
Utilizations of magnets in our daily life.
Throughout the day, you many times encounter magnets usually without realizing it. They play an essential role in a wide family of accessories, from common plush toys, computers or credit cards to complex machines such as device for magnetic resonance imaging. The size of magnets varies from barely perceptible spots to industrial giants weighing tons. Those huge ones are very noticeable, the small ones usually hidden within diverse devices of household, office, medical, or commercial use, doing their unique work in silence and remaining at the same time completely unseen.
Computers and electronics.
In laptops magnets are utilized for recording data, for example, on memory devices. Magnets modify the direction of magnetic material on the data carrier in segments, which then represent binary data. Later the computer interprets the course from each segment of magnetic material and processes them into data readable to the average user. In small speakers , which are found in laptops, televisions and radios too use magnets. Mounted in the speaker, a coiled copper insulated wire coil and magnet transform electronic signals into sound vibrations.
Magnets are everywhere.
Magnets provide us with a broad array of implementations in the world of industry. In electric generators, they transform mechanical energy into electricity, while electric motors employ magnets to transform electric energy again into mechanical energy. During recycling, electromagnets in cranes catch or transfer heavy elements of metal, some of which weighing thousands of kilograms. Mines employ magnetic separators to clean valuable metal ores from pulverized rock. In food processing, such magnetic separators exclude minuscule elements of metal from cereals as well as other fine-grained or liquid food items. Farmers raising cattle use magnets to capture fragments of metal that cows are able to ingest in the pasture. A cow eats the magnet together with food. It's absolutely not a jest. As the magnet travels through the animal's digestive system, it catches small pieces of metal.
Health and medicine at work and home.
Magnets are found in specific commonly used medical devices, such as magnetic resonance imaging machines. They employ a intense magnetic field to produce a radar radio signal from inside the body, exploiting the signal to compile a clear, precise view of bones, organs, and remaining tissues. The magnet in such devices is extremely intense - thousands of times more powerful than ordinary household magnets. Another therapeutic use of magnets is the treatment of tumors. The doctor administers a magnetically sensitive solution into the tumor zone and then employs a strong magnet to release thermal energy in the affected area. The thermal energy eliminates cancer cells without loss 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.
Magnet in household use?
Although it most likely is not noticeable, to you, but in a regular home you will find magnets magnets. Fridge magnets support papers, bottle openers and other tiny objects attached on typically metal refrigerator doors. A pocket compass employs a magnetic needle to indicate the direction north. The black magnetic strip on the reverse side of a credit card stores information in the identical way, as a hard disk in a computer. Hoovers, food processors also washing machines have electric motors, which function thanks to the application of a magnet. Magnets can be found in phones, alarms also in children's toys. The world surrounding us is filled with magnets.
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czwartek 2022-12-29T18:00:00
