According to a recent report from the American Daily Science website, German scientists created an artificial magnetic monopole at the mixing point by mixing small magnetic spins (small magnetic tips on the surface of the magnet), whose properties are similar to the hypothetical magnetic The monopole is exactly the same. Scientists say that in addition to basic research, magnetic monopoles can also be used to manufacture computer parts. The research was published in the journal Science.
Magnetic monopole refers to some magnetic materials with only a south pole or north pole single pole. As early as 1931, British physicist Paul Dirac used mathematical formulas to predict the existence of magnetic monopoles. At that time, he believed that since electrons with basic charges exist in the universe, particles with basic "magnetic charges" should exist. Since then, scientists have begun their search for magnetic monopoles, but so far no traces have been found.
Now, scientists from the universities of Cologne, Munich, and Dresden have formed an artificial magnetic monopole inside a solid substance through experiments, which has the same properties as the magnetic monopole.
Over the past few years, the research team has conducted a detailed examination of the materials that form magnetic gyres inside. These magnetic rotations have the same effect on the movement of electrons as magnetic fields. Therefore, they used artificial magnetic fields to describe these magnetic rotations and their effects on electrons, and measured them in the same way as ordinary magnetic fields.
The researchers wanted to know the consequences of destroying this magnetic rotation. To this end, they used a magnetic force microscope to observe the magnetic rotation and measure the direction of magnetization that caused the magnetic rotation. It was found that when damaged, the magnetic spins obviously merged together.
So, what happened inside the substance? The measurement results using the neutron diffuser showed that the same process occurred here, but no single magnetic rotation was observed, and subsequent computer simulation results showed that the surface was observed The rotation around the mixing process also appears in this substance.
Because each magnetic spin carries an artificial magnetic field, their manufacture or destruction will appear at the mixing point. Professor Rosch of the University of Cologne said: "This means that there must be an artificial magnetic monopole at this point. When two magnetic spins are mixed, an artificial magnetic monopole will flow across its surface, and its properties are It ’s amazing that the magnetic monopoles in the hypothesis are exactly the same. "
In addition to basic research, artificial magnetic monopoles also have other potential applications. Many research teams are currently trying to clarify the question: Can magnetic spin be used to manufacture computer parts, and if we can, we must manufacture and destroy magnetic spin, then magnetic monopoles will also play an important role in this field.
Dining chair is a common seat in restaurants, bars, cafes and other places for people to use when dining. According to different design styles, materials, functions and uses, dining chairs can be divided into a variety of categories. The following will be a brief introduction to the product classification of dining chairs.
First, according to the design style classification
1. Simple modern style: Simple modern style dining chairs usually use simple lines and Outlines, focusing on functionality and practicality, suitable for modern restaurants and cafes.
2. European classical style: European classical style dining chairs pay attention to gorgeous details and decoration, common hollow carving design and curve shape, suitable for high-end restaurants and banquet places.
3. Nordic style: Nordic style dining chairs focus on simple, natural and comfortable design, usually using wood materials and simple lines, suitable for family restaurants and cafes.
4. Industrial style: Industrial style dining chairs often use metal materials, with simple, solid and practical characteristics, simple and unadorned, suitable for cafes and bars and other places.
Second, according to the material classification
1. Wooden dining chair: Wooden dining chair is usually made of solid wood or artificial wood, with natural, environmental protection and warm characteristics, suitable for families and cafes and other places.
2. Metal dining chair: Metal dining chair is often made of metal materials such as iron, aluminum or stainless steel, with strong, durable and easy to clean characteristics, suitable for bars and cafes and other places.
3. Plastic dining chair: Plastic dining chair is usually made of polypropylene or polycarbonate and other plastic materials, with light, waterproof and easy to clean characteristics, suitable for fast food restaurants and school cafeterias and other places.
Third, according to the use of classification
Generally, it can be divided into two uses: domestic and commercial.
1. Home dining chair: Home dining chair pays attention to comfort and beauty, common dining table chair, folding chair and bar chair.
2. Commercial dining chairs: Commercial dining chairs pay attention to durability and practicality, common bar chairs, cafe chairs and fast food restaurant chairs.
In general: dining chair as one of the important furniture in restaurants, bars, cafes and other places, according to the design style, material and use of different, can be divided into a variety of categories. Choosing a dining chair that suits your place and needs can enhance the comfort and beauty of the dining environment.
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