Magnetism has some simple, practical uses. For example, junkyards use electromagnets (huge magnets that can be switched on and off with electricity) to pick up and move around piles of metal scrap. Photo: Magnets—the technology behind hard drives really is this simple!
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while others claim they can last 10 to 20 years or even indefinitely. Since floppy disks utilise magnetic storage (like tape), it's safe to say that eventually the magnetism will wear out around the same time a tape's would (10 to 20 years). ...
Do copper bracelets work for anxiety? Currently,there have not been any scientific studies on using magnetic wristbands for anxiety. However, there are studies on the use of magnetism that show it may have a beneficial effect on circulation, inflammation, pain levels, and more. Researchers are n...
Sunlight contains both heat and light: it's a mixture of different kinds of electromagnetic radiation, made up of vibrating waves of electricity and magnetism, that zip along in straight lines at 300,000 km (186,000 miles) per second. Our eyes can see only a very small, very limited ...
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