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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 Physautotype ： ウィキペディア英語版 Physautotype The physautotype (in French, ''physautotypie'') was a photographic process, invented by Joseph Nicéphore Niépce and Louis Daguerre in 1832, in which images were produced by the use of lavender oil residue dissolved in alcohol as the photographic agent. The solution was coated onto a metal or glass plate and allowed to dry, after which it had a powdery white appearance. The plate was then exposed in a camera obscura for several hours and developed with solvent vapors, which caused the least strongly exposed areas to become proportionally more transparent, creating a photographic image that was positive when viewed against a darker background. The results were reportedly not durable, tending to become entirely transparent over time even if kept in the dark, but additional chemical processing to proportionally etch or darken the underlying surface could be used to "fix" the image. ==References== * (Art & Architecture Thesaurus, s.v. "physautotypes" ). Accessed 10 December 2007. 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「Physautotype」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.