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单词 achromaticity
释义 achromaticity|əˌkrəʊməˈtɪsɪtɪ|
[f. achromatic + -ity.]
The quality of being achromatic; = achromatism.
1845Encycl. Metrop. IV. 423 s.v. Light, The order in which they [lenses] are placed is of no consequence as far as Achromaticity is concerned.1860Sir J. Herschel in Encycl. Brit. s.v. Telescope, This condition..furnishes the ‘equation of achromaticity’ of an eye-piece.1876Webb in Chambers' Astron. 745 Errors due to the imperfect achromaticity of the object-glass.
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