history> An early storage device that used tensioned wires of nickel alloy carrying longitudinal waves produced and detected electromagnetically. They had better storage behaviour than href="module.php?name=Lexikon&file=search&eid=1&query=mercury delay lines">mercury delay lines. [h. Epstein and O.B. Stram, "A high Performance Magnetostriction-Sonic Delay Line," Transactions, Institute of Radio Engineers, Professional Group on Ultrasonic Engineering, 1957, pp. 1-24]. (2002-11-08)