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The difference between polarizing microscope and ordinary microscope
12-25

The difference between polarizing microscope and ordinary microscope

Microscopes can magnify tiny objects that can't be seen by human flesh eyes through microscopes, which can expand the vision of human beings and promote the discovery and research of unknown things. Microscopes can be classified into optical microscope and electron microscope. There are many classifications under them. The polarizing microscope we are talking about today belongs to optical microscope. The differences between it and ordinary microscope are summarized in the following sections. 1. The ordinary microscope can observe the image according to the different transmittance of the sample. The principle of polarizing microscope is to use diffraction to observe the structure of the product more precisely. 2. The stage of ordinary microscope can't be rotated, but the stage of polarizing microscope can be rotated. Compared with ordinary microscope, it has a group of polarizing and checking bias. It can change ordinary light into polarized light, so as to identify whether the object is single refraction or birefringence. All birefringent objects must be observed by polarizing microscope, and the base of general crystal must be observed This characteristic is birefringence, so polarizing microscope is widely used in glass, semiconductor, mineral and other fields. 3. The detection method of polarizing microscope is not possessed by ordinary microscope, but also has the skills of ordinary microscope. However, the ordinary microscope with polarizing microscope does not support it. Therefore, the application scope of polarizing microscope is relatively wide, and the operation requirements are relatively high. Of course, the price is higher than that of ordinary microscope. Polarizing microscope can be said to be the greatest invention of mankind in this period. It is the symbol of mankind entering the atomic age and has made great contributions to the research in various fields and the discovery of new species.
Basic optical principle of microscope and imaging system
12-25

Basic optical principle of microscope and imaging system

Microscope is an optical refraction imaging system composed of two kinds of lens, which can be affected by different magnification after different objective lens is magnified. In general, in the focal length section, the lens closer to the object becomes the objective lens, while the image close to the eye is virtual image. This kind of lens is called objective lens, and the eyepiece and objective lens are the most basic lenses of microscope. With the progress of science and technology, people need to observe the problem more precisely, so the microscope is more and more clear, but its basic optical principle is mainly divided into two aspects First, refraction and refractive index, because light in the same medium, when the density of media is different, it is easy to refract. This is because of the different propagation speed of light in different media. However, when irradiating the transparent object in a non perpendicular way, it will change the direction, so it forms the refraction angle with the normal. Second, the performance of the lens. The lens is the basic component of optics, and the objective lens and eyepiece are all composed of objective lens. At the same time, the lens is also divided into convex lens and concave lens. The main basis of microscope imaging is light. When a beam of parallel light irradiates a point behind the lens, this point is called the focus, and adjusting different focal length according to the focus will get different times However, the image passing through a concave lens is usually an upright virtual image, while a convex lens is an upright real image. And when using the objective lens, we should pay attention to the optical accessories of the lens. Moreover, according to the development of science and technology, there are various kinds of microscopes, such as full-phase microscope, polarizing microscope, reflecting microscope, and so on, and the quantity required is relatively large.
It's very simple to master these microscopes
12-25

It's very simple to master these microscopes

Microscope is no stranger in our daily life. Maybe you are very familiar with its composition, but do you still remember its operation steps? Although we have relevant knowledge introduction in the textbook of junior high school, we can't remember it. Next, let's learn about it together! First, take the mirror and place it When we use the microscope, we must be careful, holding the arm with the right hand, and firmly dragging the base with the left hand. This is only the first step, and care must be taken to avoid damaging the microscope. Then put the microscope on the experimental platform, slightly to the left, and then you can install the eyepiece and objective lens. Second, light At this time, we need to slowly rotate the converter so that the low power objective lens is aligned with the through-hole. One thing to strictly follow the operating procedures of the microscope. At this time, we need to aim the left eye at the eyepiece, and the right eye can be opened. When we have finished observing, we can draw figures on the paper. You can also adjust the mirrors according to the brightness of the field of vision. Third, observation This is a crucial step. Of course, we should make preparations in advance and put the objects to be observed on the stage. Press firmly with the tablet. Then we have to slowly rotate the coarse focusing spiral to gradually lower the lens barrel. This distance depends on the distance between it and the carrier plate. As long as the distance is appropriate, the eye should also look at the objective lens. The next step is similar to this step. The left eye should look at the eyepiece, but it should be noted that it should be rotated in the opposite direction. Out of the focus spiral, let the lens tube slowly rise, appropriate rotation until the object is clear. Then turn the fine focusing spiral, which will make the image more clear. The operation of microscope is actually very simple. As long as you look at the relevant knowledge, follow the above steps can quickly master this skill. It is very helpful for us to learn the operation steps of microscope and do some experiments. At the same time, it is also helpful for us to understand more microorganisms.
The appearance of microscope leads to new progress in the field of science and technology
12-25

The appearance of microscope leads to new progress in the field of science and technology

Now is the era of science and technology, as the leader of the 21st century, we should make contributions to this society. Today, we are going to tell you about a new scientific and technological instrument microscope, which is both familiar and unfamiliar. Still remember from our junior high school experimental class began to contact it, so I believe it is not strange to mention it. Microscope is a common optical instrument. It is composed of several lenses and lenses. It is used to replace the naked eye to see tiny creatures, which is also a sign of the progress of human science. Generally, it can be divided into electronic equipment and optical equipment. Most researchers now use electronic devices. But optical devices are still used in biological research. The optical microscope was created by the Dutch in the 1990s. It can fully enlarge an object between 1500 and 2000 times. The resolution of the optical microscope can reach half of the wavelength. In China, the length of such mechanical tube is generally about 160 mm. It can easily show the internal structure of thousands of human fine fibers and plant fibers in front of people. The clear dynamic effect brings convenience to the experiment, helps scientists to discover and research new organisms, and makes an unprecedented contribution to medical treatment. No matter in surface science, material science, life science and other fields, microscope has a great response and significance, and has a very considerable prospect of promotion. It is recognized by international scientific organizations as one of the greatest scientific achievements in the 20th century. The emergence of microscope has led to new progress in the field of science and technology.
What are the factors that affect the price of microscope
12-25

What are the factors that affect the price of microscope

There are many kinds of microscopes in the market now, with all kinds of models and outstanding performance, which meet the needs of our different customers, but also bring us some troubles in choosing them. In particular, the prices of different microscopes make us headache. What factors affect the price of microscopes? 1、 Brand effect of microscope Among the factors affecting the price of microscopes, the brand effect is the most prominent. No matter what kind or model of microscope is, as long as some big brands and well-known manufacturers produce their products, the price is usually very high. The reason is that such manufacturers often have better quality and performance, because they have experienced years of fierce market competition and have more valuable market experience Therefore, it has more competitive advantages in the development of microscope. 2、 Price difference of different types and models Among the factors that affect the price of microscopes, different types and models are also important factors. In particular, the working performance of the environment in the use process, especially the price of some special microscope products is generally high, while the demand of Putonghua in some public areas is generally low, and there are even different types of microscopes of the same brand There are also obvious differences in product prices, which is also due to different materials, design, processing technology, especially the use of performance, resulting in different investment funds, so the product price is also significantly different. If we want to buy a high-quality microscope with better quality and lower price, we must go more and have a look at it, and compare the products with the others. We should pay more attention to the price of the microscope as a whole, especially the price of the microscope, so that we can provide us with better service.
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