TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 OBS

Founded in 1997, the Canadian Laser and Aesthetic Specialists Society(CLASS) is a non-profit medical society incorporated under the federal laws of Canada. CLASS is dedicated to excellence in cosmetic laser surgery and active in the dissemination of information, education, preceptorship and the promotion of quality in all forms of aesthetic laser surgery. CLASS was founded on the principle that the pursuit of excellence is best achieved by collaboration between medical specialties.  1, record 1, English, - Canadian%20Laser%20and%20Aesthetic%20Specialists%20Society

Record 1,  Textual support,  French

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

The Doppler lidar (DL) is an active remote sensing instrument that provides range- and time- resolved measurements of radial velocity and attenuated backscatter.  1, record 2, English, - Doppler%20lidar

Record number: 2, Textual support number: 1 OBS

lidar : A system for detecting the presence of objects or ascertaining their position or motion which works on the principle of radar, but uses laser radiation instead of microwaves.  2, record 2, English, - Doppler%20lidar

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

Le lidar Doppler mesure uniquement la composante du vent projetée sur l'axe de visée (vitesse radiale).  2, record 2, French, - lidar%20Doppler

Record number: 2, Textual support number: 1 OBS

lidar : système ou appareil de détection qui émet un faisceau laser et en reçoit l'écho, permettant de déterminer la distance d'un objet.  3, record 2, French, - lidar%20Doppler

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 OBS

A scanning lidar that emits a pulse of laser light ... into the atmosphere and utilizes Raman scattering in order to measure three return wavelengths, including backscatter due to elastic ... nitrogen ... and water ... signals.  2, record 3, English, - Raman%20lidar

Record number: 3, Textual support number: 2 OBS

lidar : A system for detecting the presence of objects or ascertaining their position or motion which works on the principle of radar, but uses laser radiation instead of microwaves.  3, record 3, English, - Raman%20lidar

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Le lidar Rayleigh mesure simplement l'intensité de l'onde rétrodiffusée [...] Le lidar Raman mesure aussi l'intensité de l'onde rétrodiffusée, mais cette fois par diffusion Raman.  2, record 3, French, - lidar%20Raman

Record number: 3, Textual support number: 1 OBS

lidar : système ou appareil de détection qui émet un faisceau laser et en reçoit l'écho, permettant de déterminer la distance d'un objet.  3, record 3, French, - lidar%20Raman

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 OBS

lidar : A system for detecting the presence of objects or ascertaining their position or motion which works on the principle of radar, but uses laser radiation instead of microwaves.  2, record 4, English, - Mie%20lidar

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

[...] un lidar Mie ne peut mesurer ni la température de l’air, ni sa densité.  1, record 4, French, - lidar%20Mie

Record number: 4, Textual support number: 2 CONT

[...] à précision de mesure égale, le lidar Rayleigh nécessite environ 100 000 fois plus de signal qu’un lidar Mie.  1, record 4, French, - lidar%20Mie

Record number: 4, Textual support number: 1 OBS

lidar : système ou appareil de détection qui émet un faisceau laser et en reçoit l'écho, permettant de déterminer la distance d'un objet.  2, record 4, French, - lidar%20Mie

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

Distributed Temperature Sensing uses the principle of Optical Time Domain Reflectometry(OTDR) and works by sending a pulse of laser light down an optical fibre and measuring the changes in the properties of the reflected light. It provides much more information than discrete sensors.  1, record 5, English, - optical%20time%20domain%20reflectometry

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 DEF

Méthode d'évaluation des fibres optiques.  1, record 5, French, - m%C3%A9thode%20de%20r%C3%A9trodiffusion

Record number: 5, Textual support number: 1 OBS

On introduit une impulsion lumineuse à une extrémité de la fibre puis, on evalue le temps que met le flux énergique ainsi créé à réfléchir vers cette même extrémité.  1, record 5, French, - m%C3%A9thode%20de%20r%C3%A9trodiffusion

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 DEF

An instrument combining a pulsed laser transmitter and optical receiver (usually a telescope) with an electronic signal processing unit used for the detection and ranging of various distant targets in the atmosphere, analogous to the principles of operation of microwave radar.  6, record 6, English, - lidar

Record number: 6, Textual support number: 1 CONT

The lidar technique operates on the same principle as radar; in fact, it is sometimes called laser radar. The principal difference between lidar and radar is the wavelength of the radiation used. Radar uses wavelengths in the radio band whereas lidar uses light, that is usually generated by lasers in modern lidar systems.  7, record 6, English, - lidar

