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磁铁的力量：它们如何影响我们的生活

磁铁的力量虽然看起来很小，但在我们的生活中起着至关重要的作用。它以一种无声而坚定的方式影响着我们的日常生活和工作。

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The Wonderful Road to Magnet Making 1、 The Origin of MagnetsFirstly, let's learn about the origin of magnets. Magnets are materials with permanent magnetism, and the earliest magnets were obtained from nature, such as magnetite ore. However, modern magnet production not only relies on natural resources, but also undergoes scientific precision processing and improvement.2、 The production of ferrite magnetsOne of the most common magnets is ferrite magnets, which are usually made of iron oxide and other metal oxides. The process of making ferrite magnets includes the following steps:1. Material preparation:Firstly, the production of magnets requires the preparation of raw materials, including iron powder, iron oxide powder, and other metal oxide powders. These powders are the main components for preparing magnets. Usually, iron powder is used as the foundation for magnetic materials, while iron oxide and other metal oxides are used to enhance magnetism.2. Mixing:The raw material powder needs to be mixed together to ensu: 08

2024-01

Changes in magnetic field iron Why can some substances be adsorbed by magnets? Here we use the most common example - iron to illustrate. Iron is a metallic element that belongs to ferromagnetic materials, characterized by strong reactions to external magnetic fields. When there is no external magnetic field, the arrangement of atoms in iron is relatively chaotic, with many small magnetic dipoles generated by electron spins and orbital movements in different directions around each atom. These small magnetic dipoles cancel out each other or are randomly distributed, resulting in an overall lack of significant net magnetism.When there is an external magnetic field, the situation is different. An external magnetic field will apply a force or torque to the small magnetic dipoles inside the iron, causing them to tend to align with the direction of the external magnetic field. In this way, small magnetic dipoles that were originally disorganized or had different directions will be arranged into an ordered structure, which: 03

2024-01

How magnets generate magnetic fields A magnet is a special substance that can generate an invisible force field around it, which we call a magnetic field. A magnetic field can be represented by a virtual line called a magnetic field line, which starts from one end of the magnet and ends at the other end, forming a closed loop. If we place a small compass in a magnetic field, it will point along the direction of the magnetic field lines. If we bring two magnets closer, they will arrange their magnetic poles according to the law of opposite attracting and same repelling each other.How does a magnet generate a magnetic field? To answer this question, we need to enter the microscopic world and look at the atoms and electrons inside the magnet. Atoms are the fundamental units of matter, composed of atomic nuclei and electrons. An atomic nucleus is composed of protons and neutrons, and it carries a positive charge. Electrons are small, light particles that carry negative charges and move around atomic nuclei. Charge is a fundam: 03

2024-01

The Wonderful Road to Magnet Making 1、 The Origin of MagnetsFirstly, let's learn about the origin of magnets. Magnets are materials with permanent magnetism, and the earliest magnets were obtained from nature, such as magnetite ore. However, modern magnet production not only relies on natural resources, but also undergoes scientific precision processing and improvement.2、 The production of ferrite magnetsOne of the most common magnets is ferrite magnets, which are usually made of iron oxide and other metal oxides. The process of making ferrite magnets includes the following steps:1. Material preparation:Firstly, the production of magnets requires the preparation of raw materials, including iron powder, iron oxide powder, and other metal oxide powders. These powders are the main components for preparing magnets. Usually, iron powder is used as the foundation for magnetic materials, while iron oxide and other metal oxides are used to enhance magnetism.2. Mixing:The raw material powder needs to be mixed together to ensu: 03

2024-01

How is a magnet made A magnet is a substance made of iron and magnetic materials, which has the properties of attraction and repulsion. In the process of making a magnet, several steps are required.Firstly, it is necessary to choose suitable iron materials. Pure iron or low-carbon steel is usually used. These materials will become magnetic materials after magnetization treatment.Next, it is necessary to process and cut these materials. This process involves heating the iron block in the furnace and then performing operations such as forging, cutting, and polishing. These steps are all aimed at transforming the iron block into the desired shape and size.Then, magnetization treatment is required. This process needs to be carried out in a strong magnetic field in order to turn the iron block into a magnetic material. This step can be achieved by using an energized coil or electromagnet.Finally, surface treatment is required. This step includes applying insulation paint or coating treatment to the surface of t: 03

