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Magnetism

/Magnetism

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 [...]

Permanent Magnets Magnetism and Electromagnetism

Permanent Magnets Magnetism and Electromagnetism Centuries ago, it was discovered that certain types of mineral rock possessed unusual properties of attraction to the metal iron. One particular mineral, called lodestone, or magnetite, is found mentioned in very old historical records (about 2500 years ago in Europe, and much earlier in the Far East) as a [...]

Basic Knowledge Of Magnetic Materials

Basic Knowledge Of Magnetic Materials About Magnetic Materials: Magnetism is one of the fundamental properties of matter. Magnetic phenomena are associated with various forms of charge motion. Magnetic fields are generated by the motion and spin of electrons within a material. All matter is magnetic. According to the magnetic nature of the difference can be [...]

Why & How Do Use Magnets in Headphones?

Why & How Do Use Magnets in Headphones? Magnetic materials and magnetic fields are all around us but it may come as a surprise to you that the headphones you’re wearing have magnets, too! Why & How Do Headphones Use Magnets? Headphones act as transducers of energy, converting electrical energy (audio signal) into mechanical wave [...]

4 Factors Causing Your Magnets to Get Weaker

4 Factors Causing Your Magnets to Get Weaker Get the most value from your investment by avoiding potential magnet-weakening forces. Here's how! Whether you are buying magnets for home, office, hobby, or industrial use, you surely want to protect your new purchase to ensure they last as long as possible and stay as strong as [...]

How Strong are Speaker Magnets

How strong are speaker magnets? Speaker magnet strength ranges from about 0.001 tesla all the way up to about 1.5 tesla (the strongest neodymium magnets). The basic function of speaker magnets is to translate an electrical signal into an audible sound. To achieve this functionality, speaker magnets don’t need to be extremely strong. So why [...]

What is Maximum Working Temperature of Permanent Magnet?

What is Maximum Working Temperature of Permanent Magnet? Permanent magnets are widely applied in various motors, sensors/instruments and electronics, their temperatures almost vary more or less during work. These temperature variations are resulted from eddy current effect and/or ambient temperature variation. Due to thermal fluctuation and magnetic domain evolution, a permanent magnet loses some or [...]

How to Magnetize and Demagnetize a Permanent Magnet

How to Magnetize and Demagnetize a Permanent Magnet Due to random orientation for micro magnetic domains, a permanent magnet usually does not provide any magnetic flux when it is produced. It needs to be magnetized to saturation for use. So how to magnetize a permanent magnet? The basic principle is using a coil, i.e. an [...]

Two Advantages of Electromagnet Over Permanent Magnet

Two Advantages of Electromagnet Over Permanent Magnet Magnets come in two main types: permanent magnets and electromagnets. As its name suggests, a permanent magnet is always magnetized -- think of a kitchen magnet that stays stuck to a refrigerator door for years. An electromagnet is different; its magnetism works only when powered by electricity. Although [...]

The Difference Between Maximum Working Temperature and Curie Temperature of Magnet

The Difference Between Maximum Working Temperature and Curie Temperature of Magnet Maybe some people think the maximum working temperature of magnet is same as its Curie temperature. Actually, this is a mistake. The magnetic material can be divided into 5 kinds: ferromagnetism, ferrimagnetism, anti-ferromagnetism, paramagnetism, diamagnetism. Iron, Cobalt and Nickel are ferromagnetic material, also permanent [...]

Curie Temperature of Permanent Magnets

Curie Temperature of Permanent Magnets Regarding the Curie temperature of permanent magnets, many people will ask whether the Curie temperature of magnets is the highest working temperature of magnets. We Baidu this sentence, found that there are two distinct replies, one is a positive response, the other is the opposite, then in the end Curie [...]

Halbach Array for Magnetic Water Conditioner

Halbach Array for Magnetic Water Conditioner Regularly we see a magnetic water conditioner including two magnets with opposite magnetic poles face-to-face cliped together, just simply clip them together onto the water pipes will get a magnetized water resulting from flowing water cutting the magnetic filed. The advantages are low cost and simple operation but the [...]