Record number: 6, Textual support number: 2 CONT

There are three basic generic types of lidar: range finders, DIAL, and Doppler lidars. Rande finder lidars are the simplest lidars. They are used to measure the distance from the lidar instrument to a solid or hard target Differential Absorption Lidar (DIAL) is used to measure chemical concentrations (such as ozone, water vapor, pollutants) in the atmosphere. Doppler lidar is used to measure the velocity of a target High-resolution DEMs with vertical accuracy as good as 10 cm can be created with Lidar. Lidar is also better able to map bare earth elevations in forested or vegetated areas than other methods because only a single laser pulse needs to be able to reach between trees and the ground.  8, record 6, English, - lidar

Record number: 6, Textual support number: 1 OBS

lidar: Coined word for light detection and ranging.  6, record 6, English, - lidar

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 DEF

Combinaison d'un laser et d'un récepteur accolés, destinée à étudier les échos produits par les particules de l'atmosphère sur des ondes visibles ou infrarouges.  5, record 6, French, - lidar

Record number: 6, Textual support number: 1 OBS

La détection se fait par des cellules optiques suivies de photomultiplicateurs.  6, record 6, French, - lidar

Record number: 6, Textual support number: 2 OBS

Le lidar sert également à la localisation et à la poursuite télémétrique d'engins dans le ciel.  7, record 6, French, - lidar

Record number: 6, Textual support number: 3 OBS

lidar : acronyme dérivé du terme anglais «light detection and ranging» qui veut dire «détection et télémétrie par ondes lumineuses».  8, record 6, French, - lidar

Record 6,  Textual support,  Spanish

Record number: 6, Textual support number: 1 DEF

Aparato de detección y localización por ondas luminosas.  1, record 6, Spanish, - lidar

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 DEF

Method for investigating atmospheric behaviour using pulsed light beams (lasers).  7, record 7, English, - light%20detection%20and%20ranging

Record number: 7, Textual support number: 1 CONT

Light detection and ranging(lidar) is a technique in which a beam of light is used to make range-resolved remote measurements. A lidar [instrument] emits a beam of light, that interacts with the medium or object under study. Some of this light is scattered back toward the lidar. The backscattered light captured by the lidar's receiver is used to determine some property or properties of the medium in which the beam propagated or the object that caused the scattering. The lidar technique operates on the same principle as radar; in fact, it is sometimes called laser radar. The principal difference between lidar and radar is the wavelength of the radiation used. Radar uses wavelengths in the radio band whereas lidar uses light, that is usually generated by lasers in modern lidar systems. The wavelength or wavelengths of the light used by a lidar depend on the type of measurements being made and may be anywhere from the infrared through the visible and into the ultraviolet. The different wavelengths used by radar and lidar lead to the very different forms that the actual instruments take. The major scientific use of lidar is for measuring properties of the earth's atmosphere, and the major commercial use of lidar is in aerial surveying and bathymetry(water depth measurement). Lidar is also used extensively in ocean research and has several military applications, including chemical and biological agent detection. Lidar can also be used to locate, identify, and measure the speed of vehicles. Hunters and golfers use lidar-equipped binoculars for range finding.  6, record 7, English, - light%20detection%20and%20ranging

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 DEF

Méthode d'étude du comportement de l'atmosphère à l'aide de faisceaux lumineux pulsés (lasers).  4, record 7, French, - d%C3%A9tection%20et%20t%C3%A9l%C3%A9m%C3%A9trie%20par%20ondes%20lumineuses

Record number: 7, Textual support number: 1 OBS

La détection se fait par des cellules optiques suivies de photomultiplicateurs.  5, record 7, French, - d%C3%A9tection%20et%20t%C3%A9l%C3%A9m%C3%A9trie%20par%20ondes%20lumineuses

Record 7,  Textual support,  Spanish

Record number: 7, Textual support number: 1 DEF

Método para investigar las características atmosféricas usando pulsaciones de haces de luz (láser).  1, record 7, Spanish, - lidar

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 CONT

A laser is a unit that produces a high intensity beam of light. This can be focused i. e. the power density increased, to melt materials. The anilox laser engraver uses this principle but controls the laser and the position of the beam to produce accurately positioned cells. The fine control of the laser allows for screens up to 3475 1/cm and depth down to 4 microns...  2, record 8, English, - anilox%20laser%20engraver

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 DEF

[Appareil servant à la] gravure des cylindres anilox directement à partir de fichiers numériques, à l'aide de têtes laser dont les faisceaux creusent des alvéoles dans une grande précision.  1, record 8, French, - machine%20%C3%A0%20graver%20%C3%A0%20laser

