GNU Collaborative International Dictionary of English

last match results

Found one definition

1.       
   ‖Camera obscura . [LL. camera chamber + L. obscurus, obscura, dark.] (Opt.)
   An apparatus in which the images of external objects, formed by a convex lens or a concave mirror, are thrown on a paper or other white surface placed in the focus of the lens or mirror within a darkened chamber, or box, so that the outlines may be traced.
   1913 Webster
   (Photog.) An apparatus in which the image of an external object or objects is, by means of lenses, thrown upon a sensitized plate or surface placed at the back of an extensible darkened box or chamber variously modified; -- commonly called simply the camera.
   1913 Webster