According to Wikipedia, “An electron microscope is a microscope that uses a beam of accelerated **electrons** **as a source of illumination**. **As the wavelength of an electron can be up to 100,000 times shorter than that of visible light** **photons**, **electron microscopes have a higher resolving power** **than** **light microscopes** **and can reveal the structure of smaller objects**”.
Can anyone explain the text in bold? I don’t understand how an electron can be a source of illumination.
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There is no light involved. Electron microscopy uses electric charge to measure distance from sensor to sample surface in micro millimeter increments. A computer uses this data to construct an image.
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