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Output of a computer model of underwater acoustic propagation in a simplified ocean environment. A seafloor map produced by multibeam sonar. Underwater acoustics (also known as hydroacoustics) is the study of the propagation of sound in water and the interaction of the mechanical waves that constitute sound with the water, its contents and its boundaries.
During World War II, he continued to develop sonar systems that could detect submarines, mines, and torpedoes. He published Fundamentals of Sonar in 1957 as chief research consultant at the US Navy Underwater Sound Laboratory. He held this position until 1959 when he became technical director, a position he held until mandatory retirement in 1963.
A hydrophone (Ancient Greek: ὕδωρ + φωνή, lit. 'water + sound') is a microphone designed for underwater use, for recording or listening to underwater sound. Most hydrophones contains a piezoelectric transducer that generates an electric potential when subjected to a pressure change, such as a sound wave.
Submarine signaling was made obsolescent and overtaken by advances during World War II. In 1946 the Submarine Signal Company was acquired by and merged with Raytheon , becoming Raytheon's Marine Division, after having become the national leader in underwater sound, sonar and other work with the Navy during the World Wars and branching into ...
A History of Music in the U.S. Armed Forces During World War II. Philadelphia: M. W. Lads, 1966. OCLC 2296000; Henderson, Hamish. Ballads of World War II. Glasgow: Privately printed by the Lili Marleen Club of Glasgow, 1950. OCLC 465530802; I'll Be Seeing You ..: Songs of World War II. Essex, England: EMI Music Pub, 1988. ISBN 0-86175-042-X ...
The LOFARgram representation of acoustics in black, gray and white with an operator trained and adapted to interpreting that display was the critical link in the system. Experienced operators that could detect subtle differences and with practice could detect faint signatures of targets were vital to detection.
The technology of anechoic tiles was developed by the Kriegsmarine during the Second World War, codenamed Alberich after the invisible guardian dwarf of the Rhinegold treasure from Richard Wagner's Der Ring des Nibelungen music dramas. The coating consisted of sheets approximately 1 m (3 ft 3 in) square and 4 mm (0.16 in) thick, with rows of ...
This technology proved to be useful for the naval conflicts during World War II by providing a method for ships to accurately report their position without use of radio, or to find crashed planes and ships. During the war, the primary model of sofar bomb used by the United States was the Mk-22. [4]