If you are trying to fix a screw in a hard to reach place or are working with small, fiddly screws a magnetised screwdriver can save you lots of time. Most new, high-end screwdrivers are supplied already magnetised, but sometimes they can lose their magnetism. There are a number of ways you can use magnets to remagnetise a screwdriver, or magnetise one that was never magnetised in the first place.
Magnets and medical research have a long and interconnected history. Life-saving diagnosis is made possible by MRI scanners that rely on the power of magnets, magnetic technology has a vital role in some of the most pioneering medical research and many believe in the opinion-splitting therapeutic benefits of magnets. This post will look at all three areas.
By understanding how an electric motor works you can learn a lot about magnetism and its relationship with electricity, and what better way to learn how a motor works than by building your own basic motor. But first, a little about the fundamentals of electricity and magnetism.
When we talk about magnetic levitation what we are referring to is an object suspended by magnetic pressure which counteracts the effects of gravity. It generates images of large futuristic objects hovering and travelling at high-speeds.
Neodymium magnets are the strongest in the world, that’s why they can be pricey. If you have an old hard drive, one you won’t ever need again, you can dismantle it to retrieve the neodymium magnets inside. Here I will give you a step-by-step guide for taking apart a computer hard drive.
Ordinarily, heat and electronics aren’t the best of companions; even less unsuited partners are heat and some magnetic materials! However, a new technology being developed by Seagate for the next generation of storage devices, known as ‘heat-assisted magnetic recording’ is breaking the convention. The technology is heralded as revolutionary and could significantly increase the amount of data that can be stored on a hard drive by increasing storage density.
Anyone working with or near magnets will have been made aware of the many health and safety warnings regarding magnets. One warning has always been that you must keep magnets away from computers, credit cards, and even your phone. So, do magnets pose a threat to phones and other modern technology? If so, what threats do they pose and how strong must a magnet be to damage a phone, and what parts of the device would be susceptible to damage? The whole idea can be traced back to older pieces... Read More