This book on Principles of Physics is intended to serve fundamental college courses in scientific curricula. Physics is one of the most important tools to aid undergraduates, graduates, and researchers in their technical felds of study. Without it many phenomena cannot be described, studied, or understood. The topics covered here will help students interpret such phenomena, ultimately allowing them to advance in the applied aspects of their felds. The goal of this text is to present many key concepts in a clear and concise, yet interesting way, making use of practical examples and attractively colored illustrations whenever appropriate to satisfy the needs of today’s science and engineering students. Some of the examples, proofs, and subsec...