what is ultra sound?write its source .writes its properties and its application
please give answer briefly in 150-250 words
Answers
Answer:
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Answer:
The sound wave with the frequency above 20,000 Hz
Explanation:
Objects to be cleansed are put in a cleaning solution and ultrasonic sound waves are passed through that solution. The high frequency of these ultrasonic waves detaches the dirt from the objects.
In ultrasonic welding of plastics, high frequency (15 kHz to 40 kHz ) low amplitude vibration is used to create heat by way of friction between the materials to be joined. The interface of the two parts is specially designed to concentrate the energy for maximum weld strength