What does microscopy, electron, scanning mean?
Definitions for microscopy, electron, scanning
mi·croscopy, elec·tron, scan·ning
This dictionary definitions page includes all the possible meanings, example usage and translations of the word microscopy, electron, scanning.
Wikipedia
microscopy, electron, scanning
A scanning electron microscope (SEM) is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons. The electrons interact with atoms in the sample, producing various signals that contain information about the surface topography and composition of the sample. The electron beam is scanned in a raster scan pattern, and the position of the beam is combined with the intensity of the detected signal to produce an image. In the most common SEM mode, secondary electrons emitted by atoms excited by the electron beam are detected using a secondary electron detector (Everhart–Thornley detector). The number of secondary electrons that can be detected, and thus the signal intensity, depends, among other things, on specimen topography. Some SEMs can achieve resolutions better than 1 nanometer. Specimens are observed in high vacuum in a conventional SEM, or in low vacuum or wet conditions in a variable pressure or environmental SEM, and at a wide range of cryogenic or elevated temperatures with specialized instruments.
U.S. National Library of Medicine
Microscopy, Electron, Scanning
Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY.
Numerology
Chaldean Numerology
The numerical value of microscopy, electron, scanning in Chaldean Numerology is: 9
Pythagorean Numerology
The numerical value of microscopy, electron, scanning in Pythagorean Numerology is: 3
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"microscopy, electron, scanning." Definitions.net. STANDS4 LLC, 2024. Web. 27 Jul 2024. <https://www.definitions.net/definition/microscopy%2C+electron%2C+scanning>.
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