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Image formed by an electron microscope is sharp at the centre and blurred in the edges Why so?
Wiki User
∙ 14y ago
Two reasons. Firstly, charges (electrons in this case) congregate near edges (of the sample) will repel incoming electrons more so than a flat surface. Secondly, electrons hitting an edge are more likely reflected at an off angle away from the return-electron detector, weakening the intensity of the image there.
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Wiki User
∙ 14y ago
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atp
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The scanning electron microscope (SEM) is a type of electron microscope that images the sample surface by scanning it with a high-energy beam of electrons in a raster scan pattern. The electrons interact with the atoms that make up the sample producing signals that contain information about the sample's surface topography, composition and other properties.
What is the formula of the ion formed when sodium achieves a stable electron configuration?
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