This formula expresses the relationship between the refractive index of a gas and the polarizability of the molecules of that gas. If the refractive index of the gas is n , the density is ρ, the molecular weight of the molecule of that gas is M , the polarizability is α, Avogadro's number is N A , and the dielectric constant of a vacuum is ε 0 , it can be expressed as follows. This formula was independently derived by HA Lorentz of the Netherlands and Ludwig Valentin Lorenz of Denmark (1829-91), and indicates that the refractive index n of a gas can essentially be determined if the polarizability α of the molecule of that gas is given. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
気体の屈折率と,その気体の分子の分極率との関係を表す式。気体の屈折率をn,密度をρとし,その気体の分子の分子量をM,分極率をα,アボガドロ数をNA,真空の誘電率をε0とすると,で表される。この関係式は,オランダのH.A.ローレンツとデンマークのL.V.ローレンツLudwig Valentin Lorenz(1829‐91)によってそれぞれ独立に導き出されたもので,気体の屈折率nは,本質的にその気体の分子の分極率αが与えられれば求められることを示している。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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