The book deeply explores phase shift, which is the time delay between the transmitted wave and the received wave. This delay allows the machine to distinguish between a rusty iron nail and a silver coin. 2. Pulse Induction (PI)
"Inside The Metal Detector" by George Overton and Carl Moreland is not light beach reading. It is dense, technical, and occasionally demanding of the reader. However, for those willing to push past the introductory chapters, it offers something rare: Inside The Metal Detector George Overton Carl Moreland.pdf