Applications of Sound Wave

Q & A

Explain how sonar is used to measure the depth of a sea. for visualizing subcutaneous body structures including tendons, muscles, joints, vessels and internal organs for possible pathology or lesions.

1. In the sonar system, the broadcasting equipment emits ultrasonic pulses.
2. The pulses are reflected back from the base of the sea or object in the sea and create an echo.
3. The echo is traced by a hydrophone.
4. The time interval t between transmitting the pulses and receiving them again is recorded by electronic equipment.
5. If the ultrasonic velocity is v, then depth of the sea d is given by d = ½ vt