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Magnetism

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How inductive sensors work

How inductive sensors work Inductive sensors are often used to measure position or velocity, especially in harsh environments. The terminology and technology of inductive position sensors can be confusing for many engineers. In this article, the various types of inductive sensors are explained, how they work, and their respective strengths and weaknesses. Inductive position and [...]

Efficient use of weak magnetic energy, new collectors help IoT sensors “self-generate”

Efficient use of weak magnetic energy, new collectors help IoT sensors "self-generate" CHINA's "dual-carbon" strategy advocates a green, environmentally friendly, and low-carbon lifestyle, which depends on the continuous development and innovation of green energy technologies. At the moment when our country is vigorously developing renewable energy, the recovery and reuse of micro-energy such as magnetic [...]

Why do magnets only attract iron?

Gold, silver, copper, and iron are all metals. Why do magnets only attract iron? It is a well-known phenomenon that a magnet will attract iron. I believe that everyone has tried to use a magnet to approach other metals to see if the magnet can attract them. However, the "experimental results" are often disappointing. Because [...]

Introduction to the principle of magnet power generation

Introduction to the principle of magnet power generation, Free electrons in a conductor are subject to the Lorentz force According to the law of conservation of energy, energy cannot be generated without reason, nor can it disappear without reason. The electric energy generated by magnets must come from other forms of energy. Physics tells us: [...]

High Temperature Can Make Magnets Lose Magnetism Quickly

High Temperature Can Make Magnets Lose Magnetism Quickly A magnet will lose some magnetism immediately when it encounters a high temperature that exceeds its own tolerance. How much high temperature does it need? This depends on the coercive force of the magnet, which is usually expressed by the letter after the magnet grade, such as [...]

Earth’s Magnetic Field Reversal

Earth’s Magnetic Field Reversal Earth’s Magnetic Field Reversal Took Three Times Longer Than Thought A new study suggests the last field reversal 773,000 years ago took 22,000 years to occur, which could explain some of the inner workings of our planet’s core。 Earth’s magnetic field is known to flip direction with a somewhat unnerving regularity: [...]

Magnetic Pole Reversal Happens All The (Geologic) Time

Magnetic Pole Reversal Happens All The (Geologic) Time Scientists understand that Earth's magnetic field has flipped its polarity many times over the millennia. In other words, if you were alive about 800,000 years ago, and facing what we call north with a magnetic compass in your hand, the needle would point to 'south.' This is [...]

What Is Magnetic Reversal?

What Is Magnetic Reversal? Earth is like a giant magnet in several ways. Not only does it have a magnetic north and south pole that act similarly to the poles on bar magnets, but the planet is surrounded by a strong magnetic field, which is electrically charged and able to interact with magnetized matter. The [...]

What is Ferromagnetic Paper?

What is Ferromagnetic Paper? Ferromagnetic paper is formed by impregnating ordinary paper or newspaper with "magnetic nanoparticles". It can be used to make low-cost "micro-motors" for surgical instruments, tiny tweezers to study cells, tiny robots and tiny speakers. At present, the researching people will also ferromagnetic origami paper, to study more complicated design. Ferromagnetic paper [...]

How Helpful are Powerful Magnets in Daily Life?

How Helpful are Powerful Magnets in Daily Life? With the continuous advancement of technology, the use of powerful magnets is becoming more and more extensive, so where can powerful magnets be used in our daily life? What are the advantages of strong magnets that make many products widely used? HSMAG strong magnet How Helpful [...]

The Great Advantages of NdFeB Magnets in Magnetic Therapy Field

The Great Advantages of NdFeB Magnets in Magnetic Therapy Field Ningbo HSMAG Magnetic Industry Co., Ltd. is mainly engaged in two major parts: 1. Industrial supplies: sintered NdFeB, bonding NdFeB and magnetic components, 2. Civilian supplies: gun magnets, rubber magnets, salvage hooks, rotating hooks , magnetic hooks such as square hooks. Among them, the main [...]

Testing Magnetic Field Strength With a Gaussmeter

Testing Magnetic Field Strength With a Gaussmeter Calculate the baseline or original voltage. This can be done using a gaussmeter, also known as a magnetometer or an EMF detector (electromagnetic field detector), which is a hand-held device that measures the strength and direction of a magnetic field strength. They are readily available to buy and [...]

What does the Magnet N35 Mean?

