This book is primarily for newcomers to sciences, technology, engineering, and medicine interested in the field of electromagnetic radiation’s non-laser and laser sources and their applications. The book concisely discusses the sources’ emission mechanisms, fabrication, generated radiation properties, and limitations. The classification of laser sources is emission mechanism-based, unlike the traditional classification of solids, liquids, and gases. Also, this book clears a few misconceptions about laser description from earlier books. It emphasizes the research and commercial applications of lasers; non-laser techniques are not included. The applications where non-laser methods are included discuss lasers’ advantages and disadvantages. The repetition of some basic concepts in the book is intentional to provide sufficient background for a new idea.
Thomas Hill Green’s work on ‘the common good’ provides the means to evaluate the conduct of political establishments. One of the most important contributions to political philosophy by any English philosopher, it continues to fuel lively debate today.
