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Tending to one point; approaching each other; convergent; as, converging lines. Whewell. Converging rays(Opt.), rays of light, which, proceeding from different points of an object, tend toward a single point. -- Converging series (Math.), a series in which if an indefinitely great number of terms be taken, their sum w…

Not astigmatic; --said esp. of a lens system which consists of a converging lens and a diverging lens of equal and opposite astigmatism but different focal lengths, and sensibly free from astigmatism.

Burning glass, a conxex lens of considerable size, used for producing an intense heat by converging the sun's rays to a focus. -- Burning house (Metal.), the furnace in which tin ores are calcined, to sublime the sulphur and arsenic from the pyrites. Weale. -- Burning mirror, a concave mirror, or a combination of pl…

An instrument for drawing lines through a point, or lines converging to a center.

Converging to a center; -- applied to lines drawn so as to meet in a point or center.

ng, or transmitting; as, the news was conveyed to us by different channels. The veins are converging channels. Dalton. At best, he is but a channel to convey to the National assembly such matter as may import that body to know. Burke.

Brought close together; arched inward so that the points meet; converging; in close contact; as, the connivent petals of a flower, wings of an insect, or folds of membrane in the human system, etc.

The condition or quality of converging; tendency to one point. The convergence or divergence of the rays falling on the pupil. Berkeley.

tending to one point of focus; tending to approach each other; converging. As many rays of light, as conveniently can be let in, and made convergent. Boyle. The vast dome of its cathedral . . . directing its convergent curves to heaven. Hallam.

The point where two converging lines meet; an angle, either external or internal.

ion of lenses, of high dispersive power, placed at a distance in the narrower part of the converging cone of rays, usually near the middle of the tube.

oes not approach a finite limit when the series is extended indefinitely; -- opposed to a converging series.

To deviate from a line, direction, or course, toward an object; to lean; to tend; as, converging lines incline toward each other; a road inclines to the north or south.

(Optics), the figures observed when certain sections of crystallized bodies are viewed in converging polarized light; thus, a section of a uniaxial crystal, cut normal to the vertical axis, shows a series of concentric colored rings with a single black cross; -- so called because produced by the interference of luminou…

one of the intervertebral synovial disks in some parts of the vertebral column of birds. Converging meniscus, Diverging meniscus. See Lens.

An aggregate or collection of rays of light, especially when diverging from, or converging to, a point.

hich sometimes is fixed in a window shutter; secondly, of a condenser, or large lens, for converging the beam upon the object; and, thirdly, of a small lens, or magnifier, for throwing an enlarged image of the object at its focus upon a screen in a dark room or in a darkened box. -- Solar month. See under Month. -- S…

A convex lens of glass for producing heat by converging the sun's rays into a focus. "Lighting a cigar with a sunglass." Hawthorne.

An outwork with converging sides, its head or front forming a reëntrant angle; -- so called from its form. Called also priestcap.

p.), the intersection of the parallel of any original plane and picture; one of the lines converging to the vanishing point. -- Vanishing point (Persp.), the point to which all parallel lines in the same plane tend in the representation. Gwilt. -- Vanishing stress (Phon.), stress of voice upon the closing portion of…