TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

A virtual retinal display(VRD) utilizes photon generation and manipulation to create a virtual image that is projected directly onto the retina of the eye without creating a real or an aerial image that is viewed via a real screen, mirror or optics. The user sees what appears to be a display floating in space in front of them.  3, record 1, English, - virtual%20retinal%20display

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

[Technologie de réalité virtuelle] qui permet de projeter des images directement sur la rétine [...]  1, record 1, French, - affichage%20r%C3%A9tinien%20virtuel

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

A catadioptric telescope is an optical system that is optimized for producing images of objects at an infinite distance, and which incorporates both refractive type optics(lenses) and reflective optics(mirrors). The use of both mirror and lens optics produces certain advantages in performance as well as in the manufacturing process.  3, record 2, English, - catadioptric%20telescope

Record 2,  Textual support,  French

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Le télescope catadioptrique est un mélange entre le télescope réflecteur et la lunette astronomique (ou télescope réfracteur). Il se compose donc de miroirs et de lentilles.  2, record 2, French, - t%C3%A9lescope%20catadioptrique

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

[Hubble Space Telescope’s wide-field planetary camera] That camera now will be fitted with the corrective mirrors as well. The mirrors act, in effect, like high-tech eyeglasses. In each pair, the first corrective mirror passes an image of the Hubble’s 94.5 inch-diameter primary mirror onto a second mirror. The second glass is formed like the Hubble’s mirror, only in exact reverse, thus canceling the flaw.  1, record 3, English, - corrective%20mirror

Record number: 3, Textual support number: 2 CONT

[...] The bigger telescope generates a brighter image but atmospheric disturbances make ground based telescopes any larger than current instruments impractical unless adaptive optics are installed [...] A large parabolic corrector mirror will be required to adjust for spherical aberration.  2, record 3, English, - corrective%20mirror

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

[Télescope orbital Hubble] Il possède un miroir correcteur qui compense les défauts du miroir primaire.  3, record 3, French, - miroir%20correcteur

Record number: 3, Textual support number: 2 CONT

Les systèmes de correction sont, en principe, très puissants. Ils devraient permettre aux télescopes à miroir liquide d'observer une vaste portion du ciel visible [...] nous testons aujourd'hui de nouvelles adaptations des miroirs correctifs.  2, record 3, French, - miroir%20correcteur

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

A non-rotating liquid mirror based on GRIN(gradient index) optics has been proposed by Borra... It consists of a stationary container having a thin layer of mercury covered with a transparent liquid in which one introduces a radial dependence of the index of refraction. It focuses light like a mirror but has the chromatic aberrations of a lens.  1, record 4, English, - non%2Drotating%20liquid%20mirror

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

Nous pouvons distinguer deux types de télescopes à miroir liquide : le miroir liquide en rotation et celui au repos. Le miroir liquide au repos est en fait une masse de liquide avec un gradient d'indice radial.  1, record 4, French, - miroir%20liquide%20au%20repos

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

Liquid GRIN mirror : A new type of non-rotating liquid mirror based on GRIN(gradient index) optics has been proposed by Borra. The mirror consists of a stationary container having a thin layer of mercury covered with a transparent liquid in which one introduces a radial dependence of the index of refraction.  1, record 5, English, - liquid%20GRIN%20mirror

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

Le principe de fonctionnement du miroir liquide à gradient d'indice de réfraction, ou miroir à GRIN liquide (gradient d'indice), consiste à superposer une lentille convergente à un miroir plan afin de focaliser la lumière. Ceci équivaut à utiliser un miroir convergent.  1, record 5, French, - miroir%20%C3%A0%20GRIN%20liquide

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 DEF

A laser scanning microscopy system that focuses on a single plane of light through a biological substance, allowing high-resolution, three-dimensional images to be built up.  4, record 6, English, - confocal%20laser%20scanning%20microscopy

