What is the difference between a compound microscope and an electron microscope?

Lens: Each microscope uses some form of lens of magnification. In compound microscopes, these lenses are made of glass, while in electron microscopes, the lenses are electromagnetic. The difference here is that there is a third type of lens under electron: near the top of the projector lens.

Lighting needs: They all have one thing in common: the lighting they need to use.

For a compound microscope, illumination is some form of specimen under light. Ambient light will not work well on a compound microscope. The light must be bright, usually provided by a small light bulb.

In an electron microscope, illumination is passed through an electron beam of a specimen.

Output area: All microscopes also require a person to look at somewhere in the specimen. The output area is two types of microscopes in the same place

at the top. While one is an eyepiece, and the other is a larger phosphor screen, neither the microscope will use any scientific ability to view the results. Depending on what type of microscope is used, differences in magnification, and resolution, the results may vary slightly, but will produce an output in the same area.

Preparation of specimens.

The microscope is worthless to view almost a specimen. The study of cells and microorganisms requires the use of microscopes. Due to this need, the preparation of specimens often follows the same procedure.

Electron microscopes, despite their much superior magnification and resolution, often work best with dead cell ultrathin sections. Compound microscopes are also associated with dead cells, however, they can also work and live normally.

<> ordinary optical microscope refers to a microscope with a relatively simple structure.

The components of the compound microscope are collocated and have strong scalability.

Optical microscopes use light to observe objects, while electron microscopes use electron beams instead of light beams, with complex structures and high resolution.

The biggest difference between an optical microscope and an electron microscope is that the wavelengths used are different, the former uses visible light, the resolution is up to micron, the maximum effective magnification can only be about 1600 times, and the corresponding depth of field is also very small (micron). The latter uses electrons, which, according to the theory of wavelength of matter, can achieve a resolution of electron microscopes in the nanometer range, which is thousands of times higher than that of optical microscopes, under the acceleration of voltages ranging from tens of kilovolts to hundreds of kilovolts.

When the magnification of the electron microscope is small, its depth of field is large, and it can shoot a very three-dimensional **.

1. Optics tens of thousands to hundreds of thousands. Electronics, millions of dollars or more.

2. Optics is the use of light, and electron microscope is the use of electron beams to see things.

So it must be the magnification of the electron microscope.

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Optical microscope and electron microscope are two different types of microscopes, which differ in definition, classification, and composition.

1. The definitions are different.

Optical microscope (English optical microscope, abbreviated as OM) is an optical instrument that uses optical principles to magnify and image tiny objects that cannot be distinguished by the human eye, so as to extract microstructure information for people.

The application of electron microscopy technology is based on the optical microscope, the resolution of the optical microscope is, the resolution of the transmission electron microscope is, that is to say, the transmission electron microscope is magnified by 1000 times on the basis of the optical microscope.

2. Different classifications.

There are many classification methods for optical microscopes, which can be divided into trinocular, binocular and monocular microscopes according to the number of eyepieces used; According to whether the image has a three-dimensional sense, it can be divided into stereo vision and non-stereo vision microscope; According to the object of observation, it can be divided into biological and metallographic microscopes; According to the optical principle, it can be divided into polarization, phase contrast and differential interference contrast microscopy.

Electron microscopes can be divided into transmission electron microscopes, scanning electron microscopes, reflection electron microscopes and emission electron microscopes according to their structure and use.

3. The composition structure is different.

The optical system of a microscope mainly consists of four parts: an objective lens, an eyepiece, a reflector, and a condenser. Broadly speaking, it also includes lighting sources, optical filters, coverslips and glass slides.

The electron microscope consists of three parts: a lens tube, a vacuum device and a power cabinet.