Annular spherometer - Annular spherometer

Japanese: 環状球面計 - かんじょうきゅうめんけい
Annular spherometer - Annular spherometer

...where d is the length of one side of the triangle formed by the fixed legs. An even more accurate method is the ring spherometer shown in Figure 2. The sphere whose radius of curvature is to be measured is placed on the cylindrical ring C.

*Some of the terminology used to refer to "annular spherometer" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ここでdは固定脚で作られる三角形の一辺の長さである。 さらに精度のよいものに図2の環状球面計ring spherometerがある。円筒環Cの上に曲率半径を測定しようとする球面を乗せる。…

※「環状球面計」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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