6.3.3 Applications of Sound Wave

Sonar


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

Disintegration of Kidney Stone

High intensity ultrasound wave is used to break kidney stone in a patient's body.

Ultrasound Scanning

  1. Ultrasound is used for the scanning of foetus in thge womb.
  2. Ultrasound is used in ultrasonography for visualizing body structures including tendons, muscles, joints, vessels and internal organs.


Cleaning

Jewelers use ultrasound to clean rings and watches.