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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 Phase change (waves) ： ウィキペディア英語版 Phase change (waves) A phase change or phase shift is a change in the phase of a wave. ==Optics== Light waves change phase by 180 degrees when they reflect from the surface of a medium with higher refractive index than that of the medium in which they are travelling.〔http://hyperphysics.phy-astr.gsu.edu/hbase/phyopt/interf.html〕 A light wave travelling in air that is reflected by a glass barrier will undergo a 180 degree phase change, while light travelling in glass ''will not'' undergo a phase change if it is reflected by a boundary with air. For this reason, optical boundaries are normally specified as an ordered pair (air-glass, glass-air); indicating which material the light is moving out of, and in to, respectively. The phase changes that take place upon reflection play an important part in thin film interference. 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「Phase change (waves)」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.