Record number: 8, Textual support number: 1 CONT

En première mondiale au salon drupa 2004, HELL avait dévoilé le prototype d'un graveur au laser qui est le premier au monde à créer directement des alvéoles sur une surface cuivrée ou chromée. Les différentes possibilités de contrôle du laser permettent la création d'alvéoles dont la profondeur et les profils peuvent être largement définis à volonté et indépendamment les unes des autres.  3, record 8, French, - machine%20%C3%A0%20graver%20%C3%A0%20laser

Record number: 8, Textual support number: 1 OBS

machine à graver à laser : terme et définition tirés du Vocabulaire de la flexographie de France Brodeur. Reproduction autorisée par l'Institut des communications graphiques du Québec.  4, record 8, French, - machine%20%C3%A0%20graver%20%C3%A0%20laser

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 CONT

The Sagnac effect ... is understood as a phase shift of one counterpropagating wave with respect to another wave of this mode in a rotating ring interferometer, the shift being directly proportional to the angular velocity of rotation, the area enclosed by the interferometer, and the wave frequency. The Sagnac effect applies to a kinematic effect of the special theory of relativity (STR) and ... ensues from the relativistic law of velocity composition.  2, record 9, English, - rotating%20ring%20interferometer

Record number: 9, Textual support number: 2 CONT

In the present development, the principle of operation of the ring laser gyro will be based on the "Sagnac Effect" rotating ring interferometer.  3, record 9, English, - rotating%20ring%20interferometer

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 CONT

Le but de notre expérience est de mesurer une accélération angulaire. Pour ce faire, un interféromètre à effet Sagnac sera utilisé. Il s'agit d'un dispositif expérimental permettant l'analyse d'une figure d'interférence produite par un faisceau laser. Le faisceau est coupé en deux par un miroir semi-transparent et, à la différence de l'interféromètre de Michelson, le trajet suivi par les rayons est circulaire. Chaque rayon tourne dans un sens différent et donc, selon l'état de rotation du système, le déphasage entre les rayons est sensible à l'accélération angulaire du dispositif. Quand l'interféromètre de Michelson permet de mesurer une accélération linéaire, l'interféromètre à effet Sagnac permet de mesurer une accélération angulaire. Le principe de cet effet correspond à un effet Doppler rotationnel. Il a été découvert par Sagnac en 1913. Cet interféromètre annulaire se résume en deux formules.  1, record 9, French, - interf%C3%A9rom%C3%A8tre%20annulaire

Record number: 9, Textual support number: 2 CONT

Calcul de la différence de marche pour un interféromètre de Sagnac circulaire (lois classiques).  2, record 9, French, - interf%C3%A9rom%C3%A8tre%20annulaire

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 CONT

The basic principle of the OWLS [optical waveguide lightmode spectroscopy] method is that linearly polarized light(He-Ne laser) is coupled by a diffraction grating into the waveguide layer, provided that the incoupling condition is fulfilled. The incoupling is a resonance phenomenon that occurs at a precise angle of incidence, which depends on the refractive indices of the medium covering the surface of the waveguide.  1, record 10, English, - resonance%20phenomenon

Record number: 10, Textual support number: 2 CONT

The CEPES-Laser is a highly effective mutifunctional treatment system. Because of its wide application capability it has for many years been very succesfully applied in human and veterinary medicine... Despite having a low output performance of approx 0,5 mWatt the treatment signals penetrate through the combination with a magnetic field (Schumann and geomagnetic frequency spectrum) into the intracellular environment and generate the necessary physiological resonance phenomen.  3, record 10, English, - resonance%20phenomenon

Record number: 10, Textual support number: 1 OBS

phenomen, -mene. Obs. rare. Anglicized form of phenomenon [= F. phénomène].  4, record 10, English, - resonance%20phenomenon

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 CONT

La possibilité du phénomène laser et d'émission éventuelle d'un rayon laser sont liées aux conditions suivantes : Existence d'un milieu (dans le cas du gyromètre laser, c'est un gaz) possédant au moins trois niveaux d'énergie [...]. Existence d'un procédé, dit de pompage, impliquant un apport d'énergie faisant passer un grand nombre d'électrons du niveau E_{0) au niveau E [indice 2}. Dans le cas des gyromètres laser, le pompage est obtenu par voie électrique [...]. Existence d'un phénomène de résonance correspondant à des ondes lumineuses [...] Dans le cas des gyromètres laser, une cavité résonnante est formée par un ensemble de miroirs de haute qualité.  2, record 10, French, - ph%C3%A9nom%C3%A8ne%20de%20r%C3%A9sonance

