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
Sunglow ::
Sunglass (n.) A convex lens of glass for producing heat by converging the sun's rays into a focus.
Spherometer ::
Spherometer (n.) An instrument for measuring the curvature of spherical surface, as of lenses for telescope, etc..
Dioptrics ::
Dioptrics (n.) The science of the refraction of light; that part of geometrical optics which treats of the laws of the refraction of light in passing from one medium into another, or through different mediums, as air, water, or glass, and esp. through different lenses; -- distinguished from catoptrics, which refers to reflected light..
Eyeglass ::
Eyeglass (n.) A lens of glass to assist the sight. Eyeglasses are used singly or in pairs.
Camera Obscura ::
Camera obscura () 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..
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..
Floriken ::
Floriken (n.) An Indian bustard (Otis aurita). The Bengal floriken is Sypheotides Bengalensis.
Dry Goods ::
Dry goods () A commercial name for textile fabrics, cottons, woolens, linen, silks, laces, etc., -- in distinction from groceries..
Vitrella ::
Vitrella (n.) One of the transparent lenslike cells in the ocelli of certain arthropods.
Declension ::
Declension (n.) Act of courteously refusing; act of declining; a declinature; refusal; as, the declension of a nomination..
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..
Altiscope ::
Altiscope (n.) An arrangement of lenses and mirrors which enables a person to see an object in spite of intervening objects.
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..
Defective ::
Defective (a.) Lacking some of the usual forms of declension or conjugation; as, a defective noun or verb..
Scioptics ::
Scioptics (n.) The art or process of exhibiting luminous images, especially those of external objects, in a darkened room, by arrangements of lenses or mirrors..
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..
Variation ::
Variation (n.) Change of termination of words, as in declension, conjugation, derivation, etc..
Theme ::
Theme (n.) A noun or verb, not modified by inflections; also, that part of a noun or verb which remains unchanged (except by euphonic variations) in declension or conjugation; stem..
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