SEMs produce images of surfaces which are high resolution and surpass the photographs that common microscopes present. There may be an electron beam which comes from a heated source inside the microscope, and it has lenses which might be electrostatic meant for focusing the beam. The beam is steered by scanning coils so that the sample being examined is scanned in a sample that moves line by line. The electron beam runs in a scientific vogue till it hits an atom in the pattern being looked at, and it will make a sign. Some incessantly measured alerts include secondary electrons, that are emitted by a particle that the electron from the microscope agitated.
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