electron focus

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• 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 …   Medical dictionary

• Electron User — was a magazine targeted at owners of the Acorn Electron microcomputer. It was published by Database Publications of Stockport, starting in October 1983 and ending after 82 issues in July 1990.Initially it was included as a 16 page pullout… …   Wikipedia

• Electron beam tomography — (EBT) is a specific form of computed axial tomography (CAT or CT) in which the X ray tube is not mechanically spun in order to rotate the source of X ray photons. This different design was explicitly developed to better image heart structures… …   Wikipedia

• electron lens — n. a configuration of electric or magnetic fields, or a combination of both, that serves to focus or deflect an electron beam, as in an electron microscope …   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 microscope — Diagram of a transmission electron microscope A 197 …   Wikipedia

• Electron gun — An electron gun (also called electron emitter) is an electrical component that produces an electron beam that has a precise kinetic energy and is most often used in televisions and monitors which use cathode ray tube technology, as well as in… …   Wikipedia

• 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

• focus — [[t]fo͟ʊsaɪ[/t]] ♦♦ focuses, focusing, focused (The spellings focusses, focussing, focussed are also used. The plural of the noun can be either foci or focuses.) 1) V ERG If you focus on a particular topic or if your attention is focused on it,… …   English dictionary

• Focus stacking — Traduction à relire Focus stacking → Focus s …   Wikipédia en Français

• electron gun — Electronics, Television. a device consisting of the cathode ray tube, which emits electrons, and a surrounding electrostatic or electromagnetic apparatus, which controls, focuses, and accelerates the stream of electrons (electron beam). Also… …   Universalium