A refreshingly rich and encompassing perspective of our world, this examination demonstrates how, of the four forces of physical nature, it is electromagnetic force that activates nature as well as our bodies and brains. Arguing that electromagnetism plays an indispensable role in virtually all of modern technology, this book conveys how deeply embedded and intimately linked human beings are to earthly nature. Using lucid, understandable terms, it explains the electromagnetic workings of some of the core devices of modern technology—such as the transistor and radar—and shares a number of engaging vignettes about its discoverers and well as anecdotes drawn from the author's own experience.