ACHROMATIC • FREE TRANSLATOR.ORG • Definition of Achromatic

Add this Dictionary
to your website!
See more options...

Listen

adjective

Achromatic adj.

(Opt.) Free from color; transmitting light without decomposing it into its primary colors.

(Biol.) Uncolored; not absorbing color from a fluid; said of tissue.

Achromatic lens (Opt.), a lens composed usually of two separate lenses, a convex and concave, of substances having different refractive and dispersive powers, as crown and flint glass, with the curvatures so adjusted that the chromatic aberration produced by the one is corrected by other, and light emerges from the compound lens undecomposed.

Achromatic prism. See Prism.

Achromatic telescope, or Achromatic microscope, one in which the chromatic aberration is corrected, usually by means of a compound or achromatic object glass, and which gives images free from extraneous color.

See images of 'Achromatic'

Etymology of 'Achromatic'

Collaborative International Dictionary of English 0.48

Share |

"Achromatic" Quotes from Famous Books

... achromatic lens of superior quality, having a set of three stops; has two finders, one for vertical and one for horizontal exposures; and is also provided with two sockets for tripod screws, one for vertical and one for horizontal exposures. Fitted with improved rotary shutter, for snap-shots or time ...

— The Great Round World and What Is Going On In It, Vol. 1, No. 38, July 29, 1897 - A Weekly Magazine for Boys and Girls • Various

... ACHROMATIC TELESCOPES, with the New Vetzlar Eye-pieces, as exhibited at the Academy of Sciences in Paris. The Lenses of these Eye-pieces are so constructed that the rays of light fall nearly perpendicular to the surface of the various lenses, by which the aberration is completely removed; ...

— Notes and Queries, Number 192, July 2, 1853 • Various

... age of eighty, with delight and admiration. Those little lenses in their silver mountings, all ground and set and fashioned by his own hand, showed him the blood-globules, and the "pipes" of the teeth, which Purkinje and Retzius found with their achromatic microscopes a century later. We honor his skill and sagacity as they deserve; but a little trick of Mr. Dollond's, applied to the microscopic object-glass, has left all his achievements a mere matter of ...

— The Atlantic Monthly, Vol. I., No. 3, January 1858 - A Magazine of Literature, Art, and Politics • Various