Photoacoustic spectroscopy is the measurement of the effect of absorbed electromagnetic energy (particularly of light) on matter by means of acoustic detection.

The German Type 212 submarine uses a new development of the water ram expulsion system, which ejects the torpedo with water pressure to avoid acoustic detection.

Scaling of mechanical heart valves for cavitation inception: observation and acoustic detection.

Visby is designed to elude visual detection, radar detection, acoustic detection, and infrared detection.

After the war, acoustic detection was seen as a tool that could assist fisheries biologists to sample stock sizes.

Therefore the traditional acoustic technologies are extended and may eventually cloak certain objects from acoustic detection.

They would rely purely on Venturers hydrophone (a common, long-used, and far less sophisticated underwater acoustic detection device) to try to detect U-864.

The visual and acoustic detection had a short range and would not give interceptor enough time to climb to altitude before the bombers were already on their targets.

He specialized in acoustic detection and ranging and worked as a troubleshooter on several atomic projects, his family said.

The incident, however, implied that Russian attack submarines are capable of avoiding passive acoustic detection, at least under certain conditions.