In the scanning electron microscope a beam of electrons

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• Scanning electron microscope — These pollen grains taken on an SEM show the characteristic depth of field of SEM micrographs …   Wikipedia

• scanning electron microscope — n an electron microscope in which a beam of focused electrons moves across the object with the secondary electrons produced by the object and the electrons scattered by the object being collected to form a three dimensional image on a cathode ray …   Medical dictionary

• scanning electron microscope — n. a type of electron microscope in which a moving electron beam is used to scan an object causing it to emit secondary electrons which form a pattern that produces a three dimensional image on the screen of a cathode ray tube …   English World dictionary

• scanning electron microscope — noun : an electron microscope in which a beam of focused electrons moves across the object with the secondary electrons produced by the object and the electrons scattered by the object being collected to form a three dimensional image on a… …   Useful english dictionary

• scanning electron microscope — noun Date: 1953 an electron microscope in which a beam of focused electrons moves across the object with the secondary electrons produced by the object and the electrons scattered by the object being collected to form a three dimensional image on …   New Collegiate Dictionary

• scanning electron microscope — (SEM) An electron microscope that scans a beam of electrons over the surface of a specimen and forms an image of the surface from the electrons that are emitted by it …   Dictionary of microbiology

• scanning electron microscope — noun an electron microscope in which the surface of a specimen is scanned by a beam of electrons that are reflected to form an image …   English new terms dictionary

• scanning electron microscope — a device in which the specimen is examined point by point directly in a moving electron beam, and electrons reflected by the specimen are used to form a magnified, three dimensional image on a television screen. Abbr.: SEM [1950 55] * * * …   Universalium

• Environmental scanning electron microscope — Wool fibers imaged in an ESEM by the use of two symmetrical plastic scintillating backscattered electron detectors …   Wikipedia

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

• Scanning Electron Microscopy — Microscopie électronique à balayage Pour les articles homonymes, voir MEB, SEM et Microscope. Microscope électronique à balayage JEOL JSM 6340F …   Wikipédia en Français