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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Wollaston wire ： ウィキペディア英語版 Wollaston wire Wollaston wire is a very fine (less than .01 mm thick) platinum wire clad in silver and used in electrical instruments. For most uses, the silver cladding is etched away by acid to expose the platinum core. == History == The wire is named after its inventor, William Hyde Wollaston, who first produced it in England in the early 19th century.〔(''William Hyde Wollaston: Research in Physics, Chemistry and Physiology'' ), Carl Zeiss AG, Germany, accessed 2009-07-09〕 Platinum wire is drawn through successively smaller dies until it is about in diameter. It is then embedded in the middle of a silver wire having a diameter of about . This composite wire is then drawn until the silver wire has a diameter of about , causing the embedded platinum wire to be reduced by the same 50:1 ratio to a final diameter of . Removal of the silver coating with an acid bath leaves the fine platinum wire as a product of the process. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Wollaston wire」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.