Acoustic delay lines— A survey of types and uses

Abstract In each issue this year there will be an article on ultrasonic delay lines. This introductory paper will be followed by articles on solid delay lines and the piezoelectric transducers for them; wire, tape and photoelastic lines; and v.h.f. lines. Applications of each type will be described but the accent will be on principles. If necessary further papers will be added to cover particularly important uses more fully