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ultrasonic    音标拼音: [,ʌltrəs'ɑnɪk]

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  • Ultrasonics | Physics, Sound Waves Applications | Britannica
    ultrasonics, vibrations of frequencies greater than the upper limit of the audible range for humans—that is, greater than about 20 kilohertz The term sonic is applied to ultrasound waves of very high amplitudes Hypersound, sometimes called praetersound or microsound, is sound waves of frequencies greater than 10 13 hertz
  • Ultrasonics | Journal | ScienceDirect. com by Elsevier
    Ultrasonics is the only internationally established journal which covers the entire spectrum of ultrasound research, technology and applications Ultrasonics contains a variety of sections to keep its readers abreast of the state of the art in both fundamental investigation and real-world development related to ultrasonics
  • ULTRASONIC Definition Meaning - Merriam-Webster
    The meaning of ULTRASONIC is having a frequency above the human ear's audibility limit of about 20,000 hertz —used of waves and vibrations How to use ultrasonic in a sentence Did you know?
  • What is Ultrasonic Sensor : Working Its Applications - WatElectronics. com
    Ultrasonic sensors are electronic devices that calculate the target’s distance by emission of ultrasonic sound waves and convert those waves into electrical signals The speed of emitted ultrasonic waves traveling speed is faster than the audible sound
  • 1 Basic Principles of Ultrasound - 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
  • Ultrasonic Sound - HyperPhysics
    Ultrasonic Sound The term "ultrasonic" applied to sound refers to anything above the frequencies of audible sound, and nominally includes anything over 20,000 Hz Frequencies used for medical diagnostic ultrasound scans extend to 10 MHz and beyond
  • How does ultrasound work? | Uses of ultrasound - Explain that Stuff
    Since scientists discovered ultrasound, they have found all kinds of important uses for it, from medical diagnosis to materials testing and scientific research Let's take a closer look at ultrasound and how it works Photo: A mobile ultrasound scanner, similar to a laptop computer Photo by Shannon Yount courtesy of US Marine Corps and DVIDS
  • Ultrasound - National Institute of Biomedical Imaging and Bioengineering
    Medical ultrasound falls into two distinct categories: diagnostic and therapeutic Diagnostic ultrasound is a non-invasive diagnostic technique used to image inside the body
  • Ultrasound vs Ultrasonic: Difference and Comparison
    Ultrasound is used to describe a medical imaging technique that uses high-frequency sound waves to produce images of internal organs and tissues Ultrasonic is a term which means the use of high-frequency sound waves in applications such as cleaning, measuring distance, and detecting objects
  • Ultrasonic Sensors: What Are They How Do They Work?
    Ultrasonic sensors are devices that measure the distance of objects using sound waves The basis of this technology, developed in the 1960s, is based on the principle of reflection of sound waves Thanks to its ability to make fast and precise measurements, it is widely used in automotive, industry and security fields





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