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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 Capillary length ： ウィキペディア英語版 Capillary length In fluid mechanics, capillary length is a characteristic length scale for an interface between two fluids which is subject both to gravitational acceleration and to a surface force due to surface tension in the interface. The capillary length is defined as:〔G.K. Batchelor, 'An Introduction To Fluid Dynamics', Cambridge University Press (1967)〕 :$\backslash lambda\_\; =\; \backslash sqrt\}$, where $g$ is the gravitational acceleration and $\backslash rho$ is the density of the fluid, and $\backslash gamma$ is the surface tension of the fluid-fluid interface. *For clean water and air at standard temperature and pressure, the capillary length is around 2 mm. *For a soap bubble in air, the capillary length is around 4 meters (13 feet). A capillary surface that has a characteristic length smaller than the capillary length can be considered a low Bond number surface. A sessile drop whose largest dimension is smaller than the capillary length, for example, will take the shape of spherical cap, which is the solution to the Young-Laplace equation with gravity completely absent. ==See also== * Surface tension * Young-Laplace equation * Capillarity 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「Capillary length」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.