Have you ever wondered how stealth planes achieve "invisibility," how sunken ships are found, or how fishermen track schools of fish in vast expanses of ocean? Radar and sonar echolocation—a simple matter of sending, receiving, and processing signals.

Weaving history with simple science, Mark Denny deftly reveals the world of radar and sonar to the curious reader, technology buff, and expert alike. He begins with an early history of the Chain Home radar system used during World War II and then provides accessible and engaging explanations of the physics that make signal processing possible. Basic diagrams and formulas show how electromagnetic and sound waves are transmitted, received, and converted into images, allowing you to literally see in the dark.

A section on bioacoustic echolocation, with a focus on the superior sonar systems of bats and whales and a discussion of the advanced technology of next-generation airborne signal processors, opens the imagination to fascinating possibilities for the future.

Mark Denny is a theoretical physicist who has worked in academia and industry. He is the author of numerous books, including Lights On! The Science of Power Generation, Making Sense of Weather and Climate: The Science behind the Forecasts, and Making the Most of the Anthropocene: Facing the Future.

Mark Denny's profile page

"This is an impressive, enjoyable and unique book... The style is light and entertaining, without in any way trivializing the subject or appearing patronizing, and Blip, Ping, and Buzz achieves the rather special trick of being valuable both to the non-specialist and to the seasoned practitioner."

Physics World

"The writing style is clear and sometimes whimsical, making for easy reading... An excellent addition to the ever-popular genre of books about how things work."

Australian Physics

"Denny largely sheds the complexity of mathematical constructs, distilling their most salient features into a more qualitative understanding of radar and sonar systems."

"Indeed, Denny's writing is anything but dry and boring. He adeptly explains complex subject matter and does so with relatively simple language and minimal use of symbolic notation."

Bat Research News

"This well written book... is highly recommended for just about everyone including, dare I say it, experts."

International Journal of Acoustics and Vibration