2024-01

How are sintered neodymium iron boron magnets classified? Do you know that sintered neodymium iron boron magnets are evaluated based on the maximum magnetic energy product. Take a look at our neodymium magnet specifications page and you will find a rule that the maximum value of grade N35 (BH) is 33-36MGOe in the middle. Therefore, higher values indicate stronger magnets, ranging from N35 to N55.The letter after the number represents the maximum operating temperature (usually in Celsius), ranging from M (100 ℃), H (120 ℃), SH (150 ℃), UH (180 ℃), EH200 ℃) to AH (220 ℃). If there is no letter like N42 after it, the maximum operating temperature is 80 ℃.: 03

2024-01

Several magnetization methods for magnets 1. DC magnetization methodDirect current magnetization method is a commonly used method for magnetizing magnets. The principle is to apply a DC voltage at both ends of the magnet to rearrange the magnetic domains inside the magnet, achieving the purpose of magnetization. This method has the advantages of simple operation, low cost, and stable effect, but the magnetization time is longer and the efficiency is slightly lower.Operation method: First, fix the magnet on the magnetization device, and then connect the DC power supply to the magnetization coil. Choose the appropriate voltage, current, and magnetization time based on the size, shape, and magnetic performance requirements of the magnet. During the magnetization process, the magnet will generate heat, so it is important to lower the temperature to prevent a decrease in the magnetic properties of the magnet.2. Pulse magnetization methodPulse magnetization method is the use of high-energy pulse current to magnetize a magnet, which: 03

2024-01

The Disadvantages of Magnets 1. Interference with medical equipmentMagnetic fields can interfere with medical equipment and affect the effectiveness of medical treatment. If patients wear magnets for treatment, it may cause interference with medical equipment such as pacemakers and artificial hearts, leading to accidents.2. Threats to human healthLong term use of magnets for treatment may have negative effects on human health, such as dizziness, nausea, and skin allergies. If the patient belongs to a group of special diseases such as hypertension and varicose veins, using magnets for treatment will worsen the condition and cause adverse reactions.3. Magnets without scientific researchAlthough magnets have been widely used in multiple medical fields, their use has not yet been scientifically studied. Further scientific experiments and research are needed to ensure the efficacy and safety of magnetic therapy, in order to ensure good treatment outcomes and patient safety.: 02

2024-01

The benefits of magnets 1. Improve blood circulationMagnetic fields can stimulate microcirculation in the human body, promote blood circulation, improve the transportation of oxygen and nutrients, thereby promoting cell metabolism, enhancing the body's immune system, and improving physical health.2. Relieve painMagnets have a great analgesic effect, which can alleviate muscle and joint pain and improve human comfort. Magnets can also have a certain therapeutic effect on pain symptoms such as rheumatoid arthritis, back pain, and headaches.3. Promote trauma recoveryMagnets are widely used in the field of wound recovery, which can reduce inflammatory reactions, promote cell regeneration and repair, and improve wound healing speed. In addition, magnets can accelerate fracture healing, reduce pain and discomfort during healing.: 02

2024-01

What is the transmission of magnetic force between magnets As far as we know, all interactions of forces can essentially be attributed to four fundamental forces - electromagnetic force, gravity, strong nuclear force, and weak nuclear force. For example, the magnetic and contact forces (including frictional and elastic forces) that attract magnets to each other are essentially electromagnetic forces.In theory, each fundamental force is transmitted by a fundamental particle (the graviton that transmits gravity has not yet been discovered), and in the case of electromagnetic force, its transmission depends on photons. Since electromagnetic interaction exchanges photons, why can't we see the two magnets that attract each other or the light emitted when pushing an object?According to quantum field theory, photons carrying electromagnetic force are not ordinary photons, but virtual photons, and we cannot see these virtual particles that exist for an extremely short time. So, how do virtual photons transmit electromagnetic force?Virtual photons: 02

2024-01

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