They cause particles to vibrate parallel to the direction of wave travel. The vibrations can travel through solids, liquids or gases. When travelling through air, the speed of sound is about 340 m/s.

Sound waves can reflect off surfaces ... This technique is applied in sonar systems used to measure the depth of the seabed and to find shipwrecks, submarines and shoals of fish.

most often sound waves. While a well-known use of this is sonar, ultrasonic sensors can also be put to use to make a radar-like system. This ultrasonic radar project is from [mircemk] who uses a ...

Naval sonar systems work like acoustic floodlights, sending sound waves through ocean waters for tens or even hundreds of miles to disclose large objects in their path. But this activity entails ...

Curious mammals are attracted by sonar device – tech that emits sound waves READ MORE: Watch the moment an orca kills and ...

To make the detection more sensitive, researchers built the phased-array sonar system. This consists of multiple units that can transmit sound waves and those of different frequencies ...

The work environment for ultrasound technicians is diverse. Many are employed in hospitals, where they may collaborate with ...