During the second half of the eighteenth century, the scientific study of electric and magnetic forces began as two separate sciences. To make the calculation of forces easier, the ideas of electric and magnetic fields were established as separate constructions. However, it became evident that electric and magnetic fields are connected and that they are highly important physical notions with Oersted's discovery in 1819 that an electric current causes a magnetic field and Faraday's discovery in 1831 that a changing magnetic field induces currents. Maxwell combined electricity and magnetism into a single theory, electromagnetism, in 1873, using four fundamental equations. The presence of electromagnetic waves that propagate at the speed of light was a key prediction of this theory. This prediction was confirmed experimentally by Hertz in 1887. 
       
The electromagnetic field, which is an amalgamation of electric and magnetic fields, is a genuine physical substance with energy, momentum, and angular momentum that can be static or propagate as waves in the same way that sound does.

This book is for students in their third year of a Bachelor degree programme in engineering. Students are presumed to have completed one semester of engineering electromagnetics, with Vol. 1 as the textbook. However, the themes and sequence of topics in Vol. 1 are not required, and in any case, this book could be beneficial as a supplementary reference when another textbook is used. The principles of electric circuits and linear systems, which are often taught in the second year of a degree programme, are considered to be acquainted to readers. Readers are also expected to be familiar with basic engineering mathematics, such as complex numbers, trigonometry, vectors, partial differential equations, and multivariate calculus.