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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 Conical coordinates ： ウィキペディア英語版 Conical coordinates Conical coordinates are a three-dimensional orthogonal coordinate system consisting of concentric spheres (described by their radius $r$) and by two families of perpendicular cones, aligned along the ''z''- and ''x''-axes, respectively. ==Basic definitions== The conical coordinates $(r,\; \backslash mu,\; \backslash nu)$ are defined by :$$ x = \frac :$$ y = \frac \sqrt \right) \left( \nu^ - b^ \right)} \right)} } :$$ z = \frac \sqrt \right) \left( \nu^ - c^ \right)} \right)} } with the following limitations on the coordinates :$$ \nu^ < c^ < \mu^ < b^ Surfaces of constant $r$ are spheres of that radius centered on the origin :$$ x^ + y^ + z^ = r^ whereas surfaces of constant $\backslash mu$ and $\backslash nu$ are mutually perpendicular cones :$$ \frac} + \frac + b^} + \frac - c^} = 0 :$$ \frac} + \frac - b^} + \frac + c^} = 0 In this coordinate system, both Laplace's equation and the Helmholtz equation are separable. 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「Conical coordinates」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.