achromatism
AmericanEtymology
Origin of achromatism
First recorded in 1790–1800; achromat(ic) + -ism
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
If all three constants of reproduction be achromatized, then the Gaussian image for all distances of objects is the same for the two colours, and the system is said to be in ``stable achromatism.''
From The Project Gutenberg Encyclopedia Volume 1 of 28 by Project Gutenberg
Most insects, when exposed for any length of time to strong light, fade or lose color, and the only way to prevent such achromatism is to exclude the light.
From Directions for Collecting and Preserving Insects by Riley, C. V.
The perfect achromatism of a reflector is, of course, a great advantage, but the chromatic aberration of refractors is now so well corrected that their inferiority in that respect may be disregarded.
From Pleasures of the telescope An Illustrated Guide for Amateur Astronomers and a Popular Description of the Chief Wonders of the Heavens for General Readers by Serviss, Garrett Putman
He will find that he has not given exactly the proper curves to secure achromatism.
From Side-Lights on Astronomy and Kindred Fields of Popular Science by Newcomb, Simon
The absence of this error is termed achromatism, and an optical system so corrected is termed achromatic.
From The Project Gutenberg Encyclopedia Volume 1 of 28 by Project Gutenberg
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