1. Different resolutions
The resolution of electron microscope is higher than that of optical microscope. The resolution of the electron microscope has reached the nanometer level, 0.2 nm, while the optical microscope is only 0.2 μ m, which means that the electron microscope is 1000 times higher than the optical microscope in this respect.
2. Components are different
The electron microscope has three parts, namely, the mirror tube, the vacuum device and the power cabinet. The optical microscope is mainly composed of four parts, namely, objective lens, eyepiece, reflector and condenser.
3. Different principles
The electron microscope uses an electron beam to penetrate the sample, and then magnifies the image by the lens. The optical microscope mainly uses the magnifying imaging principle of convex lens to magnify the image of the sample.
4. Purpose
Because of its high resolution, the electron microscope can be used to observe the fine material structure that cannot be distinguished by ordinary microscope, and can also be used to help analyze the material composition. The optical microscope is mainly used for observing microscopic substances in biology and medicine, and as an experimental tool for students in teaching.