Electronics and magnets.

In laptops magnets are utilized for recording information, for example, on memory cards. Magnets transform the position of magnetic substance on the data carrier in segments, which thereafter depict binary data. Subsequently the computer interprets the course from all the recorded segments of magnetic material and processes them into data understandable to the ordinary user. In miniature speakers located in laptops, televisions and radios too employ magnets. Mounted in the speaker, a wire coil and magnet transform electronic signals into sound vibrations.

Magnets are everywhere.

Magnets demonstrate a broad repertoire of implementations in the world of industry. In electric generators, they exchange mechanical energy into electricity, at the same time electric motors use magnets to transform electrical energy in reverse into mechanical energy. During recycling, electromagnets in hoists grab and transfer large segments of metal, some of which weigh thousands of kilograms. Mines employ magnetic separators to isolate necessary metal ores from pulverized rock. In food processing, such magnetic separators exclude tiny fragments of metal from seeds and various powdery possibly liquid food goods. Farmers raising cattle employ magnets to pick out bits of metal that cows might ingest in feed. A cow eats the magnet along with its feed. It's certainly not a joke. As the magnet travels through the animal's digestive tract, it picks up small pieces of metal.

Health and medicine at work and home.

Magnets are found in some commonly used medical devices, such as magnetic resonance imaging machines. They use a powerful magnetic field to produce a radar radio signal from inside the body, employing the signal to form a perfect, complete picture of bones, organs, and other tissues. The magnet in such devices is extremely intense - thousands of times more powerful than ordinary kitchen magnets. Another medical purpose of magnets is the treatment of tumors. The specialist administers a magnetically sensitive fluid into the tumor area and then employs a powerful magnet to produce thermal energy in the infected area. The heat 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 - neodymium magnet, which is available from us or MW 12x4 / N38 - neodymium 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 may be not obvious, to you, but in a regular home you can encounter a lot of magnets. Magnets on refrigerators hold papers, bottle openers as well as personal small items attached on typically metal refrigerator doors. A handy compass uses a magnetic needle to show the way north. The dark magnetic strip on the back of a credit card collects data in the same, technologically speaking, way, as a hard disk in a computer. Hoovers, blenders and washing machines utilize electric motors, which operate thanks to the employment of a magnet. Magnets operate in phones, alarms also in children's toys. The world around us is filled with magnets.