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ultrasonic    音标拼音: [,ʌltrəs'ɑnɪk]

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  • Ultrasound - Wikipedia
    An ultrasonic examination Ultrasound is sound with frequencies greater than 20 kilohertz [1] This frequency is the approximate upper audible limit of human hearing in healthy young adults The physical principles of acoustic waves apply to any frequency range, including ultrasound Ultrasonic devices operate with frequencies from 20 kHz up to several gigahertz Ultrasound is used in many
  • Ultrasonics | Physics, Sound Waves Applications | Britannica
    An ultrasonic transducer is a device used to convert some other type of energy into an ultrasonic vibration There are several basic types, classified by the energy source and by the medium into which the waves are being generated
  • Ultrasonics | Journal | ScienceDirect. com by Elsevier
    We are delighted to announce a forthcoming special issue of Ultrasonics, dedicated to the rapidly evolving field of "Ultrasonic-assisted Microfluidics and Streaming”
  • Basic Principles of Ultrasound – Ultrasound Physics and its . . . - PALNI
    Define ultrasound and describe its characteristics as a form of energy Explain the principles of sound wave propagation, including frequency, wavelength, amplitude, and velocity Describe the piezoelectric effect and how it is used in ultrasound transducers
  • 9 Unexpected Things You Can Clean with an Ultrasonic Cleaner
    An ultrasonic cleaner cleans with high-frequency sound waves that create microscopic bubbles The bubbles pop and release dirt and oils from all kinds of items that can be both difficult and frustrating to clean
  • What Are Ultrasonic Waves and How Do They Work?
    Ultrasonic waves consist of sound energy that is too high-pitched for us to perceive This inaudible energy is now a powerful tool used across medicine, industry, and daily life, allowing us to see inside the human body or test the structural integrity of a bridge
  • ULTRASONIC Definition Meaning - Merriam-Webster
    Ultrasound, or ultrasonography, works on the principle that sound is reflected at different speeds by tissues or substances of different densities Ultrasound technology has been used medically since the 1940s
  • Infrasonic, Subsonic, Supersonic, Hypersonic and Ultrasonic Waves . . .
    Infrasonic and ultrasonic waves describe sounds outside the human hearing range, with unique applications in environmental monitoring and medical imaging, respectively
  • Exploring Ultrasonic Waves: Properties and Uses
    Ultrasonic waves are sound waves with frequencies above the upper limit of human hearing, typically above 20 kHz These waves propagate through different media such as liquids, gases, and solids
  • How Ultrasonic Technology Works and Its Many Uses
    Ultrasonic technology refers to sound waves with frequencies too high for humans to hear The accepted range of human hearing is from 20 Hertz (Hz) to 20 kilohertz (kHz), and any sound with a frequency above this is considered ultrasonic





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