TERMIUM Plus^®

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Technicians from Kodak... will test the entire telescope optics at the Plum Brook Space Power Facility at the NASA Glenn Research Center near Sandusky, Ohio.... This huge chamber—36 m high, 30 m wide—has been used to test the deployment of large space systems and the Mars Pathfinder airbag landing system. It offers low vibration levels, and, when it is outfitted with liquid helium shrouds, it will simulate the thermal environment at the L2 operating location of JWST.  2, fiche 1, Anglais, - liquid%20helium%20shroud

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The transient calorimetric technique typically consists of a pure Aluminum block (or A1100 Aluminum as a good substitute) coated with a typical spacecraft coating and suspended via the manganin temperature sensor leads in a black painted liquid helium shroud.  3, fiche 1, Anglais, - liquid%20helium%20shroud

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La France a de plus pris une part capitale dans la réalisation des unités de focalisation, en concevant les quadripôles supraconducteurs principaux du LHC [Large Hadron Collider] et leur assemblage dans leurs masses froides. Les 392 aimants quadripôles, désormais tous dans le tunnel, garantiront la focalisation des faisceaux, c'est-à-dire la maîtrise de leur dimension millimétrique tout au long de leur trajectoire. Ces aimants sont insérés dans des enceintes à hélium liquide avec des aimants correcteurs ainsi que bien d'autres composants. Cet assemblage complexe, appelé masse froide, est lui-même entouré par un cryostat et un module d'asservissement. Le tout forme ce que l'on appelle une section droite courte.  2, fiche 1, Français, - enceinte%20%C3%A0%20h%C3%A9lium%20liquide

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Fiber optics depend on pulses of light, transmitted through fine transparent fibers, rather than on pulses of electric current sent through conducting wires. The purpose is to transmit information rather than power. By proper modulation of the light signals, a very wide information bandwidth can be achieved, and because the fibers can be made thin, a large bundle can be accommodated in a single cable of comparatively small diameter. The signals are not vulnerable to eavesdropping, nor are they susceptible to jamming or to transmission of damaging currents due to an electromagnetic pulse from a nuclear explosion. Fiber optics are replacing electric wires for many applications, including computer links.  1, fiche 2, Anglais, - fibre%20optics

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Système optique utilisant des fibres optiques.  2, fiche 2, Français, - optique%20de%20fibres

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Profilometry is a rapid mechanical gauging technique developed at Kodak to measure the profile of large high quality optics during grinding operations.  1, fiche 3, Anglais, - grinding

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Opération consistant à user la surface de la glace brute jusqu'à ce que tous les défauts aient disparu.  1, fiche 3, Français, - doucissage

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[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, fiche 4, Anglais, - corrective%20mirror

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[...] 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, fiche 4, Anglais, - corrective%20mirror

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[Télescope orbital Hubble] Il possède un miroir correcteur qui compense les défauts du miroir primaire.  3, fiche 4, Français, - miroir%20correcteur

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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, fiche 4, Français, - miroir%20correcteur

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The FIR features a large user-configurable volume for experiments. The volume resembles a laboratory optics bench. An experiment can be built up on the bench from components, or it can be built up on the bench from components, or it can be attached as a self-contained package, or a combination. The FIR provides data acquisition and control, sensor interfaces, laser and white light sources, advanced imaging capabilities, power, cooling, and other resources.  2, fiche 6, Anglais, - fluids%20integrated%20rack

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The powered racks are called the Fluids Integrated Rack (FIR), Combustion Integrated Rack (CIR), and Shared Accommodations Rack (SAR). The combustion and fluids disciplines share racks and mutually necessary hardware within FCF to dramatically reduce cost and effectively use ISS resources.  2, fiche 6, Anglais, - fluids%20integrated%20rack

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fluids integrated rack; FIR: term and abbreviation officially approved by the International Space Station official approval Group.  3, fiche 6, Anglais, - fluids%20integrated%20rack

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bâti intégré pour fluides; FIR : terme et abréviation uniformisés par le Groupe d'uniformisation de la terminologie de la Station spatiale internationale.  1, fiche 6, Français, - b%C3%A2ti%20int%C3%A9gr%C3%A9%20pour%20fluides

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The beam optics of the arc bending magnet system required correction and the final focus system, with its large demagnification was improved.  2, fiche 7, Anglais, - arc%2Dbending%20magnet

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Le faisceau X blanc, généré par un aimant de courbure dans le premier cas, par le wiggler dans le second, arrive sur un monochromateur équipé de deux cristaux.  1, fiche 7, Français, - aimant%20de%20courbure%20du%20faisceau

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A tool used to fabricate large laser resonator optics with the precision required for advanced high power devices.  2, fiche 8, Anglais, - large%20optics%20diamond%20truning%20machine

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Cassegrain optics were employed because a large lead angle was required.  1, fiche 9, Anglais, - Cassegrain%20optics

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(...) a rapid mechanical gauging technique developed at Kodak to measure the profile of large high quality optics during grinding operations.  1, fiche 12, Anglais, - profilometry

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