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 CONT

A more advanced type of gyro is the optical gyroscope. These devices are based on two counter-rotating beams of light travelling in a ring-like structure. The interaction of the two light beams produces a standing wave pattern. If the ring is then rotated about its centre axis (think of a torus spinning around its core), one of the beams has to travel a slightly longer distance, and the other a slightly shorter distance to get back to where they started. This will cause a shift in the pattern of the standing wave, and this can be measured to determine the rate of rotation.  3, record 11, English, - optical%20gyro

Record number: 11, Textual support number: 2 CONT

Most people would remember the classic rotating disc gyroscope, which belongs to the mechanical group. One of today's high precision gyros is still the mechanical, rotating gyro; however it is dependent on linear accelerations because of its mechanical measuring principle. The optical group comprises the fibre optic-and laser types. These use the Sagnac Effect(named after its French discoverer), which, when the sensor is turned, results in a difference in transit time between two light waves passing through the same optical path but in opposite directions. Optical gyros therefore do not depend on acceleration as gyros in the mechanical group. This is one of their biggest advantages...  4, record 11, English, - optical%20gyro

Record 11,  Textual support,  French

Record number: 11, Textual support number: 1 CONT

Réaliser un gyroscope optique d'un prix de revient de quelques centaines de francs. Voilà une prouesse technologique quand on sait que les systèmes actuels, les gyroscopes laser, coûtent entre 100 000 francs et 1 million de francs. La solution mise au point par Mohamed Bouamra, chercheur à l'École nationale supérieure de physique de Strasbourg, tient à une habile substitution de technologies : une simple diode électroluminescente remplace le laser, tandis que des banales fibres optiques multimodes prennent la place des coûteuses fibres monomodes.  2, record 11, French, - gyroscope%20optique

Record number: 11, Textual support number: 2 CONT

[...] certains laboratoires ont étudié divers dispositifs de mesure des rotations absolues ne présentant qu'une analogie assez lointaine avec les gyroscopes classiques. Ce sont les gyroscopes à vibrations [...]; les gyroscopes nucléaires [...]; les gyroscopes optiques, exploitant les propriétés de la lumière cohérente [...]  3, record 11, French, - gyroscope%20optique

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 CONT

In the present development, the principle of operation of the ring laser gyro will be based on the "Sagnac effect" rotating ring interferometer.  1, record 12, English, - Sagnac%20effect%20rotating%20ring%20interferometer

Record number: 12, Textual support number: 1 OBS

The Sagnac effect ... is understood as a phase shift of one counterpropagating wave with respect to another wave of this mode in a rotating ring interferometer, the shift being directly proportional to the angular velocity of rotation, the area enclosed by the interferometer, and the wave frequency. The Sagnac effect applies to a kinematic effect of the special theory of relativity (STR) and ... ensues from the relativistic law of velocity composition.  2, record 12, English, - Sagnac%20effect%20rotating%20ring%20interferometer

Record 12,  Textual support,  French

Record number: 12, Textual support number: 1 CONT

Calcul de la différence de marche pour un interféromètre de Sagnac circulaire (lois classiques).  1, record 12, French, - interf%C3%A9rom%C3%A8tre%20de%20Sagnac%20circulaire

Record number: 12, Textual support number: 1 OBS

Le but de notre expérience est de mesurer une accélération angulaire. Pour ce faire, un interféromètre à effet Sagnac sera utilisé. Il s'agit d'un dispositif expérimental permettant l'analyse d'une figure d'interférence produite par un faisceau laser. Le faisceau est coupé en deux par un miroir semi-transparent et, à la différence de l'interféromètre de Michelson, le trajet suivi par les rayons est circulaire. Chaque rayon tourne dans un sens différent et donc, selon l'état de rotation du système, le déphasage entre les rayons est sensible à l'accélération angulaire du dispositif. Quand l'interféromètre de Michelson permet de mesurer une accélération linéaire, l'interféromètre à effet Sagnac permet de mesurer une accélération angulaire. Le principe de cet effet correspond à un effet Doppler rotationnel. Il a été découvert par Sagnac en 1913. Cet interféromètre annulaire se résume en deux formules.  3, record 12, French, - interf%C3%A9rom%C3%A8tre%20de%20Sagnac%20circulaire

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  French

Record 13,  Textual support,  Spanish