...By reading this light/dark boundary line on a scale plate, the refractive index of the liquid being measured can be determined. The Amichi prism in the figure is used to prevent the boundary line from being colored when white light is used, and rotates around the optical axis to eliminate color. By replacing the 30° prism with one with a different refractive index, refractive indices from 1.3 to 1.6 can be measured with an accuracy of about 4 to 5 decimal places. ... *Some of the terminology explanations that mention "Amichi Prism" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…この明暗の境界線を目盛板で読み取れば,被測定液体の屈折率が求められる。図のアミチプリズムは,白色光を用いたとき境界線が色づくのを防ぐためのもので,光軸のまわりに回転して色消しを行う。30゜プリズムをいろいろな屈折率をもつものに交換することによって,1.3~1.6の屈折率を小数点以下4~5桁程度の精度で測定できる。… ※「アミチプリズム」について言及している用語解説の一部を掲載しています。 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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