Definition of lens

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Lens (n.) A piece of glass, or other transparent substance, ground with two opposite regular surfaces, either both curved, or one curved and the other plane, and commonly used, either singly or combined, in optical instruments, for changing the direction of rays of light, and thus magnifying objects, or otherwise modifying vision. In practice, the curved surfaces are usually spherical, though rarely cylindrical, or of some other figure..

Lern More About Lens

Solenaceous :: Solenaceous (a.) Of or pertaining to the solens or family Solenidae.
Couching :: Couching (n.) The operation of putting down or displacing the opaque lens in cataract.
Decadency :: Decadency (n.) A falling away; decay; deterioration; declension. The old castle, where the family lived in their decadence..
Declension :: Declension (n.) The form of the inflection of a word declined by cases; as, the first or the second declension of nouns, adjectives, etc..
Doublet :: Doublet (a.) An arrangement of two lenses for a microscope, designed to correct spherical aberration and chromatic dispersion, thus rendering the image of an object more clear and distinct..
Stronghand :: Strong (superl.) Applied to forms in Anglo-Saxon, etc., which retain the old declensional endings. In the Teutonic languages the vowel stems have held the original endings most firmly, and are called strong; the stems in -n are called weak other constant stems conform, or are irregular..
Divergent :: Divergent (a.) Causing divergence of rays; as, a divergent lens..
Dermestes :: Dermestes (n.) A genus of coleopterous insects, the larvae of which feed animal substances. They are very destructive to dries meats, skins, woolens, and furs. The most common species is D. lardarius, known as the bacon beetle..
Declension :: Declension (n.) The act or the state of declining; declination; descent; slope.
Megalethoscope :: Megalethoscope (n.) An optical apparatus in which pictures are viewed through a large lens with stereoptical effects. It is often combined with the stereoscope.
Specular :: Specular (a.) Assisting sight, as a lens or the like..
Vulturine :: Vulturine (a.) Of or pertaining to a vulture; resembling a vulture in qualities or looks; as, the vulturine sea eagle (Gypohierax Angolensis); vulturine rapacity..
Spherometer :: Spherometer (n.) An instrument for measuring the curvature of spherical surface, as of lenses for telescope, etc..
Flexion :: Flexion (n.) Syntactical change of form of words, as by declension or conjugation; inflection..
Plano-concave :: Plano-concave (a.) Plane or flat on one side, and concave on the other; as, a plano-concave lens. See Lens..
Glass :: Glass (v. t.) A hard, brittle, translucent, and commonly transparent substance, white or colored, having a conchoidal fracture, and made by fusing together sand or silica with lime, potash, soda, or lead oxide. It is used for window panes and mirrors, for articles of table and culinary use, for lenses, and various articles of ornament..
Chromatism :: Chromatism (n.) The state of being colored, as in the case of images formed by a lens..
Altiscope :: Altiscope (n.) An arrangement of lenses and mirrors which enables a person to see an object in spite of intervening objects.
Astigmatic :: Astigmatic (a.) Affected with, or pertaining to, astigmatism; as, astigmatic eyes; also, remedying astigmatism; as, astigmatic lenses..
Image :: Image (n.) The figure or picture of any object formed at the focus of a lens or mirror, by rays of light from the several points of the object symmetrically refracted or reflected to corresponding points in such focus; this may be received on a screen, a photographic plate, or the retina of the eye, and viewed directly by the eye, or with an eyeglass, as in the telescope and microscope; the likeness of an object formed by reflection; as, to see one's image in a mirror..
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