TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

AMPLITUDE RESONANCE [10 records]

Record 1 2017-01-13

English

Subject field(s)
  • Applications of Electronics
  • Measuring Instruments (Engineering)
  • Navigation Instruments
CONT

CVGs [Coriolis vibrating gyroscope] have three features in common : a mechanical resonator, an oscillator and a force-displacement sensor. One mode of the resonator is maintained in resonance by an oscillator loop while oscillations are induced in a second vibration mode. The amplitude of the oscillations gives a signal proportional to the input angular rate. A wide variety of resonators, actuation and sensing schemes are possible. The simplest resonator is a tuning fork.

CONT

... the following characteristics can be those of a rate gyro designed to measure a rate of turn up to 100 DEG per second. The mechanical resonator comprises four beams each having a cross-section of 6 mm by 6 mm, and each 30-35 mm long. The piezo-electric elements are constituted by pellets of PZT having a thickness of a few tenths of a millimeter, metal-coated on both faces, and bonded to the beams.

French

Domaine(s)
  • Applications de l'électronique
  • Instruments de mesure (Ingénierie)
  • Instruments de navigation
CONT

En gyroscopie mécanique [...] on sait que le plan d'oscillation d'un pendule (on parlera plus loin d'un résonateur mécanique), ou l'axe d'une toupie en rotation rapide ont la propriété de conserver une direction fixe dans l'espace inertiel. [...] Mais, l'inertialité parfaite du pendule de Foucault est liée à la simplicité du résonateur et aux particularités de sa mise en œuvre. Aussi, dans les résonateurs mécaniques utilisés pour la fabrication des gyroscopes, la vibration mécanique est partiellement entraînée lors de la rotation du support mécanique.

Spanish

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Record 2 2016-11-29

English

Subject field(s)
  • Physics
DEF

The curve of frequency dependence of the amplitude of a damped system subjected to forced vibrations near the resonance frequency.

OBS

resonance curve: term and definition standardized by ISO.

French

Domaine(s)
  • Physique
DEF

Courbe de la dépendance de la fréquence de l'amplitude d'un système amorti soumis à des oscillations entretenues près de la fréquence de résonance.

OBS

courbe de résonance : terme et définition normalisés par l'ISO.

Spanish

Campo(s) temático(s)
  • Física
DEF

Curva de la dependencia de la frecuencia de la amplitud de un sistema amortiguado sometido a vibraciones forzadas cerca de la frecuencia de resonancia.

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Record 3 2014-06-16

English

Subject field(s)
  • Scientific Instruments
  • Optics
CONT

Laser force microscope senses topography by moving a tungsten or silicon probe across a sample(typically a microelectronic component) at a height of a few nanometers. The tip is set vibrating at close to its resonance frequency. Attractive forces... called van der Waals attractions and the surface tension of water that condenses between tip and sample, pull on the tip, changing its resonance frequency and so reducing its vibration amplitude. The variation in the forces, and hence in tip travel, reveals surface relief. A laser probe tracks the tip by means of a beam that is split into two. One of the beams is reflected through a stationary prism; the other passes through a Bragg cell--a device that shifts the beam's frequency--and is reflected from the back of the probe. The beams are recombined, and their interference produces a signal(at the Bragg-cell frequency) that measures the tip vibration.

PHR

Scanning laser force microscope.

French

Domaine(s)
  • Instruments scientifiques
  • Optique

Spanish

Campo(s) temático(s)
  • Instrumentos científicos
  • Óptica
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Record 4 2013-12-20

English

Subject field(s)
  • Symptoms (Medicine)
CONT

The amplitude of diaphragmatic excursion can be measured accurately on either side by marking, with a skin pencil, the exact lower limit of pulmonary resonance posteriorly and laterally in full expiration, and in full inspiration with the breath held momentarily. The distance between the two parallel lines drawn on the chest marks the amplitude of diaphragmatic movement.

French

Domaine(s)
  • Symptômes (Médecine)
CONT

L'examen radiologique comprend l'examen radioscopique dynamique et la comparaison de deux clichés, l'un pris en inspiration forcée, l'autre en expiration forcée. Il donne deux renseignements : le degré d'obscurcissement à l'expiration profonde et l'amplitude de la course diaphragmatique. Celle-ci s'apprécie de face. Elle est normalement de l'ordre de 7 cm.

OBS

Les Français utilisent la radiologie pour mesurer la course diaphragmatique alors que les Canadiens, eux, l'apprécient en clinique.

Spanish

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Record 5 2013-05-03

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Physics
  • Plastic Materials
DEF

The difference in frequencies measured at amplitudes AR and A... of the resonance curve, where AR is the resonance amplitude.

OBS

half-width of the resonance curve: term standardized by the International Organization for Standardization (ISO).

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Physique
  • Matières plastiques
DEF

Différence en fréquences mesurées aux amplitudes AR et A [...] de la courbe de résonance, où AR est l'amplitude de résonance.

OBS

demi-largeur de la courbe de résonance : terme normalisé par l'Organisation internationale de normalisation (ISO).

