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.
Thus examined, the departure of the eye from achromatism appears very gross indeed.
From Six Lectures on Light Delivered In The United States In 1872-1873 by Tyndall, John
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.
Leonhard Euler in 1747 had suggested that achromatism might be obtained by the combination of glass and water lenses.
From Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6 "Dodwell" to "Drama" by Various
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
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
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