waves, water waves, waves in stretched strings etc, the particles
will move, whereas in electromagnetic waves, the particles will not move.
Therefore, only the field intensities will change in electromagnetic waves.
Maxwell's
equations predict the existance of electromagnetic waves, which propagates in
free space (or) vacuum with the velocity of light. Electromagnetic theory is
the scientific theory that is used to explain the electromagnetic waves, their
properties and applications.
In
this chapter we are going to discuss about the Maxwell's equations and the
mechanism involved in the propagation of electromagnetic waves in free space
and matter, along with the laws that govern these equations. Further,
discussions were made on energy, momentum, radiation pressure and properties of
electromagnetic waves.
Applied Physics I: Chapter 6: Oscillations and Waves - Electromagnetic Waves : Tag: Applied Physics : - Electromagnetic Waves: Introduction
Applied Physics I: Chapter 6: Oscillations and Waves - Electromagnetic Waves
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