How Magnets Work You probably know that magnets attract specific metals and they have north and south poles. Opposite poles attract each other while like poles repel each other. Magnetic and electrical fields are related, and magnetism, along with gravity and strong and weak atomic forces, is one of the four fundamental forces in the [...]
Doctor, the child eat magnet, what should I do? "Doctor, the child has eaten the magnet, what should I do?" On the morning of May 18, a mother and child came to the Hengjie Town Health Center in Haishu District of Ningbo City. The 7-year-old child accidentally swallowed the magnet. It turned out that the [...]
What to do if you swallow a magnet If the magnet is swallowed in the stomach, if the general condition is good and there are no related symptoms, it can be temporarily observed; if it cannot be discharged, cathartics can be taken orally, or the foreign body can be removed directly under the endoscope. 1. [...]
Why can't small magnets be put together with big magnets? There is no such requirement, that is to say, this statement is wrong. Farewell and small magnets can be stored together. During their storage, the magnetic attraction force of the large magnet will not be separated from that of the small magnet. The weakening of [...]
Magnet Myths Every time you use a computer, you're using magnets. If your home has a doorbell, it probably uses an electromagnet to drive a noisemaker. Magnets are also vital components in CRT televisions, speakers, microphones, generators, transformers, electric motors, burglar alarms, cassette tapes, compasses and car speedometers. In addition to their practical uses, magnets [...]
Why Magnets Stick If you've read How Electromagnets Work, you know that an electrical current moving through a wire creates a magnetic field. Moving electrical charges are responsible for the magnetic field in permanent magnets as well. But a magnet's field doesn't come from a large current traveling through a wire — it comes from [...]
The Details of Making Magnets To make a permanent magnet, all you have to do is encourage the magnetic domains in a piece of metal to point in the same direction. That's what happens when you rub a needle with a magnet — the exposure to the magnetic field encourages the domains to align. Other [...]
Magnetic 3D Mapping System HS Magnetics utilizes various custom designed testing machines for magnetic measurements. Below are two magnetic mapping systems outlined with descriptions as a combination of our engineering solutions. Magnetic field mappers measures the field magnitude and direction over a predetermined range of positions. These measurements are made by accurately positioning a collection [...]
Permanent Magnets in Electric Vehicles, Permanent Magnetics in Electric Vehicles EV Motors and permanent magnets Rare-Earth magnets are higher in cost than copper windings, making the option of using a magnet-less AC induction or brushed DC motor attractive. Many applications (vacuum cleaners, mixers, hair dryers, most home fans, etc) will opt for the less expensive [...]
How strong is a 12000 Gauss magnet? Long answer: 12000 gauss = 1.2 tesla. If that’s a rare earth magnet, NdFeB, it’s about an N35. State of the art 15 years ago but now N48 is the garden variety and you can pay a little more and get up to N56 in quantity. B field [...]
Understanding Magnet Grades and Magnet Tables Each day we get asked questions about the differences in magnetic materials. Neodymium Magnets, Samarium Cobalt (SmCo) Magnets, Ceramic Magnets, Alnico Magnets, Bonded Magnets, and Injection Molded Magnets all have various options, and choosing the correct grade for your application is critical. This article will try to simplify how [...]
Do Magnet Coating Affect Magnet Strength? Some customers ask whether the magnet coating will affect its magnetic strength from time to time? How big is the impact? Let's talk about this topic today. This is indeed an important factor to be considered. Although the distance of one or two millimeters between the magnet and another [...]
What Are Neodymium Speakers? Neodymium is an element with specific characteristics that make it particularly well suited for use in speakerconstruction. Speakers operate by using a magnetic field to generate motion in a coil and speaker cone to project an amplified sound signal. In neodymium speakers, the rare-earth element is used as the primary material [...]
A Closer Look at Rare Earth Permanent Magnets Rare earth magnets have gotten a lot of coverage in the EV press over the years for being expensive – especially back in 2011 when a supply disruption in China sent the prices up anywhere from fivefold for neodymium to 20-fold for dysprosium over the course of [...]
Neodymium Speaker Magnets Explained In this article, you will meet a component that perhaps doesn’t get the exposure that it should – the magnet. While each speaker driver is made up of two magnets – an electromagnet and a natural/permanent magnet – the focus will primarily be on the latter. To reproduce sound through a [...]
Humid Environment Magnet Coatings In high humidity atmospheric conditions, standard nickel-coated Neodymium magnets will eventually succumb to corrosion and over time will stop performing at an acceptable level. Ferrite or Samarium Cobalt magnets may be viable alternatives. Ferrites and Samarium Cobalt magnets have excellent resistance to corrosion and will largely remain unaffected by moisture and [...]
Magnet in Singapore Magnet in Singapore (Neodymium) A magnet is fun. Check out the various magnetic product that you can get in Singapore. Where can you buy “Neodymium” magnet in Singapore? Neodymium magnet also known as NEO magnet has a very strong magnet strength. The bigger it is, the more magnetic strength it has. Handle [...]
Samarium Cobalt vs Neodymium Magnets Samarium Cobalt magnets and Neodymium Iron Boron magnets are important Rare Earth Magnets. Many people want to understand how to use them, so we wrote this guide. Here we break down the important similarities and differences so you can quickly decide which is right for your application. Samarium Cobalt [...]
Cochlear Implant (CI) Magnet The purpose of the cochlear (COKE le ar) implant (CI) magnet is to hold the headpiece (coil) in place to transmit sound to the internal device. The entire device has 4 parts: the magnet, headpiece (coil), cable and processor. The CI magnet portion is about the size of a dime. Before [...]
Magnets, with the right maintenance and care, can last indefinitely. For information on how to look after your magnet, here are a few tips: Storage Storing a magnet correctly is one of the most important ways in which you can give your magnet a long life. All magnets can be stored together in one place, [...]
The strength of a magnet is indicated by either its pull force or its magnetic field strength. A magnet's strength is always stated in the product information for a magnet, however manufacturers use the following methods to discern this: Pull force The pull force of a magnet is the amount of force required to pull [...]
Magnets measured and graded for strength, quality, etc. here you can learn about it, thanks. Magnets measured and graded Magnet Strength Measurements (B)--The units for measuring the field strength (flux density) of a magnet are Gauss or Tesla. 1 Tesla = 10,000 Gauss. The Earth's magnetic field is on the order of 1 [...]
A magnet is any object that produces its own magnetic field. The magnet strength of these objects can vary from imperceptibly weak fields to incredibly strong fields, depending on a number of characteristics. Magnets can be classed into two distinct groups: permanent magnets and electromagnets, and non-magnets can be defined as either ferromagnetic, paramagnetic, or [...]
Multiply the magnetic field strength of a refrigerator magnet by 2 million and you'll be in the ballpark of the strength of the magnet that researchers at the National High Magnetic Field Laboratory, based near Florida State University in Tallahassee, are trying to create. When completed later this year, the pulsed electromagnet, located at the [...]
What Happens When a Magnet is Heated ？ Magnets can be found in many everyday items and technologies such as cars, phones and computers. It is because of permanent magnets' ability to create their own magnetic field that they are useful in various products and situations. However, they are not impervious. Magnet strength can be [...]
