freedom from color.
freedom from chromatic aberration, as in an .
Thus examined, the departure of the eye from achromatism appears very gross indeed.
Six Lectures on Light John Tyndall
The achromatism of prisms depends upon the same principles, and it is effected in the same way as that of lenses.
Cooley’s Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades…, Sixth Edition, Volume I Arnold Cooley
The reflecting telescope was invented; the recognized possibility of achromatism led to an improvement in the refractor.
History of the Intellectual Development of Europe, Volume II (of 2) John William Draper
As the diameter of the lens was so small in comparison with its focal length, its want of achromatism was inappreciable.
Experimental Determination of the Velocity of Light Albert A. Michelson
Leonhard Euler in 1747 had suggested that achromatism might be obtained by the combination of glass and water lenses.
Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6 Various
It would seem that the eye is but little sensitive to colours thus presented, perhaps on account of its own want of achromatism.
Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 6 Various
It is upon this principle that the achromatism of the image is produced, the different colored rays being united into one focus.
Reminiscences of Glass-making Deming Jarves
achromatism a·chro·ma·tism (ā-krō’mə-tĭz’əm, ə-krō’-)
The quality of being achromatic.
The correction of chromatic aberration by combining lenses of different refractive indexes and different dispersion.
Also, achromatophilic [ey-kruh-mat-uh-fil-ik, ak-ruh-, ey-kroh-muh-tuh-] /ˌeɪ krəˌmæt əˈfɪl ɪk, ˌæk rə-, eɪˌkroʊ mə tə-/ (Show IPA). having little or no affinity for stains. an achromatophil cell or tissue. achromatophil a·chro·mat·o·phil (ā’krō-māt’ə-fĭl, āk’rō-, ā-krō’mə-tə-, ə-krō’-) or a·chro·mo·phil (ā-krō’mə-fĭl, ə-krō’-) adj. Not able to be colored by histological or bacteriological stains. n. A cell or tissue that […]
the property of having little or no affinity for stains.
(def 2). achromatopsia a·chro·ma·top·si·a (ə-krō’mə-tŏp’sē-ə) or a·chro·ma·top·sy (ə-krō’mə-tŏp’sē) n. A severe congenital deficiency in color perception, often associated with nystagmus and reduced visual acuity. Also called achromatic vision, monochromatism.
achromatosis achromatosis a·chro·ma·to·sis (ə-krō’mə-tō’sĭs) n. pl. a·chro·ma·to·ses (-sēz’) See achromia.