| 1. | Ford is looking at infrared technology, which sends out an ultrasonic wave.
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| 2. | If an vibrating membrane will produce ultrasonic waves in the medium of interest.
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| 3. | These screens detect the absorption of ultrasonic waves at the point of touch.
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| 4. | The pressure gradient in an ultrasonic wave moves particles relative to the fluid.
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| 5. | In this way, it works as a receiver of ultrasonic waves.
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| 6. | Ultrasonic waves can be produced by the Piezo-electric effect and magnetostriction.
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| 7. | An ultrasonic wave is a sound wave having a frequency greater than 20 kHz.
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| 8. | The acousto-optic effect is extensively used in the measurement and study of ultrasonic waves.
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| 9. | Nobody knows the real long-term effects of ultrasonic waves.
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| 10. | The generated ultrasonic waves are detected by ultrasonic transducers and then analyzed to produce images.
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