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Why can magnets attract or repel each other? If you approach two magnets, you will find a mysterious force between them. If you make the N pole and S pole opposite each other, they will be strongly attracted together; If you make the N pole and N pole relative, or the S pole and S pole relative, they will be strongly repelled. This is the law between magnets: opposite poles attract, same poles repel. Where does this power come from? To answer this question, we need to look at how magnets generate magnetic fields from a microscopic perspective.: 04

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What is a magnet? A magnet is an object that can generate a magnetic field. A magnetic field is an intangible force field that can exert a force on other objects around it, which is called magnetic force. Magnetic force can attract or repel certain objects, which are called magnetic substances. The most common magnetic substances are metals such as iron, nickel, and cobalt.Magnets have two special parts called magnetic poles. One magnetic pole is called the North Pole, and the other is called the Guide Pole. If a hanging magnet is placed on Earth, it will automatically rotate, causing the N pole to point to the north of the Earth and the S pole to point to the south of the Earth. This is because the Earth itself is a huge magnet, with two magnetic poles located near the north and south poles. The magnetic field generated by the Earth is like a compass, which can help us determine direction.: 04

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Teach you how to choose the right permanent magnet for yourself 1、 Sort by price from lowest to highest1. Ferrite magnet. Due to the cheap materials, the price of ferrite is very low and its usage is very large. It is mostly used in handbag packaging factories, speaker factories, and leather product factories.2. Neodymium iron boron magnet. High cost-effectiveness, although its quantity is not as large as ferrite, its output value is the highest. We are involved in various industries, and our customers are mostly used in fields such as magnetic connectors, DC motors, robots, and smart homes.3. Aluminum nickel cobalt magnet. More used in military products.4. Samarium cobalt magnet. High cost, only used in some high-end permanent magnet motors.2、 In terms of magnetic force (from strong to weak)1. Neodymium iron boron. The third generation rare earth permanent magnet product is currently the strongest magnetic material, known as strong magnet, strong magnet, magnetic king, etc. by outsiders, with a maximum magnetic energy product of 52 megagauss Oster: 28

2023-11

Let you quickly understand the difference between neodymium iron boron magnets and ferrite magnets There have been many introductions online about the differences between neodymium iron boron magnets and ferrite magnets. In order to help beginners and newcomers quickly understand the differences between the two, I have compiled a chart to make you look concise and time-saving.The following figure shows some comparisons between neodymium iron boron magnets and ferrite magnets, including magnetic performance, temperature resistance, volume size, stability, processing difficulty, conductivity, and application range.Summary: The magnetic properties of permanent magnet ferrite are not as good as neodymium iron boron, but it has high resistivity, good stability, strong resistance to environmental changes, rich raw material sources, high cost-effectiveness, mature and simple process, and no oxidation problems. Therefore, it is widely used in mid to low end products with low requirements for magnetic properties.You can choose the appropriate magnet material and performance according to your: 28

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What does a magnet rely on to transmit force? Although the name of a magnet is only 'magnetic', it also has an 'electric' aspect. From a microscopic perspective, magnetism is the embodiment of electricity, so there must be an electric phenomenon if there is a magnetic phenomenon.Magnets are transmitted by a field, which is a massless substance called virtual particles. A magnetic field is composed of virtual photons. But sometimes virtual photons also have mass, such as the relativistic mass generated by motion.In fact, there is no clear boundary between virtual photons and photons, and sometimes the two are equivalent. It can be understood that magnetic fields transmit interactions through virtual photons that cannot be described by physical particles.: 27

2023-11

Magnets can attract iron So far, humans have only discovered four forces in nature.According to the order of strength, they are: strong interaction force, electromagnetic force, weak force, and gravity.Strong and weak interactions act on microscopic particles, and the most common forces in the macroscopic world are gravitational and electromagnetic forces.Except for gravity, all three other forces have propagators that transmit and interact with each other. Gravity is very special, and currently no gravitons have been found, but the essence of gravity can be explained through the curvature of spacetime.: 27

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