The force of electromagnetism turns out to be a blueprint for all the other forces. However, there is also a second theme that runs through this lecture notes on electromagnetism. The purpose of this electromagnetism lecture notes is to introduce the Maxwell equations and to extract some of the many stories they contain. There are few places in physics, or indeed in any other subject, where such a richly diverse set of phenomena flows from so little. These are known as the Maxwell equations.
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Rather remarkably, a full description of the force of electromagnetism is contained in four simple and elegant equations. It is the force that gives rise to light itself. Harnessing these powers through the invention of the electric dynamo and motor has transformed the planet and our lives on it.Īs if this wasn’t enough, there is much more to the force of electromagnetism for it is, quite literally, responsible for everything you’ve ever seen. In the case of electricity, this means everything from rubbing a balloon on your head and sticking it on the wall, through to the fact that you can plug any appliance into the wall and be pretty confident that it will work.įor magnetism, this means everything from the shopping list stuck to your fridge door, through to trains in Japan which levitate above the rail. It is the force that binds atoms together into solids and liquids.Īnd it is the force which is responsible for the incredible range of properties that different materials exhibit.Īt the macroscopic scale, electromagnetism manifests itself in the familiar phenomena that give the force its name. It is the force that underlies the periodic table of elements, giving rise to all of chemistry and, through this, much of biology. For everything in between, it is the force of electromagnetism that rules.Īt the atomic scale, electromagnetism (admittedly in conjunction with some basic quantum effects) governs the interactions between atoms and molecules.At the very smallest distances, the two nuclear forces hold sway.At the very largest scales, those of planets or stars or galaxies - the force of gravity dominates.There are, to the best of our knowledge, four forces at play in the Universe. The book also assume you have a knowledge of vector calculus.
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You can download the book from the link given in this article.Įlectromagnetism Lecture Notes assume you are familiar with Newtonian mechanics and special relativity. These are compiled by David Tong, Department of Applied Mathematics and Theoretical Physics, University of Cambridge. The electromagnetism lecture notes is a book to provide an introduction to Electromagnetism for Electrical and Electronics Engineers.
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