Magnetic Domains In ferromagnetic materials, smaller groups of atoms band together into areas called domains, in which all the electrons have the same magnetic orientation. That's why you can magnetize them. See how it works in this tutorial. Electrons are teeny tiny magnets. They have a north and a south pole and spin around an [...]
How are magnets made? More than 20 years of doubts have finally been solved Magnets, we remember deeply when we were young, it is a magical thing. After class, I played a magnet fight in the classroom. Two magnetic fighters each took a magnet and placed it on both sides of the center line at [...]
A girl swallowed toy magnet by mistake, and the doctor took it out smoothly 10 days ago, a 7-year-old girl Jiajia (pseudonym) accidentally put 2 toy magnets into her esophagus while playing with her classmates, and then she vomited and cried uneasy. , and then went to the Second Department of General Surgery of our [...]
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 [...]
The Basics of Making Magnets Many of today's electronic devices require magnets to function. This reliance on magnets is relatively recent, primarily because most modern devices require magnets that are stronger than the ones found in nature. Lodestone, a form of magnetite, is the strongest naturally occurring magnet. It can attract small objects, like paper [...]
Magnetics for Environmental Applications Magnetics, as related to the environmental field, is a technology used for locating subsurface iron, nickel, cobalt and their alloys which are typically referred to as ferrous materials. The theory of magnetics has been adapted to specialized tools called magnetometers which are capable of measuring ambient magnetic fields emanating from terrestrial [...]
"Bite hand" magnet ring jams student's finger The "biting hand" magnet ring stuck the student's finger, and Hubei Xianning fire department quickly removed it in 2 minutes On December 3, the left middle finger of a student of Chibi No. 1 Junior High School in Xianning City, Hubei Province was caught by a magnet ring. [...]
Researchers Develop New Method to 3D Print Magnets Teams from the Jean Lamour Institute (IJL), the Materials Science research laboratory of the University of Lorraine, have developed a method for producing magnets with a desktop FDM 3D printer. The researchers claim to have succeeded in integrating magnetic properties into various 3D printed parts, all without [...]
3D-printed magnets help create more efficient electric motors Upscaling the production of new 3D-printed rare earth permanent magnets VTT Technical Research Centre of Finland is leading a European consortium 3DREMAG which is developing a new material suitable for 3D printing of permanent magnets, which can be utilised in electric and hybrid vehicle motors. 3DREMAG is [...]
3D-printed permanent magnets outperform conventional versions conserve rare materials Researchers at the Department of Energy's Oak Ridge National Laboratory have demonstrated that permanent magnets produced by additive manufacturing can outperform bonded magnets made using traditional techniques while conserving critical materials. Scientists fabricated isotropic, near-net-shape, neodymium-iron-boron (NdFeB) bonded magnets at DOE's Manufacturing Demonstration Facility at ORNL [...]
Some Background Information About Neodymium Magnets Rare Earth “Neodymium magnets are a member of the Rare Earth magnet family and are the most powerful permanent magnets in the world. They are also referred to as NdFeB magnets, or NIB, because they are composed mainly of Neodymium (Nd), Iron (Fe) and Boron (B). They are a [...]
Meteorites, Magnets, and Metal Detecting I’ve probably been watching too much “Meteorite Men” on the Science Channel. I’m starting to see little rusty rocks everywhere I go, and since I visit a lot of gravel bars in the course of rockhounding and gold prospecting, I’m getting nervous that I’ve passed over a valuable piece of [...]
SCIENTISTS PLAN A MAGNETIC FISHING TRIP TO FIND A METEOR In 2014, the first known meteor from outside of our Solar System crashed into the ocean near Papua New Guinea. It was one and a half feet wide, but broke up into smaller fragments. Scientists will attempt to bring pieces about 0.1 millimeter (about the [...]
Astronomers want to use magnets to salvage underwater meteorites Astronomers plan to use a mattress-sized magnet to salvage meteorites from the ocean, according to a report on the website of Popular Mechanics on August 18. On January 8, 2014, a meteor exploded over the Pacific Ocean north of Papua New Guinea at a speed of [...]
President Biden has decided not to restrict imports of ndfeb magnets. The US "Political News Network" said that the neodymium magnets imported by the United States mainly come from China, and Biden's decision avoided a new trade war between the United States and China and other economies. According to a report by the "Political News [...]
Oxygen from the moon! China has achieved breakthrough results If one day we could actually live on the moon, what would be the most important thing? Yes, it is oxygen. "Produce the first mouthful of oxygen for the Chinese on the moon as soon as possible", this is the mouth of Guo Linli, a researcher [...]
Study finds magnets could solve oxygen supply problems for astronauts during long-term space travel A team of experts from the University of Warwick has demonstrated a new method for producing oxygen in microgravity conditions that involves magnets. Magnets are used to attract gas bubbles to condense in an area, making it easier to harvest them [...]
The world's strongest magnet will be shipped to France to assemble an "artificial sun" that can suck aircraft carriers off the ground The International Thermonuclear Experimental Reactor (ITER) project said recently that the world's strongest magnet has been manufactured for ten years and is ready to be shipped to France to assemble an "artificial sun" [...]
Can magnetic lock without keyhole cry a thief? A magnet can be easily cracked A magnetic lock without a keyhole claims to make it impossible for thieves to start, and can only be opened by attaching a matching, magnetic key to the lock body. Recently, this lock with a unique appearance and a tall name [...]
