resonance


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resonance

 [rez´o-nans]
1. the prolongation and intensification of sound produced by transmission of its vibrations to a cavity, especially such a sound elicited by percussion. Decrease of resonance is called dullness; its increase, flatness.
2. a vocal sound heard on auscultation.
amphoric resonance a sound resembling that produced by blowing over the mouth of an empty bottle.
nuclear magnetic resonance see nuclear magnetic resonance.
skodaic resonance increased percussion resonance at the upper part of the chest, with flatness below it; heard over a large pleural effusion or area of consolidation.
tympanic resonance tympanitic resonance (def. 2).
tympanitic resonance
1. the peculiar sound elicited by percussing a tympanitic abdomen.
2. the drumlike reverberation of a cavity full of air; called also tympanic resonance.
vocal resonance (VR) the sound of ordinary speech as heard through the chest wall.

res·o·nance

(rez'ō-nănts),
1. In chemistry, the manner in which electrons or electric charges are distributed among the atoms in compounds that are planar and symmetric, particularly those with conjugated (alternating) double bonds; the existence of resonance in the latter case reduces the energy content and increases the stability of compounds; such molecular entities have more than one contriubuting structure, each differing only in the distribution of electrons.
2. Sympathetic or forced vibration of air in the cavities above, below, in front of, or behind a source of sound; in speech, modification of the quality (for example, harmonics) of a tone by the passage of air through the chambers of the nose, pharynx, and head, without increasing the intensity of the sound.
3. The sound obtained on percussion of a part that can vibrate freely.
4. The intensification and hollow character of the voice sound obtained on auscultation over a cavity.
5. The natural or inherent frequency of any oscillating system.
6. Synonym(s): resonant frequency
[L. resonantia, echo, fr. re-sono, to resound, to echo]

resonance

(rĕz′ə-nəns)
n.
1.
a. Intensification and prolongation of sound, especially of a musical tone, produced by sympathetic vibration.
b. Intensification of vocal tones during articulation, as by the air cavities of the mouth and nasal passages.
c. Medicine The sound produced by diagnostic percussion of the normal chest.
2. Physics The increase in amplitude of oscillation of an electric or mechanical system exposed to a periodic force whose frequency is equal or very close to the natural undamped frequency of the system.

resonance

An MRI term for a large-amplitude vibration in a mechanical or electrical system caused by a relatively small periodic stimulus with a frequency at or close to the system’s natural frequency. Resonance is also defined as the exchange of energy at a particular frequency between two systems.

res·o·nance

(rez'ŏ-năns)
1. Sympathetic or forced vibration of air in the cavities above, below, in front of, or behind a source of sound; in speech, modification of the quality (e.g., tone) of a sound by the passage of air through the chambers of the nose, pharynx, and head, without increasing the intensity of the sound.
2. The sound obtained on percussion of a part that can vibrate freely.
3. The intensification and hollow character of the voice sound obtained on auscultation over a cavity.
4. chemistry The manner in which electrons or electric charges are distributed among the atoms in compounds that are planar and symmetric, particularly those with conjugated (alternating) double bonds; the existence of resonance in the latter case reduces the energy content and increases the stability of a compound.
5. The natural or inherent frequency of any oscillating system.
6. Synonym(s): resonant frequency.
[L. resonantia, echo, fr. re-sono, to resound, to echo]

res·o·nance

(rez'ŏ-năns)
1. In chemistry, the manner in which electrons or electric charges are distributed among the atoms in compounds.
2. Sympathetic or forced vibration of air in cavities above, below, in front of, or behind a source of sound.
3. Sound obtained on percussion of a body part.
4. Intensification and hollow character of voice sound obtained on auscultation over a cavity.
[L. resonantia, echo, fr. re-sono, to resound, to echo]

Patient discussion about resonance

Q. who much cost the resonance magnetic machine? new or used

A. here is a company that you can even get a MRI scanner in a leasing program:
http://www.nationwideimaging.com/index.php

More discussions about resonance
References in periodicals archive ?
In this paper, we propose to extract gear fault torsional vibration signature in resonance region.
Section 2 derives the explicit equations of Fourier spectrum, envelope spectrum, and the Fourier spectrum of instantaneous frequency in the resonance frequency region, respectively.
This article investigates the effect of the vibration properties of a resonance board on the piano's timbre after the vibration properties of the resonance board and the timbre of the piano are measured.
It was acomparative cross-sectional study carried out at Cardiac Magnetic resonance imaging department of AFIC and NIHD.
One of the major contributions of the Brand Resonance Pyramid in comparison with Keller's original CBBE (consumer based brand equity) Model is the inclusion of the brand overhang block o the pyramids' base.
[C.sub.eff] could vary in a large number for local resonance and plays a major role in the circuit.
Across the starless skies and the darkness far beyond the reach of the familiar, I thought of the Schumann Resonance. I shook my hands a little, thinking it might cause a ripple.
* The second resonance of the vocal tract ([F.sub.2]) typically begins just above the treble clef (at about [G.sub.5]) and extends to about [C.sub.7], which is in the spectral tone color territory of /[??] a a ae [??] e i/.
The optimal design goal, with respect to engine vibration, is to avoid any structural resonance within normal engine speed operating range.
Both structures (DR and GP slot) are coupled and a minor change in either structure parameter also affects the other resonance. However, as a first-order approximation, both structures are treated independently.
In gas detection, several publications have shown that the resonance frequency of MC decreased due to exposure of the gas, such as mercury [6], volatile organic compounds [7], ethanol [8], carbon dioxide [9], freon [10], and water vapor [11].
Mechanical resonance is one of the most common problems designers face when trying to maximize either command response or dynamic stiffness [7].