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ubstance that forms images by the reflection of rays of light. And in her hand she held a mirror bright, Wherein her face she often viewèd fair. Spenser.

See Projector, below.

The convergence to different foci, by a lens or mirror, of rays of light emanating from one and the same point, or the deviation of such rays from a single focus; called spherical aberration, when due to the spherical form of the lens or mirror, such form giving different foci for central and marginal rays; and chromat…

ge follows. J. H. Newman. Lo! where the stage, the poor, degraded stage, Holds its warped mirror to a gaping age. C. Sprague.

An arrangement of lenses and mirrors which enables a person to see an object in spite of intervening objects.

distorted by anamorphosis to its normal proportions. It usually consists of a cylindrical mirror.

or curved surface, which, when viewed from a certain point, or as reflected from a curved mirror or through a polyhedron, appears regular and in proportion; a deformation of an image.

A thin stuff used for the backs of framed pictures, mirrors, etc.

res are calcined, to sublime the sulphur and arsenic from the pyrites. Weale. -- Burning mirror, a concave mirror, or a combination of plane mirrors, used for the same purpose as a burning glass.

An instrument which by means of a prism of a peculiar form, or an arrangement of mirrors, causes an apparent image of an external object or objects to appear as if projected upon a plane surface, as of paper or canvas, so that the outlines may conveniently traced. It is generally used with the microscope.…

n apparatus in which the images of extermal 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 oulines may be traced.

A reflecting optical glass or instrument; a mirror. [Obs.]

roperties and phenomena of reflected light, and particularly that which is reflected from mirrors or polished bodies; --- formerly caled anacamptics.

A species of divination, which was perforned by letting down a mirror into water, for a sick person to look at his face in it. If his countenance appeared distorted and ghastly, it was an ill omen; if fresh and healthy, it was favorable.

A horse; hence, a support or frame. Cheval glass, a mirror swinging in a frame, and large enough to reflect the full leght figure.

A slightly convex mirror, commonly of black glass, used as a toy for viewing the reflected landscape.

curve of the of the inner surface of an eggshell, in opposition to convex; as, a concave mirror; the concave arch of the sky.

ds drawn parallel to the other. -- Conjugate focus (Opt.) See under Focus. -- Conjugate mirrors (Optics), two mirrors so placed that rays from the focus of one are received at the focus of the other, especially two concave mirrors so placed that rays proceeding from the principal focus of one and reflected in a paral…

exhibition in which a series of views in various parts of the world is seen reflected by mirrors through a series of lenses, with such illumination, etc., as will make the views most closely represent reality.

r without quite separating into parts. By misfortune it cracked in the coling. Boyle. The mirror cracked from side to side. Tennyson.