The Exciting World of Magnets: From Surgery to Space

The Exciting World of Magnets: From Surgery to Space

10 May 2024 By Johnber

NewsTogether

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 Surgeons at the Cleveland Clinic, a big hospital, use special magnets to help them do surgeries. These magnets help them grab and move things inside the body without making big cuts. They use a robot to move these magnets around, which makes the surgery easier and safer. Magnets are not just for sticking notes on fridges anymore. They are used in many modern things like electric cars and windmills, which help us use less oil and gas. But, creating these powerful magnets can be dirty because it involves mining, which is not good for our planet. Right now, a country called China makes most of these magnets.

 

  People are working on making cleaner and better magnets in other places too. For example, a company called Bunting Magnetics in the UK makes all sorts of magnets for different things like helping people hear better with cochlear implants or stopping rollercoasters safely. Magnets have gotten stronger over the years. This means we can make smaller magnets that do the same job, which is really helpful for things like electric cars. The stronger the magnet, the better these cars run, and they even weigh less! Some companies in the USA are trying to make magnets without using the rare earth elements from mining. They use iron and nitrogen instead, which could be better for the environment. One company, Niron Magnetics, is making these new kinds of magnets. They think they can make even stronger magnets soon.

 

  We can also recycle old magnets from used electronics and motors, which is much better for the environment than digging up new materials. In the UK, a company called HyProMag is working on making new magnets from old ones, and another company in the USA, Noveon Magnetics, is doing something similar. Even though it's tough to compete with China in magnet production, these efforts to make and recycle magnets in cleaner ways are important. As we get better at recycling and making new kinds of magnets, it helps our planet and keeps our technology running smoothly.

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Connecting School

1. Magnetic Poles

Every magnet has at least two poles: a north pole and a south pole. These are the points on the magnet where the magnetic force is strongest. If you cut a magnet in half, each piece will still have a north and a south pole; you cannot have a magnet with only one pole.

2. Attraction and Repulsion

Magnets exhibit the unique ability to attract certain types of metals, such as iron, nickel, and cobalt. They can also attract or repel other magnets. Opposite poles (north and south) attract each other, while like poles (north and north, or south and south) repel each other.

3. Magnetic Field

Around every magnet, there is an invisible area of magnetic force called a magnetic field. This field exerts a force on other magnets and magnetic materials in the field. The strength of the magnetic field decreases with distance from the magnet. Magnetic field lines emerge from the north pole and enter the south pole, forming continuous loops.

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Keywords

1. surgeons: doctors who perform operations.
2. magnets: objects that can attract or repel certain metals, especially iron.
3. robot: a machine programmed by a computer, which can perform complex tasks automatically.
4. mining: the process of digging in the earth to extract minerals or other valuable materials.
5. cochlear implants: small electronic devices that can help provide a sense of sound to a person who is profoundly deaf or severely hard of hearing.
6. electric cars: vehicles that are powered by electricity instead of gasoline or diesel.
7. windmills: structures that convert wind energy into other forms of energy like electrical power.
8. rare earth elements: a group of 17 metals used in many high-tech devices for their special magnetic and conductive properties.
9. recycle: the process of collecting and processing materials that would otherwise be thrown away as trash and turning them into new products.
10. environment: the natural world, as a whole or in a particular geographical area, especially as affected by human activity.

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