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Electromagnetic

/Tag:Electromagnetic

Understand the Electromagnetic Spectrum

Understand the Electromagnetic Spectrum Begin with naming all the parts. There are 8 parts to the Electromagnetic Spectrum. They are: Radio Waves Microwaves Terahertz Radiation Infrared Light (IR) Visible Light Ultraviolet Rays (UV) X-Rays Gamma Rays By understanding these names, you will need to know its range. Below is showing a table of the range. [...]

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 [...]

Do Microphones Need Magnetism To Work Properly?

Do Microphones Need Magnetism To Work Properly? Magnets and microphones play huge roles in our everyday lives. You may have read somewhere that magnets play a central role in microphones. Is this true? Do Microphones Need Magnetism To Work Properly? Dynamic mics (moving-coil and ribbon) convert energy via electromagnetic induction and have built-in magnets around [...]

Why & How Do Headphones Use Magnets?

Why & How Do Headphones Use Magnets? 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 energy [...]

Safe and Effective Use of Electromagnetic Equipment

Safe and Effective Use of Electromagnetic Equipment The usefulness of electromagnetic equipment cannot be denied. Employed in everything from massive construction cranes to the doorbell in your house, electromagnets use a simple on/off function to perform complex tasks every day. In the process of magnetic separation, electromagnets or permanent magnets are used to extract sources [...]

Separator Magnets

Separator Magnets HSMAG engineers and manufactures magnetic pulleys, drums, suspended magnetic separators, and eddy-current separators designed for beneficiation, tramp iron removal, non-ferrous metal recovery and various other separation processing applications. HSMAG offers permanent and electromagnetic designs with the option of self-cleaning or manual-cleaning features. Complete systems can be designed into new separation facilities or incorporated [...]

An Efficient and Optimal Moving Magnet Actuator for Active Vibration Control

An Efficient and Optimal Moving Magnet Actuator for Active Vibration Control Abstract: The need for fuel economy and emission restriction has led OEMs to put emphasis on different strategies which allow effective improvements in that field (engine downsizing, cylinder deactivation …). These new applications imply significant vibration increase, created by the engine and transmitted to [...]

3D electromagnetic analysis and experimental verification of multi-pole magnetization BLDC motor

3D electromagnetic analysis and experimental verification of multi-pole magnetization BLDC motor ABSTRACT This paper presents a quasi-3D electromagnetic analysis of the multi-pole magnetization BLDC motor. The permanent magnet (PM) of a multi-pole magnetization BLDC motor has several poles in a magnet. The polar separation section of the multi-pole PM is implemented through the magnetization pattern [...]

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 [...]

Hands-on Electromagnetic Experiments and Electromagnet FAQ

Can't get enough of hands-on electromagnetic experiments? We have some more ideas for you to try: What is the magnetic power of a single coil wrapped around a nail? Of 10 turns of wire? Of 100 turns? Experiment with different numbers of turns and see what happens. One way to measure and compare a magnet's [...]

Electromagnets All Around Us

Electromagnets All Around Us Many electromagnets have an advantage over permanent magnets because they can be easily turned on and off, and increasing or decreasing the amount of electricity flowing around the core can control their strength. Modern technology relies heavily on electromagnets to store information using magnetic recording devices. When you save data to [...]

The History of Electromagnets

The History of Electromagnets The relationship between electricity and magnetism wasn’t thoroughly studied until 1873 when physicist James Maxwell observed the interaction between positive and negative electrical charges. Through continued experimentation, Maxwell determined that these charges can attract or repel each other based on their orientation. He was also the first to discover that magnets [...]

Principle of Magnet Attraction and Repulsion

Principle of Magnet Attraction and Repulsion Now that more and more people are using magnets, we want to start with some basic questions.How do magnets attract each other?How do they repel? The magnets written in middle school physics books have S poles and N poles. If the S poles or N poles of two magnets [...]

Working Principle of Magnetic Beads

Working Principle of Magnetic Beads The main raw material of the magnetic beads is ferrite. The ferrite is a cubic ferromagnetic material with a cubic lattice structure. The ferrite material is iron-magnesium alloy or iron-nickel alloy. Its manufacturing process and mechanical properties are similar to those of ceramics. The color is grayish black. One type [...]

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 [...]

Electromagnetic Induction

Electromagnetic Induction While Oersted’s surprising discovery of electromagnetism paved the way for more practical applications of electricity, it was Michael Faraday who gave us the key to the practical generation of electricity: electromagnetic induction. Faraday discovered that a voltage would be generated across a length of wire if that wire was exposed to a perpendicular [...]

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 [...]

Introduction About Speaker Magnets

Some Introduction About Speaker Magnets Speakers are a type of transducer which can transfer the electric signal to the acoustic signal. The sound quality of the speaker is largely depended on the speaker magnets. Speakers can be classified to internal magnetic type and external magnetic type according to the magnetic circuit structure. Speakers also can [...]

Some Permanent Magnets Keep the Entire World Running

Some Permanent Magnets that Keep the Entire World Running Rare earth or perpetual are made from components in the rare earth assembly of the occasional table of the components. While once acknowledged rare, these components have been discovered to be as normal as lead or tin. Be that as it may, their helpfulness in changeless [...]

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 [...]

Orientation Anisotropic Injection Magnets

Orientation Anisotropic Injection Magnets, Injection Magnets Orientation Technology Injection Bonded Anisotropic NdFeB Magnet The common molding technics of anisotropic ndfeb magnet are injection molding and compression molding. Two major application samples of anisotropic ndfeb magnet are sensor magnet and expansion valve. Injection bonded ndfeb sensor magnets made by HDDR ndfeb powder are widely used for [...]

Why can Magnets Absorb Iron?

Why can magnets absorb iron? Where does its energy come from? There is a magnetic field around the magnet. The magnetic field is a special kind of material. He stores the magnetic energy in the magnetic field. The magnet attracts iron because the iron also has small magnetic domains, which can be easily attracted by [...]

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 [...]

Magnetic Energy

Magnetic Energy - What if you walked out of your house and entered the car of the future, which looked like a donut? You push a button and the vehicle rises about a foot from the ground. A small thruster moves the vehicle forward as the vehicle follows an electromagnetic strip embedded in the road [...]

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