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electron-tube instrument

См. также в других словарях:

  • tube — [ tyb ] n. m. • 1611; « voûte » mot région. (Nord) 1453; lat. tubus 1 ♦ Appareil de forme cylindrique, ou conduit à section circulaire, généralement rigide (verre, quartz, plastique, métal), ouvert à une extrémité ou aux deux. Calibre d un tube.… …   Encyclopédie Universelle

  • tube — [to͞ob, tyo͞ob] n. [Fr < L tubus, a pipe] 1. a) a hollow cylinder or pipe of metal, glass, rubber, etc., usually long in proportion to its diameter, used for conveying fluids, etc. b) an instrument, part, organ, etc. resembling a tube… …   English World dictionary

  • electron telescope — noun : an electron optical instrument that penetrates obstacles to vision (as fog, smoke, darkness, or distance) by means of infrared rays, the image being focused on a photosensitive cathode that in turn produces the final enlarged electron… …   Useful english dictionary

  • tube — noun Etymology: French, from Latin tubus; akin to Latin tuba trumpet Date: 1651 1. any of various usually cylindrical structures or devices: as a. a hollow elongated cylinder; especially one to convey fluids b. a soft tubular container whose… …   New Collegiate Dictionary

  • electron microscope — n. an instrument that focuses a beam of electrons on an object, using electric or magnetic fields, to form an enlarged image of the object on a fluorescent screen, photographic plate, or cathode ray tube; specif., such an instrument in which the… …   English World dictionary

  • electron telescope — n. an instrument using a cathode ray tube to form a visible image of infrared rays brought into focus from a distant object by optical lenses …   English World dictionary

  • Electron — For other uses, see Electron (disambiguation). Electron Experiments with a Crookes tube first demonstrated the particle nature of electrons. In this illustration, the profile of the cross shaped target is projected against the tube face at right… …   Wikipedia

  • Électron — Traduction à relire Electron → …   Wikipédia en Français

  • Tube cathodique — Photo du tube cathodique se trouvant à l’intérieur d’un téléviseur …   Wikipédia en Français

  • Tube — A long hollow cylinder. There are many tube like structures in the human body, such as the auditory tube (Eustachian tube) in the ear. * * * 1. A hollow cylindrical structure or canal. 2. A hollow cylinder or pipe. SYN: tuba [TA]. [L. tubus]… …   Medical dictionary

  • Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …   Wikipedia

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