Introduction to Classical Electrodynamics।।(part-1)।।Inverse Square Law।।Electricity and Magnetism।।
This is the first part of Classical Electrodynamics.. But before that we should have some clear concepts about some topics.. Today we will do that... First we need to learn some Mathematical Concept, 1. Inverse Square Law :- This is a symmetry we often find in the Newtonian Gravitational Equation, Coulomb's law of Electrostatic force etc.. Carl Frederick Gauss was the first to explain the symmetry.. Carl Fredrick Gauss According to Gauss, If any source of Force or Energy exists in a three-dimensional space, then we can simply say that Where ∮ is closed surface integral, F ⃗ is force vector ds ⃗ is infinitesimally small area vector.. which basically means that Force or Energy from the source evenly permeates through 3-dimensional space ... so, we can conclude that ( F∝1 / 4πR² ) or ( F∝1 / R² ).. actually Newton's formula of gravitation is F = ((k / 4πR²)...