Record number: 6, Textual support number: 1 CONT

Laser Scanning Confocal Microscopy(LSCM, also referred to as CSLM, Confocal Scanning Laser Microscopy) is now established as a valuable tool for obtaining high resolution images and 3-D reconstructions of a variety of biological specimens. In LSCM, a laser light beam is expanded to make optimal use of the optics in the objective. Through a x-y deflection mechanism this beam is turned into a scanning beam, focussed to a small spot by an objective lens onto a fluorescent specimen. The mixture of reflected light and emitted fluorescent light is captured by the same objective and(after conversion into a static beam by the x-y scanner device) is focused onto a photodetector(photomultiplier) via a dichroic mirror(beam splitter). The reflected light is deviated by the dichroic mirror while the emitted fluorescent light passes through in the direction of the photomultiplier. A confocal aperture(pinhole) is placed in front of the photodetector, such that the fluorescent light(not the reflected light!) from points on the specimen that are not within the focal plane(the so called out-of-focus light) where the laser beam was focussed will be largly obstructed by the pinhole. In this way, out-of-focus information(both above and below the focal plane) is greatly reduced.  2, record 6, English, - confocal%20laser%20scanning%20microscopy

Record 6,  Textual support,  French

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Principe de la microscopie confocale à balayage laser (MCBL). Le rayon laser excitateur pénètre dans l'échantillon préalablement marqué par des fluorochromes [...], auparavant répertoriés et choisis en fonction de leurs propriétés à se fixer sur des molécules particulières d'une structure ou d'un objet d'intérêt. Lors de l'impact optique, il y a émission de rayons lumineux provenant de différents plans de la préparation. Grâce à un diaphragme variable («trou d'aiguille» - pinhole), il est possible de sélectionner les rayons émis par un seul plan de préparation et d'éliminer le signal provenant d'autres plans. Les rayons réfléchis sont filtrés en fonction de leur longueurs d'onde puis détectés par des photo-multiplicateurs. Le signal reçu est enfin converti en signal numérique, contribuant à la création d'une image [...]  2, record 6, French, - microscopie%20confocale%20%C3%A0%20balayage%20laser

Record number: 6, Textual support number: 1 OBS

Tous les champs d'application de la microscopie confocale à balayage laser : localisations intracellulaires par fluorescence (simple et double marquage), reconstitution 3D par fluorescence de structures cellulaires, hybridation in situ, cinétique de processus dans les cellules vivantes, états de surface de matériaux divers.  3, record 6, French, - microscopie%20confocale%20%C3%A0%20balayage%20laser

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

German piano finishers and others used this technique for final polishing. Take sulfuric acid and add it to water (1 part to 10 parts water). ... Sprinkle Vienna chalk (a nasty feeling and smelling fine grit compound) on the work piece. Pour some of the acid solution into the palm of the hand and rub the solution and chalk onto your workpiece creating a paste, which when dried can be wiped off.  2, record 7, English, - Vienna%20chalk

Record number: 7, Textual support number: 2 CONT

Cleaning of Optics. This includes the output window and rear mirror.... Polishing with Vienna chalk.... Do not use Vienna chalk with coated optics. To use Vienna chalk, lay down some tissues and put about half a teaspoon of the powder on the tissues. Add a few drops of water or alcohol and mix to form a slurry. Place the face to be cleaned on the slurry and polish with a gentle circular motion.  3, record 7, English, - Vienna%20chalk

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 CONT

Dans le finissage des métaux, notre Calcinella [marque de commerce], connue aussi comme «chaux de Vienne», est absolument irremplaçable : elle produit une boue légèrement abrasive et très dense qui garantit l'ablation de toutes imperfections dans le polissage des billes des paliers à roulement.  2, record 7, French, - chaux%20de%20Vienne

Record number: 7, Textual support number: 2 CONT

Pour les instruments argentés mats ... il faut utiliser de la chaux de Vienne mélangée avec de l'alcool à brûler, en faire une pâte un peu claire.  3, record 7, French, - chaux%20de%20Vienne

Record number: 7, Textual support number: 3 CONT

Poudres de polissage. [...] Magnésie, oxyde de magnésium carbonisé. [...] Chaux de Vienne.  4, record 7, French, - chaux%20de%20Vienne

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 OBS

The helical aperture facsimile transmitter is fairly common on low-to mid-volume fax units. The original is roller fed over a flatbed copy platen and illuminated by an area lamp. Lens and mirror optics reflect and focus one scan line of the moving document at a time, first through a fixed horizontal slit aperture, and then through a rotating helical aperture. The rotating of the helical aperture produces one lateral scan of the original per revolution, with the passing light being focused a final time onto a photocell for conversion to an electrical signal.  1, record 8, English, - rotating%20helical%20aperture%20scanner

Record 8,  Textual support,  French

Record 8,  Textual support,  Spanish