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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 Effective potential ： ウィキペディア英語版 Effective potential The effective potential (also known as effective potential energy) is a mathematical expression combining multiple (perhaps opposing) effects into a single potential. In classical mechanics it is defined as the sum of the 'opposing' centrifugal potential energy with the potential energy of a dynamical system. It is commonly used in calculating the orbits of planets (both Newtonian and relativistic) and in semi-classical atomic calculations, and often allows problems to be reduced to fewer dimensions. ==Definition== The effective potential $U\_\backslash text$ is defined in the following way: $U\_\backslash text(\backslash mathbf)\; =\; \backslash frac\; +\; U(\backslash mathbf)$ :''L'' is the angular momentum :''r'' is the distance between the two masses :''m'' is the mass of the orbiting body :''U(r)'' is the general form of the potential The effective force, then, is the negative gradient of the effective potential: $\backslash begin$ \mathbf_\text &= -\nabla U_\text(\mathbf) \\ &= \frac\hat) \end Where $\backslash hat\{\backslash mathbf\{r\}\}$ denotes a unit vector in the radial direction. 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「Effective potential」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.