What does the Magnet N35 Mean? What does the magnet N35 mean? How many Gausses does the magnet N35 generally have? Let's talk about this today. N35 magnet magnet N35 mean N35 is a brand of NdFeB magnet. N refers to NdFeB; N35 N38 N40 N42 N45 N48, etc. It is arranged in [...]

Magnetic Field Lines of Pot Magnet

Magnetic Field Lines of Pot Magnet As for the term "pot magnet", many people may have heard for the first time that the pot magnet is a kind of magnet wrapped in a steel shell and shaped like a pot, so we call it pot magnet (cup magnet), also called magnetic component. Through magnetic circuit [...]

What is the MAGNETIC MOMENT

What is the MAGNETIC MOMENT The magnetic moments is a property that we use to verify the quality of our magnets. It is a way to measure the strength of a magnet and is widely used throughout the industry. Moreover, it is an easy, quick, and repeatable measurement. The magnet grade and magnet volume define [...]

Electromagnetic Radiation Definition

Electromagnetic Radiation Definition Electromagnetic radiation is self-sustaining energy with electric and magnetic field components. Electromagnetic radiation is commonly referred to as "light", EM, EMR, or electromagnetic waves. The waves propagate through a vacuum at the speed of light. The oscillations of the electric and magnetic field components are perpendicular to each other and to the [...]

The Relationship Between Electricity and Magnetism

The Relationship Between Electricity and Magnetism Together, these two phenomena form the basis for electromagnetism Electricity and magnetism are separate yet interconnected phenomena associated with the electromagnetic force. Together, they form the basis for electromagnetism, a key physics discipline. Key Takeaways: Electricity and Magnetism Electricity and magnetism are two related phenomena produced by the electromagnetic [...]

How Electromagnets Work

How Electromagnets Work What do a wrecking yard, a rock concert and your front door have in common? They each use electromagnets, devices that create a magnetic field through the application of electricity. Wrecking yards employ extremely powerful electromagnets to move heavy pieces of scrap metal or even entire cars from one place to another. [...]

Factors Affecting Magnetic Force of Permanent Magnets

Factors Affecting Magnetic Force of Permanent Magnets Many customers who came to inquire about the magnet’s attraction asked the most about how many Gauss can attract, or send a specification to ask how much it can attract. This is introduced in previous articles. If you are interested, you can click to understand. Today’s main Let’s [...]

Wireless Energy Transfer Through Magnetic Fields

Wireless Energy Transfer Through Magnetic Fields If the inventor Nikola Tesla (1856-1943) was always with us, he would surely be very satisfied, since he thought of transmitting energy wirelessly almost a century ago. In fact, his idea was not so impossible to implement, since energy can now be transmitted over the wire using magnetic fields, [...]

1800 After History of Magnetism and Electricity

1800 After History of Magnetism and Electricity 1820 - Electromagnetism, Current In 1820, a physicist Hans Christian Oersted, learned that a current flowing through a wire would move a compass needle placed beside it. This showed that an electric current produced a magnetic field. Andre Marie Ampere, a French mathematician who devoted himself to the [...]

Before 1800 History of Magnetism and Electricity

Before 1800 History of Magnetism and Electricity 600 BC - Lodestone The magnetic properties of natural ferric ferrite (Fe3O4) stones (lodestones) were described by Greek philosophers. 600 BC - Electric Charge Amber is a yellowish, translucent mineral. As early as 600 BC the Greek philosopher, Aristophanes was aware of its peculiar property: when rubbed with [...]

Ce Substitution Level in NdFeB Magnets

Ce Substitution Level in NdFeB Magnets Ce substitution level in Nd-Fe-B magnets has been significantly increased via the binary main phase (BMP) approach, i.e. sintering the mixture of Ce-free and Ce-containing RE 2 Fe 14 B (RE, rare earth) powders. REFe 2 phase that forms in the high Ce-containing Nd-Ce-Fe-B magnets has been considered to [...]

Magnetism FAQ

Magnetism FAQ Basic Electricity Question 1 A permanent magnet is a device that retains a magnetic field without need for a power source. Though many of us have experienced the effects of magnetism from a permanent magnet, very few people can describe what causes permanent magnetism. Explain the cause of permanent magnetism, in your own [...]

What Is a Magnetometer?

What Is a Magnetometer? Learn the basics of magnetometers, including their relation to hysteresis curves and their applications. Magnetometers are devices that can measure the magnitude or direction of a magnetic field. They are present almost everywhere in electronics. They may be as simple as the one that your smartphone uses to detect whether it [...]

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