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CONSERVATION LAWS IN ELECTRODYNAMICS

 IN THE FOLLOWING CONTENT YOU WILL GET AN INSIGHT INTO THE WORLD OF ELECTRODYNAMICS ....... LETS START THE JOURNEY TO LEARN THE CONSERVATION LAWS IN ELECTRODYNAMICS... FOLLOWING CONTENT WILL COVER..... ‰ Poynting’s theorem  ‰ Energy conservation in electrodynamics ‰ The Maxwell stress tensor (which gets rather messy)  ‰ Momentum conservation in electrodynamics Poynting’s theorem Suppose a collection of charges and currents lies entirely within a volume V. If they are released at some point in time, electromagnetic forces will begin to do work on them. Consider, for instance, the work done by the forces on charges and currents in an infinitesimal volume d τ during a time dt: Derivation of the Theorem We begin with the differential form of Ampere’s law: NEWTONS THIRD LAW IN ELECTRODYNAMICS AND MAXWELL'S STRESS TENSOR :- FOR THE COMPLETE DERIVATION OF ENERGY CONSERVATION IN ELECTRODYNAMICS AND MAXWELL'S STRESS TENSOR  CLICK HERE Magnetic forces do no (net) wor...

WAVE MOTION AND INTRODUCTION TO ELECTROMAGNETIC WAVES

 IN THE FOLLOWING CONTENT YOU MAY GET INSIGHT INTO THE AMAZING WORLD OF WAVES WHICH WE ARE COMPLETELY SURROUNDED BY. LETS START THE JOURNEY ......       A wave is a disturbance in a medium that carries energy without a net movement of particles. It may take the form of elastic deformation, a variation of pressure, electric or magnetic intensity,  electric potential , or temperature. PROPERTIES OF WAVES:- Transfers energy. Usually involves a periodic, repetitive Movement. Does not result in a net movement of the medium or particles in the medium (mechanical wave).  TYPES OF WAVES:- 1) Mechanical waves Transverse Waves Waves in which the medium moves at right angles to the direction of the wave. Examples of transverse waves: Water waves (ripples of gravity waves, not sound through water) Light waves S-wave earthquake waves Stringed instruments Torsion wave The high point of a transverse wave is a crest. The low part is a trough. Longi...