1911 Encyclopædia Britannica/Achromatism

From Wikisource
Jump to: navigation, search

ACHROMATISM (Gr. on-, privatise, Xp6`:, ua, colour), in optics, the property of transmitting white light, without decomposing it into the colours of the spectrum; “ achromatic lenses ” are lenses which possess this property. (See LENS, ABERRATION and PHOTOGRAPHY.)