Achromatic
[,ækrə(ʊ)'mætɪk] or [,ækrə'mætɪk]
Definition
(a.) Free from color; transmitting light without decomposing it into its primary colors.
(a.) Uncolored; not absorbing color from a fluid; -- said of tissue.
Inputed by Bartholomew
Synonyms and Synonymous
a. Colorless, uncolored, untinged, hueless, free from color.
Typed by Essie
Definition
adj. transmitting light without colour of a lens or telescope.—adv. Achromat′ically.—n. Achrom′atism the state of being achromatic.—v.t. Achrom′atize to render achromatic.
Checked by Gardner
Examples
- Achromatic and other lenses were known, and the microscope, the telescope and spectacles. William Henry Doolittle. Inventions in the Century.
- In 1733 Chester More Hall invented the achromatic object glass of crown and flint glass. Edward W. Byrn. The Progress of Invention in the Nineteenth Century.
- The invention of John Dolland of London, about 1758, of the achromatic lens should be borne in mind in connection with telescopes, microscopes, etc. William Henry Doolittle. Inventions in the Century.
Checked by Gardner