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Science glossary film: Ultrasound

Ultrasound

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Sound with a frequency above the normal range of human hearing, or 20,000 hertz.

Sound with a frequency above the normal range of human hearing, or 20,000 hertz. Ultrasound has many uses in medicine and industry, such as imaging the inside of the human body, and detecting cracks and defects in solid structures. In nature, bats, dolphins and some other animals use ultrasound to navigate and to communicate.

Ultrasound has many uses in medicine and industry, such as imaging the inside of the human body, and detecting cracks and defects in solid structures. In nature, bats, dolphins and some other animals use ultrasound to navigate and to communicate.

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