an area in which something acts or operates or has power or control: | the act of distinguishing by comparing differences |
the bony cavity in the skull containing the eyeball | the range of optical density and tone on a photographic negative or print (or the extent to which adjacent areas on a television screen differ in brightness) |
the (usually elliptical) path described by one celestial body in its revolution about another | the perceptual effect of the juxtaposition of very different colors |
the path of an electron around the nucleus of an atom | a conceptual separation or distinction |
a particular environment or walk of life | the opposition or dissimilarity of things that are compared |