electron microscope

electron microscope
electron microscope n an electron-optical instrument in which a beam of electrons is used to produce an enlarged image of a minute object
electron microscopist n
electron microscopy n

* * *

a microscope that uses a beam of electrons as a radiation source for viewing the specimen. The resolving power (ability to register fine detail) is a thousand times greater than that of an ordinary light microscope. The specimen must be examined in a vacuum, which necessitates special techniques for preparing it, and the electrons are usually focused onto a fluorescent screen (for direct viewing) or onto a photographic plate (for a photograph, or electron micrograph). A transmission electron microscope is used to examine thin sections at high magnification. A scanning electron microscope reveals the surfaces of objects at various magnifications; its great depth of focus is advantageous.

* * *

a microscope in which an electron beam, instead of light, forms an image for viewing, allowing much greater magnification and resolution. The image may be viewed on a fluorescent screen or may be photographed. Types include the scanning and the transmission electron microscope.

Medical dictionary. 2011.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • 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 microscope — ► NOUN ▪ a microscope with high magnification and resolution, employing electron beams in place of light …   English terms dictionary

  • electron microscope — electron microscope. См. электронный микроскоп. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • electron microscope —  Electron Microscope  Электронный микроскоп   Микроскоп, позволяющий получать сильно увеличенное изображение объектов, используя рассеяние электронов. В отличие от оптического микроскопа, в электронном микроскопе используют потоки электронов и… …   Толковый англо-русский словарь по нанотехнологии. - М.

  • Electron microscope — Diagram of a transmission electron microscope A 197 …   Wikipedia

  • electron microscope — noun a microscope that is similar in purpose to a light microscope but achieves much greater resolving power by using a parallel beam of electrons to illuminate the object instead of a beam of light • Hypernyms: ↑microscope • Hyponyms: ↑field… …   Useful english dictionary

  • electron microscope — a microscope that uses a beam of electrons as a radiation source for viewing the specimen. The resolving power (ability to register fine detail) is a thousand times greater than that of an ordinary light microscope. The specimen must be examined… …   The new mediacal dictionary

  • electron microscope — UK / US noun [countable] Word forms electron microscope : singular electron microscope plural electron microscopes science a very powerful microscope that uses waves of electrons instead of light …   English dictionary

  • electron microscope — Abbreviation: EM A microscope that uses an electron beam focussed by magnetic lenses . See: scanning electron microscope …   Glossary of Biotechnology

  • electron microscope — elektroninis mikroskopas statusas T sritis fizika atitikmenys: angl. electron microscope; electronic microscope vok. Elektronenmikroskop, n rus. электронный микроскоп, m pranc. microscope électronique, m …   Fizikos terminų žodynas

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”