“achromatism”的英文意思_释义_用法

单词

achromatism

释义

achromatism|əˈkrəʊmətɪz(ə)m|
[mod. f. Gr. ἀχρώµατ-ος uncoloured + -ism.]
The state or quality of being achromatic, or of transmitting only white light.
1797Encycl. Brit. s.v. Telescope, Mr. Dollond was anxious to combine this achromatism of the eye-pieces with the advantages which he had found in the eye-pieces with five glasses.1859Parkinson Optics ix. 167 The conditions of achromatism depend only on the focal lengths of the component lenses.1881G. R. Piggott in Nature No. 622. 515 Achromatism is seldom attained without generating a whitish haze, the inevitable accompaniment of residuary spherical aberration.

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