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

Vitrella :: Vitrella (n.) One of the transparent lenslike cells in the ocelli of certain arthropods.
Descension :: Descension (n.) The act of going downward; descent; falling or sinking; declension; degradation.
Microphotograph :: Microphotograph (n.) An enlarged representation of a microscopic object, produced by throwing upon a sensitive plate the magnified image of an object formed by a microscope or other suitable combination of lenses..
Case :: Case (n.) One of the forms, or the inflections or changes of form, of a noun, pronoun, or adjective, which indicate its relation to other words, and in the aggregate constitute its declension; the relation which a noun or pronoun sustains to some other word..
Broadcloth :: Broadcloth (n.) A fine smooth-faced woolen cloth for men's garments, usually of double width (i.e., a yard and a half); -- so called in distinction from woolens three quarters of a yard wide..
Altiscope :: Altiscope (n.) An arrangement of lenses and mirrors which enables a person to see an object in spite of intervening objects.
Camera Obscura :: Camera obscura () 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..
Flection :: Flection (n.) The variation of words by declension, comparison, or conjugation; inflection..
Holophote :: Holophote (n.) A lamp with lenses or reflectors to collect the rays of light and throw them in a given direction; -- used in lighthouses.
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..
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..
Specular :: Specular (a.) Assisting sight, as a lens or the like..
Stereoplasm :: Stereomonoscope (n.) An instrument with two lenses, by which an image of a single picture projected upon a screen of ground glass is made to present an appearance of relief, and may be viewed by several persons at once..
Alethoscope :: Alethoscope (n.) An instrument for viewing pictures by means of a lens, so as to present them in their natural proportions and relations..
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..
Lenticularly :: Lenticularly (adv.) In the manner of a lens; with a curve.
Floriken :: Floriken (n.) An Indian bustard (Otis aurita). The Bengal floriken is Sypheotides Bengalensis.
Declension :: Declension (n.) Inflection of nouns, adjectives, etc., according to the grammatical cases..
Achromatism :: Achromatism (n.) The state or quality of being achromatic; as, the achromatism of a lens; achromaticity..
Condenser :: Condenser (n.) A lens or mirror, usually of short focal distance, used to concentrate light upon an object..
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