Electromagnetic Waves (Student Physics Series)

Beschreibung:

Electromagnetism began in the nineteenth century when Faraday showed electricity and magnetism were not distinct, separate phenomena, but interacted when there were time-varying electric or magnetic fields. In Electricity and Magnetism I have shown from first principles how Faraday's experiments led finally to Maxwell's four equations, which with the electromagnetic-force law summarise the whole of classical electromagnetism. This book therefore begins with Maxwell's equations and then uses them to study the propagation and generation of electromagnetic waves. Physics is a subject in which the more advanced the treatment of a topic, the deeper the understanding of common occurrences that is revealed. In studying the solutions of Maxwell's equations you will find answers to such questions as: What is an electro magnetic wave? Why does a radio wave travel through space at the speed of light? How is a radio wave generated? Why does light pass through a straight tunnel when a radio wave does not? How does light travel down a curved glass fibre? It is a remarkable fact that the classical laws of electromagnetism are fully consistent with Einstein's special theory of relativity and this is discussed in Chapter 2. The following four chapters provide solutions of Maxwell's equations for the propagation of electro magnetic waves in free space, in dielectrics, across interfaces and in conductors respectively. The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged. Bestandsnummer des Verkäufers GOR004688538

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Inhaltsangabe:

Reseña del editor: In this volume Professor Dobbs shows how Maxwell's equations of electromagnetism lead to an understanding of the generation and propagation of electromagnetic waves. Beginning with a discussion of Maxwell's equations in space and in magnetisable, polarisable media, the relationship between classical electromagnetism and special relativity is then developed and applied to simple examples of moving charges. Then properties of electromagnetic waves in space are derived from Maxwell's equations, and Fresnel's equations for reflection and refraction at plane boundaries are obtained. The author goes on to discuss propagation in dielectrics and conductors, absorption processes, the generation of electromagnetic waves by antennas and dipoles and the mechanisms of classical scattering. The text concludes with a study of microwaves in waveguides and resonant cavities, and the failure of classical theory to explain the thermal properties of radiation. The book is well illustrated with diagrams throughout and there are worked examples and exercises (with answers) for the student. This book should be of interest to second year undergraduate students taking courses in physics, applied physics, electronics and electrical engineering.