Sonar to Quartz Clock examines how the unapplied phenomenon of piezoelectricity became applied for technologies such as sonar, crystal frequency control, the quartz clock, and how its research has consequently changed during WWI and the interwar period. It aims at reconstructing, for the first time, the fascinating history of the inventions and the development of these highly important technologies, which are still in extensive use, and which were crucial for the electronic revolution, arguably the most important technological developments of the twentieth century. On this basis, this book suggests a better and more nuanced understanding of the relationships between modern science and technology and the process of development and innovation of science-based technologies. It examines in particular the mutual transfer and transformation of knowledge between them including the way physics becomes practically applicable, the way applications and societal interests shape technology and science, and the differences and similarities between scientific and technological research. The book presents an in-depth analysis of the scientific and technological research and development in the field, and of the evolution of their experimental, theoretical, and technical aspects within their social military and commercial contexts. It offers an integrative history of science and technology, needed to better comprehend their interactions and evolution but rare in current historiography. This book will appeal to historians of science and technology, sociologists of science and generally scientists and engineers studying or working with piezoelectricity, ultrasound devices, and crystal frequency control.