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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 sound energy ： ウィキペディア英語版 sound energy Sound energy is a form of energy associated with the vibration. of matter. The SI unit of sound energy is the joule (J). Sound is a mechanical wave and as such consists physically in oscillatory elastic compression and in oscillatory displacement of a fluid. Therefore, the medium acts as storage for both potential and kinetic energy as well.〔 〕 Consequently, the sound energy in a volume of interest is defined as the sum of the potential and kinetic energy densities integrated over that volume: :$W\; =\; W\_\backslash mathrm\; +\; W\_\backslash mathrm\; =\; \backslash int\_V\; \backslash frac\backslash ,\; \backslash mathrmV\; +\; \backslash int\_V\; \backslash frac\backslash ,\; \backslash mathrmV,$ where *''V'' is the volume of interest; *''p'' is the sound pressure; *''v'' is the particle velocity; *''ρ''0 is the density of the medium without sound present; *''ρ'' is the local density of the medium; *''c'' is the speed of sound. ==See also== *Sound energy density level 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「sound energy」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.