Ultrasound Quick Project
Ultrasounds are sound waves with frequency beyond the human limits, therefore humans are unable to hear them. It even travels at exactly the same speed as sound in any medium. Humans can hear sound within the frequency range of about 20 to 20,000 Hz, so any sound above 20 kHz is ultrasound. Ultrasound or ultrasonography is a medical imaging technique that uses high frequency sound waves and their echoes. The technique is similar to the echolocation used by bats, whales and dolphins, as well as SONAR used by submarines.
Ultrasound has very high frequency vibrations and can be used to clean things. Really dirty teeth can be cleaned superbly in this way. Really delicate mechanisms, such as in antique clocks and watches, can also be safely cleaned.
Ultrasound for scanning is the most popular medical use. This is safer than using X-rays. Unborn babies can be seen by moving an ultrasonic transmitter across the mother's stomach. The sound waves will be......
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