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词汇 samarskite
词源
samarskite; samarium. Russian engineer Col. M. von Sa- marski became one of the few men to have an element named after him, through an unusual set of circumstances. In 1857 a glasslike, velvet-black mineral was discovered in Russia and named samarskite in honor of this mine official. Twenty-two years later the scientist Lecoq de Boisbaudran found by means of the spectroscope that samarskite contained a new element. He named this samarium, after the mineral in which he dis- covered it. Thus the little-known engineer was commemorated, indirectly, in a way usually reserved for the famous. Samarium belongs to the rare-earth group and has little commercial im- portance, though it is used as a catalyst and in the ceramics industry. In about 1901 another element was discovered in sa- marskite, this called europium, after the continent.
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更新时间:2024/11/11 7:18:23