ultrasonic


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ultrasonic

 [ul″trah-son´ik]
beyond the audible range; relating to sound waves having a frequency of more than 20,000 Hz.

ul·tra·son·ic

(ŭl'tră-son'ik),
Relating to energy waves similar to those of sound but of higher frequencies (above 20,000 Hz).
[ultra- + L. sonus, sound]

ultrasonic

/ul·tra·son·ic/ (-son´ik) beyond the upper limit of perception by the human ear; relating to sound waves having a frequency of more than 20,000 Hz.

ultrasonic

(ŭl′trə-sŏn′ĭk)
adj.
1. Of or relating to acoustic frequencies above the range audible to the human ear, or above approximately 20,000 hertz.
2. Of, relating to, or involving ultrasound.

ul′tra·son′i·cal·ly adv.

ultrasonic

[ul′trəson′ik]
Etymology: L, ultra, beyond + sonus, sound
pertaining to ultrasound, or sound frequencies so high (greater than 20 kHz) that they cannot be perceived by the human ear.

ultrasonic

adjective Referring to an electromagnetic frequency faster than sound waves–eg, ≥ 30,000 Hz

ul·tra·son·ic

(ŭl'tră-son'ik)
Relating to energy waves similar to those of sound but of higher frequencies (above 30,000 Hz).
[ultra- + L. sonus, sound]

ultrasonic

Pertaining to sound waves above the upper limit of audibility, that is above about 20,000 Hz.

ultrasonic

high-frequency, inaudible sound energy waves (>30 000 Hz) above range of normal hearing

ul·tra·son·ic

(ŭl'tră-son'ik)
Relating to energy waves similar to those of sound but of higher frequencies (above 20,000 Hz).
[ultra- + L. sonus, sound]

ultrasonic (ul´trəson´ik),

adj pertaining to sound frequencies so high (greater than 20 kHz) they cannot be perceived by the human ear.
ultrasonic cleaner,
n an electronic generator that transmits high-energy and high-frequency vibrations to a fluid-filled container used to remove particulate matter from dental instruments and appliances.

ultrasonic

beyond the audible range; relating to sound waves having a frequency of more than 20,000 cycles per second.

ultrasonic cleaning
surgical instruments can be thoroughly cleaned by the use of ultrasonic waves which cause the formation of minute gas bubbles which, when they collapse, form shock waves.
ultrasonic heating
the use of ultrasound for producing localized hyperthermia.
ultrasonic pregnancy diagnosis
ultrasonic probe
used to disintegrate masses internally, e.g. the optic lens.
ultrasonic tooth scaling
the use of vibrations to remove supragingival calculus. See ultrasonic scaler.
References in periodicals archive ?
Since then, Chase Machine and Engineering has built ultrasonic laminators, embossers, slitters, cut to lengths and splicing equipment ranging from nine to 144 inches wide.
If you have been looking around for ultrasonic cleaning units for any period of time, you will have a lot of different figures thrown at you regarding power.
Figure 2 shows the gel fraction (a) and crosslink density (b) of the decrosslinked XHDPE obtained by ultrasonic TSE as a function of the ultrasonic amplitude at flow rates of 3.
Pedro Umbelino in Hackaday: "An ultrasonic beacon is an inaudible sound with encoded data that can be used by a listening device to receive information on just about anything.
This previous research revealed that more than one third of the new graduates were less prepared in the use of ultrasonic technology than they were with hand instrumentation.
Dental biofilm and free-flowing planktonic bacteria were established as the cause of periodontal infection; the infection could be treated effectively with the ultrasonic unit set on low power to remove bacteria and calculus.
When the propagating elastic wave is an ultrasonic longitudinal wave, the deformation in the elastic medium can be defined as u = (x, t), v =0, and w = 0.
CSLFC Ultrasonic Flow Meters are available with optional 3-wire RTD, 100 Ohm, Platinum, Class A, IEC60751 temperature sensors for temperature and energy monitoring applications.
Mass loss in the control and ultrasonic groups with different powers and durations are shown in Figure 1.
Therefore the objective of this research was to investigate the influence of the temperature on the characteristics of the propagation of shear ultrasonic waves after mode conversion in the waveguide.
The purpose of this test is to investigate the enhancement of remediation of diesel fuel contaminated sandy soil using ultrasonic waves considering the ultrasonic power, soil particle size, soil density, water flow rate, and duration of ultrasonic waves application.
In many ways, the ultrasonic flow meter market is a market of dichotomies.