Rare earth” refers to a collection of 17 elements from the periodic table, with Star Trek-sounding names like holmium, europium, neodymium, and thulium. They tend to be found together, and exhibit similar chemical properties that make them useful — and in many cases vital — for a whole host of high-tech applications, such as superconductors, magnets, and lasers. Rare earths are essential ingredients in many emerging “green” technologies, including wind turbines and batteries for electric cars. A lot of advanced U.S. military hardware, including tank navigation and naval radar systems, also depends on rare earth-based components. Overall an useful summary. Many thanks to Patrick Chovanex.
Useful link:
http://chovanec.wordpress.com
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