They are also very sensitive to vibration and external magnetic fields. They are very costly and very large in size so needed to be kept in a very large area. Electron microscopes are aided in technological and industrial applications, such as semiconductor inspection, computer chip manufacturing, and quality control as well as in production line. The very first advantage is its great magnification. Hence, the microscope has an ultrahigh vacuum inside the tube. The electrons can collide the air molecules and get deflected, which hinders the image formation. It has large difference between the bright microscope and the electron microscope is that the user uses the lens and visible light source whereas the later uses electromagnetic lenses (doughnut-shaped electromagnets) and electron beam. Principle of the electron microscope is closely resembled to the bright microscope.
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