Spanish

Campo(s) temático(s)
  • Medición y análisis (Ciencias)
  • Física
  • Materiales plásticos
DEF

Diferencia en frecuencias medidas en las amplitudes AR y A [...] de la curva de resonancia donde AR es la amplitud de resonancia.

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Record 6 2013-05-01

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Strength of Materials
  • Physics of Solids
  • Plastic Materials
DEF

A technique for performing dynamic mechanical measurements in which the specimen is deformed, released and allowed to oscillate freely at the system’s natural resonant frequency.

OBS

The storage modulus is calculated from the natural resonance frequency, and the loss modulus, from the rate of decay of amplitude of oscillation.

OBS

free vibration measurement: term and definition standardized by the International Organization for Standardization (ISO).

Key term(s)
  • measurement of free vibration
  • measure of free vibration

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Résistance des matériaux
  • Physique des solides
  • Matières plastiques
DEF

Technique consistant à effectuer des mesures mécaniques dynamiques sur une éprouvette déformée puis libérée, afin qu'elle oscille à sa fréquence propre.

OBS

Le module de conservation peut être calculé à partir de la fréquence propre et le module de pertes, à partir de l'amortissement des oscillations.

OBS

mesure d'oscillation libre : terme et définition normalisés par l'Organisation internationale de normalisation (ISO).

Spanish

Campo(s) temático(s)
  • Medición y análisis (Ciencias)
  • Resistencia de los materiales
  • Física de los sólidos
  • Materiales plásticos
DEF

Técnica para realizar mediciones dinámico-mecánicas, en la cual el espécimen se deforma, libera y deja oscilar libremente a su frecuencia natural.

OBS

El módulo de almacenamiento se calcula a partir de la frecuencia natural de resonancia y el módulo de pérdida a partir de la velocidad de amortiguación de la oscilación.

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Record 7 2011-08-11

English

Subject field(s)
  • Scientific Instruments
  • Cytology
CONT

... the magnetic-force microscope(MFM), enables us to look at the actual performance of such heads-the definition, uniformity and strength of the magnetic field they produce. In place of the tungsten or silicon needle, the MFM has a magnetized nickel on probe. When the vibrating probe is brought near a magnetic sample, the tip feels a force that changes its resonance frequency and hence its vibration amplitude. The MFM can trace the magnetic-field pattern emanating from data-recording heads at a resolution of better than 25 nanometers. The device can also study the structure of the magnetic bits that store data on disks and other media, giving insight into both head performance and the quality of the storage medium.

French

Domaine(s)
  • Instruments scientifiques
  • Cytologie

Spanish

Campo(s) temático(s)
  • Instrumentos científicos
  • Citología
CONT

[…] hay varios tipos de SPM [microscopios de exploración de sonda], entre ellos, se encuentra [el] microscopio de fuerza atómica (AFM), el microscopio de efecto de túnel (STM), el microscopio de fuerza magnética (MFM), el microscopio de fuerza de resonancia magnética (MRFM), […]

CONT

En el caso de un microscopio de fuerzas magnéticas (MFM) una punta magnética rastrea la superficie de la muestra magnética interaccionando con el campo de dispersión de ésta […]

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Record 8 2010-12-14

English

Subject field(s)
  • Telegraphy
OBS

amplitude-modulated wave; amplitude modulation(AM) ;amplitude resonance; amplitude spectrograph; amplitude spectrum; amplitude tolerance detector.

French

Domaine(s)
  • Télégraphie
OBS

onde modulée en amplitude; modulation d'amplitude (AM); résonance d'amplitude; spectrographe d'amplitude; spectre d'amplitude; détecteur de la tolérance d'amplitude.

Spanish

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Record 9 2007-04-25

English

Subject field(s)
  • Magnetic Resonance Imaging
DEF

A preselected set of defined RF [radio frequency] and gradient pulses, usually repeated many times during a scan, wherein the time interval between pulses and the amplitude and shape of the gradient waveforms will control NMR [nuclear magnetic resonance] signal reception and affect the characteristics of the MR [magnetic resonance] images.

OBS

Typical pulse sequences: spin echo, gradient echo, TurboSE, Inversion Recovery ...

French

Domaine(s)
  • Imagerie par résonance magnétique
DEF

[...] succession d'impulsions et de temps morts utilisée pour exciter les moments magnétiques des protons [...]

Key term(s)
  • séquence d'impulsion

Spanish

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Record 10 2002-06-12

English

Subject field(s)
  • Meteorology
DEF

Theory(Kelvin, 1885) explaining the relatively large amplitude of the solar semi-diurnal component of the atmospheric tides on the basis of the resonance of a hypothetical natural atmospheric oscillation of the same period.

French

Domaine(s)
  • Météorologie
DEF

Théorie (Kelvin, 1885) expliquant l'amplitude relativement grande de la composante de période d'un demi-jour solaire dans les marées atmosphériques par un phénomène de résonance d'une oscillation atmosphérique naturelle de même période.

Spanish

Campo(s) temático(s)
  • Meteorología
DEF

Teoría (Kelvin, 1885) que explica por qué es relativamente grande la amplitud de la componente solar semidiurna de la marea atmosférica, fundándose en la resonancia de una oscilación atmosférica natural hipotética con el mismo período.

Save record 10

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