Definition of OBSCURA. Meaning of OBSCURA. Synonyms of OBSCURA
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Definition of OBSCURA
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Camera obscura Camera obscura Cam"e*ra ob*scu"ra [LL. camera chamber + L.
obscurus, obscura, dark.] (Opt.)
1. 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.
2. (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.
Obscurant Obscurant Ob*scur"ant, n. [L. obscurans, p. pr. of obscurare
to obscure.]
One who obscures; one who prevents enlightenment or hinders
the progress of knowledge and wisdom. --Coleridge.
Obscurantism Obscurantism Ob*scur"ant*ism, n.
The system or the principles of the obscurants. --C.
Kingsley.
Obscurantist Obscurantist Ob*scur"ant*ist, n.
Same as Obscurant. --Ed. Rev.
Obscuration Obscuration Ob`scu*ra"tion, n. [L. obscurativ: cf.F.
obscuration. See Obscure, v. t. ]
The act or operation of obscuring; the state of being
obscured; as, the obscuration of the moon in an eclipse.
--Sir J. Herschel.
