Pakistan study notes for Matric, Intermediate, B.A, B.COM BSC, M.A, BCS. Free Pakistani Urdu educational school, colleges and University notes.

Production And Uses Of Ultrasonic

ULTRASOUNICS

The longitudinal waves with frequencies above the audible range are known as of ULTRASONICS.

 

Ultrasonic have frequency greater than 20,000Hz.

Production of Ultrasonic:

Ultrasonic are produced by vibrating quartz crystals electricity. With the help of this device very high frequency range ultrasonic waves can easily be produced.

 

Uses of Ultrasonic

• IN MEDICINE

=> Ultrasonic is now widely used as diagnostic therapeutic and surgical tool in medicine.

=> Ultrasonic is preferred over x-rays due to safety.

=> To kill microbes in liquids.

•  IN INDUSTRY

=> To find cracks in metal structures.

 

• IN TECHNOLOGY

=> They are used in echo-depth sounding devices for determining depth of sea.

=> In under water navigation ultrasonic is used instead of RADAR

• IN GENERAL

=> In guidance devices for blind persons.

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