Achromatic

(adj.) having no hue; 'neutral colors like black or white' .

格斯编辑

• Achromatic and other lenses were known, and the microscope, the telescope and spectacles. 威廉·亨利·杜利特. 世纪发明.
• In 1733 Chester More Hall invented the achromatic object glass of crown and flint glass. Edward W. Byrn. 十九世纪发明进展.
• The invention of John Dolland of London, about 1758, of the achromatic lens should be borne in mind in connection with telescopes, microscopes, etc. 威廉·亨利·杜利特. 世纪发明.

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