29.01.2010 - In praise of heavy metals
From Theglobeandmail.com: You probably aren’t familiar with the element europium, but if you have a new plasma TV, the metal gives you the colour blue. Europium is one of 16 elements called rare earths that are needed to make components of many leading-edge products. The battery pack inside Toyota’s Prius hybrid requires up to 15 kilos of lanthanum. Energy-saving bulbs are made with rare-earth phosphors. Computer hard drives and many wind turbines couldn’t function without neodymium magnets.......................................Full Article: Source
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