ultrasonic


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ultrasonic

of, concerned with, or producing waves with the same nature as sound waves but frequencies above audio frequencies

ultrasonic

[¦əl·trə′sän·ik]
(acoustics)
Pertaining to signals, equipment, or phenomena involving frequencies just above the range of human hearing, hence above about 20,000 hertz. Also known as supersonic (deprecated usage).

ultrasonic

Sound waves that are beyond the audible hearing range; typically above 20 kilohertz (20,000 Hz). Ultrasonic techniques are found in medicine, which use ultrasound waves to echo back an image of a fetus or internal organ, as well as to administer therapy to various parts of the body. Contrast with infrasonic. See ultrasonic welding and saser.
References in periodicals archive ?
It was at that point in time we realized that ultrasonic technology offered end users tremendous benefits," says Guy Gil, president, Chase Machine and Engineering.
The size of the tank can determine a lot about what you will require in terms of ultrasonic power and also your heating needs.
Figure 1 shows a schematic of an ultrasonic corotating TSE (a) along with compounding (b) and decrosslinking (c) screws used in experiments.
Daniel Arp, Erwin Quiring, Christian Wressnegger and Konrad Rieck wrote that "A recent practice embeds ultrasonic beacons in audio and tracks them using the microphone of mobile devices.
A previously published study conducted by these authors examined newly graduated dental hygienists' (n = 485; 26% response rate) perceptions of their educational preparation, confidence, and use of ultrasonic instrumentation once in practice using a "new graduate survey" instrument.
25) Ultrasonic scaling was viewed as an adjunct used prior to fine hand scaling.
As we know, the ultrasonic wave is a kind of elastic waves propagating in the medium with higher frequency.
The Clark CSLFC Liquid Ultrasonic Flow Transmitter is an excellent alternative to other flow transmitter technologies, with several clear advantages.
Raw materials were sawed into 21 by 21 by 5-mm samples, put into distilled water, and treated with ultrasonic parameters, as shown in Table 1.
The problem can arise if temperature will change, because ultrasonic velocity in the material depends from the temperature and if the temperature will change, the propagation angle of the mode converted shear wave will change, and that can influence the measurements considerably.
Kim et al's [3] test results indicated sonication can enhance pollutant removal considerably and the degree of enhancement depends on ultrasonic power, soil type, and soil density.
Ultrasonic flow meters were first introduced into commercial markets in Japan by Tokimec in 1963.