ACHROMATIC • E-FREE TRANSLATION.COM • Definition of Achromatic

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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.

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Etymology of 'Achromatic'

Collaborative International Dictionary of English 0.48

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"Achromatic" Quotes from Famous Books

... lenses, that they may be used double or single, is frequently necessary for the examination of blowpipe experiments, or the reaction of the fluxes. Common lenses, howsoever cheap they may be, are certainly not recommended. A microscope with achromatic lenses can now be purchased so cheap that there is no longer any necessity of procuring one with the common lens. Besides, there is no reliability whatever to be placed in the revelations of the common lens; while on the contrary, the deceptive appearances ...

— A System of Instruction in the Practical Use of the Blowpipe • Anonymous

... Mr. Carpenter's achromatic solar microscope has now a white circular area of nine feet in diameter, to receive the images of the objects upon, some of which are magnified to the enormous size of upwards of eight feet ...

— The Mirror of Literature, Amusement, and Instruction - Volume 14, No. 385, Saturday, August 15, 1829. • Various