A semiconductor, such as silicon, which has been doped with impurity atoms to provide smaller energy band gaps for detection of lower-energy photons ' false color The use of colors, instead of shades of gray, on a computer image display screen to represent different brightness levels and highlight very small differences in a dramatic way For example, in an ordinary black-and-white image, objects which differ only slightly in brightness appear as almost the same shade of grey and are hard to distinguish If instead the numerical brightness values are assigned carefully chosen colors then two objects of almost equal brightness will be strongly distinguished when the image is displayed
not forming an essential part of a thing or arising or originating from the outside; "extrinsic evidence"; "an extrinsic feature of the new building"; "that style is something extrinsic to the subject"; "looking for extrinsic aid"
Extrinsic reasons, forces, or factors exist outside the person or situation they affect. Nowadays there are fewer extrinsic pressures to get married. = external intrinsic. coming from outside or not directly relating to something intrinsic (extrinsèque, from extrinsecus )
A classification of asthma that means about the same thing as "allergy-related" Extrinsic asthma has symptoms triggered by exposure to an allergen (This term is not used much any more )