Photons Tell The Tale

Focusing on the evolution of land surveying technology, the book chronicles the journey from traditional measurement techniques to the introduction of electronic distance meters in 1951 by Erik Bergstrand. It highlights the significant research in applied electronics and wave propagation that led to innovations like the maser, facilitating the development of microwave-based measurement devices by Harry Baumann and T. L. Wadley. The narrative also emphasizes how advancements in transistors and integrated circuits revolutionized electronic distance measuring, making it more accessible and efficient.