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.
The state or quality of being achromatic; as, the achromatism of a lens; achromaticity.
From Webster's Unabridged Dictionary by Webster, Noah
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
Newton failed to perceive the existence of media of different dispersive powers required by achromatism; consequently he constructed large reflectors instead of refractors.
From The Project Gutenberg Encyclopedia Volume 1 of 28 by Project Gutenberg
As the diameter of the lens was so small in comparison with its focal length, its want of achromatism was inappreciable.
From Experimental Determination of the Velocity of Light Made at the U.S. Naval Academy, Annapolis by Michelson, Albert A.
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
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
