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Powerful magnets have been widely applied to astronomy, geology, archaeology, and mining and other fields

by:Newland     2020-04-20
Powerful magnet, is refers to the ndfeb magnet. It compared with the ferrite magnets, alnico, samarium cobalt magnetism can greatly over several other magnets, ndfeb magnets can adsorb itself, 640 times the weight of the weight, so the ndfeb by outsiders often referred to as a powerful magnet. Will be a magnet magnetization to technology by external magnetic field in a closed environment after saturated undo the external magnetic field, the magnetic induction intensity of magnet performance we call residual magnetism. We already know that the earth is a giant magnet, so its magnetic come from? It is the ancient? And geological conditions have to do it? The magnetic field in the universe and how? At least we've all seen brilliant display of northern lights on the images. Since the ancient times in China have a record of the aurora borealis. The aurora borealis is actually the result of the interaction between particles and the magnetic field of the solar wind. High-energy charged particles from the solar wind is from the sun. When they reach the earth, and earth's magnetic field interact, as if in the current carrying conductor in magnetic field force, make the particles to the polar motion and aggregation, and high altitude rarefied gas phase collision with earth, gas molecules excited as a result, to shine. Sunspots are very intense magnetic activity on the sun. The outbreak of sunspots impact on our lives, such as radio communication temporarily stopped. Therefore, studying sunspots is important to us. The change of the magnetism can be used for exploration of ore deposits. Because of all the material has strong or weak profiled magnets, if they get together, formation of ore deposits, so must the earth magnetic field in the vicinity of the disturbance, the abnormal situation makes the earth's magnetic field. According to this, can be in the land, sea or air measuring the earth's magnetism, obtain geomagnetic map, magnetic anomalies of geomagnetic map area is analyzed and the further exploration, often can be found that the unknown deposits or special geological structure. Different geological s rocks tend to have different magnetic. Therefore, can according to change of the rock magnetic auxiliary judgment of geological time and changes in the earth's crust. Many mineral resources are symbiotic, meaning that several minerals mixed together, they have different magnetic. Using this feature, people developed a magnetic separator, the different magnetic minerals with different composition and the difference of magnetic strength, with a magnet to attract these substances, then they are attractive, results can be separate mixed in with different magnetic minerals, magnetic separation is realized. Powerful magnets to magnet magnetization reverse magnetic field strength required for zero, we call it intrinsic coercive force. Method is simple, powerful magnets are below 80 degrees of heat-resistant, as long as we put a strong magnet on the fire roast a few minutes, cooling after you put it in next to the pig, it found that he has lost its magnetic, not up. Company name: address: dongguan city based wangniudun town pier five chung industrial company telephone: 0769 - 81313183
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