
Demand for magnets in our everyday life.
Throughout the day, you many times encounter magnets usually without realizing it. They play an essential role in a wide range of accessories, from ordinary children's puzzles, headphones and speakers or credit cards to complex machines such as instrument for magnetic resonance imaging. The size of magnets varies from just visible dots to factory beasts weighing tons. The aforementioned large ones are clearly perceptible, the tiny ones often tucked away within various tools of household, office, medical, or commercial use, performing their unique function in silence and becoming at the same time completely unseen.
Electronics and magnets.
In computers magnets are utilized for recording data, for example, on hard drives. Magnets change the position of magnetic substance on the data carrier in segments, which thereafter present binary data. Later the computer recognizes the course from each segment of magnetic material and decodes them into data recognizable to the average user. In tiny speakers , which are found in laptops, televisions as well as radios also magnets are used in magnets. Situated in the speaker, a wired coil and magnet change electronic signals into sound vibrations.
Electric energy , and also subsequent industries.
Magnets provide us with a broad repertoire of implementations in many fields of industry. In electric generators, they exchange mechanical energy into electricity, while electric motors exploit magnets to change electric energy again into mechanical energy. During recycling, electromagnets in cranes grab as well as move big pieces of metal, sometimes weighing thousands of kilograms. Mines use magnetic separators to isolate necessary metal ores from broken rock. In food processing, such magnetic separators exclude minuscule elements of metal from cereals and remaining granular or liquid food goods. Cattle farmers employ magnets to capture bits of metal that cows are able to ingest while grazing. A cow swallows the magnet along with its feed. It's definitely not a joke. As the magnet moves through the animal's organism, it captures small pieces of metal.
Health and medicine at home and work.
Magnets are found in certain commonly applied medical devices, such as magnetic resonance imaging machines. They use a powerful magnetic field to obtain a radar radio signal from inside the body, employing the signal to create a clear, detailed view of bones, organs, and other tissues. The magnet in such devices is extremely strong - thousands of times stronger than ordinary kitchen magnets. Another medical application of magnets is the treatment of tumors. The physician administers a magnetically sensitive solution into the tumor region and then uses a strong magnet to generate thermal energy in the contaminated area. The high temperature eliminates cancer cells without damage to healthy tissues.
According to the president of the Polish Radiological Medical Society, the number of radiology specialists is currently insufficient. This field is rapidly developing and opens wide perspectives, so for those deciding on this profession, it is a quite far-sighted step. The demand for these specialists is growing in the job market, especially in the capital.
Jobs in Warsaw both in performing magnetic resonance imaging and in other positions in this field can be found on the Jooble job search engine page.
What can you do with a magnet and a battery?
With a magnet and a battery, you can build a simple homopolar motor. This type of direct current electric motor uses the principle of continuously cutting magnetic field lines with a conductor. In a homopolar motor, the conductor rotates around a fixed axis, being positioned perpendicular to a static magnetic field. As the force acting on the conductor is continuous and always directed in one direction, the motor does not require a commutator, but still needs slip rings. 'Homopolar' means that the electrical polarization of the conductor and the magnetic poles do not change, which means there is no need for commutation.
Want to do an amazing science project at home? Build your own homopolar motor! It's simple and a great way to demonstrate how electric current interacts with a magnetic field. Here's what you'll need:
Neodymium magnet: This is a very strong type of magnet that is key to the project. You can find it in electronic stores or online. For example, you can use a magnet with the product code MW 12x6 / N38 - cylindrical magnet, which is available from us or MW 12x4 / N38 - cylindrical magnet.
Battery: A standard AA or AAA battery will be perfect. Make sure it's new to have full voltage.
Copper wire: It must be clean and well-conducting. Copper wire can be found in an electronics store or you can recover it from unnecessary electronic cables.
Once you have gathered all the materials, bend the copper wire into a shape that allows it to rotate around the battery - it can be a simple 'U' shape or a spiral. Then place the neodymium magnet at one end of the battery, and position the bent ends of the wire so that one touches the magnet and the other directly touches the battery.
When you complete the assembly, the wire will start to rotate! You can experiment by changing the shape of the wire or using batteries of different voltages to see how it affects the speed of the motor's rotation. This is a fantastic way to learn through fun and experimentation.
Remember only to be cautious – neodymium magnets are very strong and should not be placed near electronic devices and magnetic media like credit cards or hard drives.
The strongest magnets, made from a mixture of neodymium, boron, and nickel, are known for their impressive pulling force, making them an ideal tool not only for industry but also for home applications. Whether it's for extracting tiny metal filings from an eye or searching for a lost needle in a haystack - our magnets are indispensable. We offer three main categories of neodymium magnets: cylindrical magnets, lamellar magnets, and annular magnets, each tailored to specific needs and applications. We invite you to explore our offer and discover how neodymium magnets can make your daily life easier.
In a house where magnets are used?
Probably it might be not noticeable, to you, but in a most homes you will find many magnets. Magnets on refrigerators keep papers, bottle openers as well as other minuscule items suspended on typically metal refrigerator doors. A pocket compass uses a magnetic needle to determine the way north. The black magnetic strip on the back of a credit card collects personal details in the identical, technologically speaking, way, as a hard disk in a computer. Hoovers, blenders as well as washing machines utilize electric motors, which function thanks to the use of a magnet. Magnets can be found in phones, alarms also in children's toys. The world surrounding us is full of magnets.
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czwartek 2022-12-29T18:00:00
