Thesaurus / achromatic
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

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Thus it is proved beyond all question that the lenses of the eye do not form an achromatic combination.

The achromatic lens consists of a double convex lens of crown glass combined with a plano-concave lens of flint glass.

PhysicsWillis Eugene Tower

The three illustrations given above afford an idea of the plan of construction of our achromatic objectives.

The bands are then achromatic in the sense that the ordinary telescope is so.

The achromatic doublets have a very large, clear and flat field.

Fourthly, there is the contrast of colour and neutrality, the chromatic and achromatic, or hue and shade.

The Harvard College 15-inch achromatic was mounted and ready for work in June, 1847.

The achromatic condenser itself should consist of at least two combinations of different powers and of wide angular apertures.

The construction of achromatic telescopes depends upon this principle.

Given the achromatic object-glass, why should not it be divided?

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WORDS RELATED TO ACHROMATIC

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.