Only 30% of this book deals with theory, the rest of it is application of this theory to various situations of different levels of complexity. In each case the reason for the choice of the method is explained, and various doubts which assail the minds of most students have been tackled. The solved examples in the book do not deal with mere substitution of numerical values of formulae. They are aimed at establishing a strong foundation of knowledge.
All the required mathematics has been explained in the first chapter to avoid the need to refer frequently to other books in mathematics. At the end of each chapter a summary of the achievements is given along with comments on the nature of difficulties encountered, and the reader is thereafter prepared for the objectives to be attained in the following chapter. The emphasis throughout the book is on a physical understanding of fields and waves and their characteristics, rather than getting lost in a maze of mathematical manipulations.
This is an introductory textbook intended to give the reader a solid grounding in the subject and to prepare him to deal with more advanced texts. The material has been tested in one-semester courses given by the author in various colleges in Pune.
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