Why Light Microscopes Should Not Be Replaced by Electron Microscopes
By using the electron optics principle to replace light beams and optical lenses with electron beams and electron lenses, electron microscopes are able to view the tiny structures of substances at extremely high magnifications. The fact that electron microscopes must operate in a vacuum and that the irradiation of electron beams would harm biological material prevents them from totally replacing optical microscopes, despite the fact that their resolving power is far greater than that of optical microscopes. Microscopes are not the same in terms of price or scope of work. I hope you can use my response.
For the following reasons, electron microscopes cannot totally replace optical microscopes.
1. Electron microscopes are optical microscopes that have CCDs, LCD screens, or other computer-related additions. One can only refer to this as a video microscope. CCDs take the place of the human eye during the entire imaging process. Because electronic magnification in video imaging is a virtual magnification and is too different from the human eye in terms of pixels, photosensitive effects, and other elements, the impact is too different from that of a visual microscope;
2. Another very significant factor is that, while CCD is used for planar imaging, human eyes, especially when viewed via binoculars, will produce a strong three-dimensional effect, which is why the contrast between the two is too great;
3. Scanning electron microscopes are the most common form of electron microscope. This type of microscope has a far better effect than standard optical microscopes, although industry uses it much less frequently due to its exorbitant cost.