Magnetism Magnetic Terminology and Definitions

Magnetism Magnetic Terminology and Definitions Formerly it was beleived that magnetism represented an independent physical phenomenon. It is a fact, however, that magnetic processes are connected to electric processes, that each electric process is a magnetic one at the same time, and vice versa. For a better understanding of physics related to magnets we have [...]

Facts About Magnets

Facts About Magnets Magnets are objects that produce magnetic fields. Facts About Magnets There are only a few materials on earth that produce their own magnetic fields. However, there are some materials such as iron, that can be manipulated to produce their own magnetic fields. Uses Magnetic materials have several applications. VHS tapes and audio [...]

Difference Between Light Rare Earth Element (LREE) & Heavy Rare Earth Element (HREE)

Difference Between Light Rare Earth Element (LREE) & Heavy Rare Earth Element (HREE) LREE HREE Rare earth elements possess special chemical and physical properties that they help make smartphones, hybrid cars and other high-tech devices possible. REEs consist of the 15 elements in the Lanthanide series and two other elements that don't belong to that [...]

Magnetism Measurement

Magnetism Measurement General magnetic capacity measurement Magnetic Properties: Br, Hcb, Hcj, (BH)max, Hk, Ms, ?rec, Hk/ Hcj etc. The test instrument used is the Hysteresisgraph tester. Hcj value between 50 and 20,000 Oe can be measured. Magnetism Measurement Magnetic properties at high and low temperatures (-40 to 250 ℃): Properties tested at any [...]

Laboratory Magnets

Laboratory Magnets, Laboratory Equipment, Lab Magnets Our testing laboratory houses a range of laboratory equipment, representing smaller scaled versions of our industrial product range. Magnets used in Research Laboratories often present some magnetic challenges. HSMAG Magnet  are frequently asked to provide a magnetic assembly with a specific shape or strength of field for a particular [...]

Magnet Attracting Repulsion Principle

Magnet Attracting Repulsion Principle Magnet Attracting Repulsion - Now more and more people are using magnets, we want to discuss some of the most basic issues with you first. How do magnets attract each other? How are they excluded? How to make the screwdriver magnetized? Magnet basics magnets can attract each other or repel each [...]

Water Anti-scale Magnetic Treatment

Water Anti-scale Magnetic Treatment, Magnetic Water  Treatment Magnetic water treatment (also known as anti-scale magnetic treatment or AMT) is a method of supposedly reducing the effects of hard water by passing it through a magnetic field as a non-chemical alternative to water softening. Magnetic water treatment is regarded as unproven and unscientific. There is a lack [...]

Explaining Magnetism

Explaining Magnetism with The Domain Theory In the early 20th century, before scientists properly understood the structure of atoms and how they work, they came up with an easy-to-understand idea called the domain theory to explain magnetism. A few years later, when they understood atoms better, they found the domain theory still worked but could [...]

Magnetism Electricity: Theory of Electromagnetism

Magnetism Electricity: Theory of Electromagnetism Electromagnets show that you can make magnetism using electricity. In fact, as European scientists discovered in the 19th century, electricity always makes magnetism when it moves about or changes. Every time an electric current flows in a wire, it generates a magnetic field all around it. Changing electricity, in short, [...]

SIX Things to Know About Magnets

SIX Things to Know About Magnets Almost everyone knows these six basic facts about how magnets behave: 1, A magnet has two ends called poles, one of which is called a north pole or north-seeking pole, while the other is called a south pole or south-seeking pole. 2, The north pole of one magnet attracts [...]

Magnetism

Magnetism Science is our understanding of how the world works—and generally the world works fine whether we understand it or not. Take magnetism, for example. People have known about magnets for thousands of years and they've been using them practically, as compasses, for almost as long. The ancient Greeks and Romans knew as well as [...]

Do magnets temperature affect magnetism in a magnet?

Do magnets temperature affect magnetism in a magnet? Yes, temperature affects the strength of a magnet. Colder temperatures will permit the magnetic field strength to increase a bit and hotter temperatures will decrease it a bit. The effects can be demonstrated by a simple experiment with a bar magnet and a handful of carpet tacks. [...]