Home, Shop & Industry Uses
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Magnetic Tape Could Make a Comeback
Cassette tapes may have the stigma of small outdated music collections, but a magnetic innovation announced in 2014 hinted at a comeback for tape in data storage. Update: tape is still widely used for archiving, and current LTO-10 cartridges hold up to 40 TB native (100 TB compressed). The relationship between magnets and cassette tapes may not be immediately apparent, but it is actually magnetic tape that serves as the foundation for its data storage. Continue reading → -
The Technology Behind the Magnetic Levitation Train
You may have heard of Japan’s Maglev Train-also known as the fastest floating train in the world, with a test-run record of 375 miles per hour (603 km/h) set in 2015 and a planned passenger speed of about 310 miles per hour. So far, maglev trains carry passengers in only a few countries, including China and Japan (where the high-speed Chuo Shinkansen line is still under construction and has not opened), but 2014 reports suggested that the impressive floating train technology could make its way to the U.S. Continue reading → -
Mini Magnetic Robots May Revolutionize Manufacturing
These microrobots could be mistaken for tiny insects because they are so small, but don’t let their size fool you. The research organization SRI International has been working on their magnetic mini-robot technology called Diamagnetic Micro Manipulation for DARPA’s Open Manufacturing Program. According to Wired, Darpa’s vision is to use the bots to "lower the cost and speed the delivery of high-quality manufactured goods". Continue reading → -
Project Ara: A Modular Smartphone Using Electro-Permanent Magnets
Editor's note: this is a 2014 post kept for the archive. Google suspended Project Ara in September 2016, so the phone was never released. When we first wrote this, one of the hot topics that week was Project Ara. It was a modular smartphone project, announced by Google, that could be customized and updated using electro-permanent magnets. Google discontinued the project in 2016. If you haven’t heard about the project yet, it could entirely change the way we update our smartphones. Instead of buying a phone every few years, Project Ara phone’s modular units allow owners to replace and upgrade parts as needed. The smartphone fosters user customization and could possibly reduce the record 62 million tonnes of e-waste generated worldwide in 2022 (UN Global E-waste Monitor 2024). Continue reading → -
Weird Magnet Fact of the Week: Magnets are Brakes on Amusement Rides
Magnets don’t just go on your fridge. In fact, magnets are in many technical, real-world applications. For example, magnets are used in amusement parks all over the world and in roller coasters as braking mechanisms. The neat part about magnetic brakes is that magnets do not require electrical power and if the power stops, the brakes won’t be affected. Continue reading →