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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 Lorentz–Lorenz equation ： ウィキペディア英語版 Lorentz–Lorenz equation The Lorentz–Lorenz equation, also known as the Clausius–Mossotti relation and Maxwell's formula, relates the refractive index of a substance to its polarizability. The most general form of the Lorentz–Lorenz equation is :$\backslash frac\; =\; \backslash frac\; N\; \backslash alpha,$ where $n$ is the refractive index, $N$ is the number of molecules per unit volume, and $\backslash alpha$ is the mean polarizability. This equation is only valid for certain crystal structures.〔Introduction to Solid State Physics/Charles Kittel. - 7th ed. (ISBN 0-471-11181-3) Chapter 13, or 8th ed. (ISBN 0-471-41526-X) p. 464〕〔D. E. Aspnes, Am. J. Phys. 50, 704 (1982)〕 A more specialized form of the Lorentz–Lorenz equation gives the refractive index $n$ of a dilute gas as :$n\; \backslash approx\; \backslash sqrt\}$ where $A$ is the molar refractivity, $p$ is the pressure of the gas, $R$ is the universal gas constant, and $T$ is the (absolute) temperature. ==History== The Lorentz–Lorenz equation is named after the Danish mathematician and scientist Ludvig Lorenz, who published it in 1869, and the Dutch physicist Hendrik Lorentz, who discovered it independently in 1878. 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「Lorentz–Lorenz equation」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.