What are ultrasound and ultrasonic waves?
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Ultrasonics, vibrations of frequencies greater than the upper limit of the audible range for humans—that is, greater than about 20 kilohertz
Ultrasound, also called ultrasonography, in medicine, the use of high-frequency sound(ultrasonic) waves to produce images of structures within the human body.
Ultrasound, also called ultrasonography, in medicine, the use of high-frequency sound(ultrasonic) waves to produce images of structures within the human body.
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which sound is greater than 2000 Hz is call ultrasound.
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