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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