Elucidate electron microscopy.
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Electron microscope is a microscope that uses a beam of accelerated electrons as a source of illumination.
In an electron microscope, these four things are slightly different.
1. The light source is replaced by a beam of very fast moving electrons.
2. The specimen usually has to be prepared differently and held inside a vacuum chamber from which the air has been pumped out.
3. The lenses are replaced by a series of coil-shaped electromagnets through which the electron beam travels.
4. The image is formed as a photograph (called an
electron micrograph) or as an image on a TV screen.
In an electron microscope, these four things are slightly different.
1. The light source is replaced by a beam of very fast moving electrons.
2. The specimen usually has to be prepared differently and held inside a vacuum chamber from which the air has been pumped out.
3. The lenses are replaced by a series of coil-shaped electromagnets through which the electron beam travels.
4. The image is formed as a photograph (called an
electron micrograph) or as an image on a TV screen.
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