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Lens   /lɛnz/   Listen
Lens

noun
(pl. lenses)
1.
A transparent optical device used to converge or diverge transmitted light and to form images.  Synonyms: lens system, lense.
2.
Genus of small erect or climbing herbs with pinnate leaves and small inconspicuous white flowers and small flattened pods: lentils.  Synonym: genus Lens.
3.
(metaphor) a channel through which something can be seen or understood.
4.
Biconvex transparent body situated behind the iris in the eye; its role (along with the cornea) is to focuses light on the retina.  Synonyms: crystalline lens, lens of the eye.
5.
Electronic equipment that uses a magnetic or electric field in order to focus a beam of electrons.  Synonym: electron lens.



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"Lens" Quotes from Famous Books



... richest land showiest attire among the general body of the spectators, and flirting and love-making are part of the order of the day. A very crude form of field-glass or "spy-glass" was already in use, apparently consisting generally of a mere hollow tube, but occasionally provided with a magnifying lens. Nero himself, in consequence of his short-sight, had a "glass" in some way ...
— Life in the Roman World of Nero and St. Paul • T. G. Tucker

... grass that grow unheeded by the roadside; there are hundreds of them at your feet so much alike that the one you chose had no identity, whatever, until you had, by chance or design, separated it from the rest. Bear it away to your home and place it under a powerful lens; is it still the same uninteresting blade it was a moment ago out in the noisy and crowded thoroughfare? Why does your gaze become riveted upon what is revealed? Ah! you discern that such homely things ...
— The Doctor's Daughter • "Vera"

... approached, and I smiled to see that the spectacles astride his handsome nose were minus one lens. He seemed half blind and wholly bewildered. I looked at once for the lost glass, and there it lay shining at me from the very spot where he had been so industriously peering. He laughed grimly as I handed it to him, fitted his treasure into its wonted rim, took out his watch, ...
— Atlantic Monthly, Vol. XII. September, 1863, No. LXXI. - A Magazine Of Literature, Art, And Politics • Various

... torches of lighthouses, multitudes of birds are annually killed by striking against lighthouse towers in thick, foggy weather. The keeper of the Cape Hatteras light once showed me a chipped place in the lens which he said had been made by the bill of a great white Gannet which one thick night crashed through the outer protecting glass of the lighthouse lamp. As many as seven hundred birds in one month have killed themselves ...
— The Bird Study Book • Thomas Gilbert Pearson

... shaped somewhat like those of a humming-bird, which, as is well known, can, at times, vibrate its wings with such velocity that the most rapid camera lens cannot quite catch. ...
— Tom Swift and his Sky Racer - or, The Quickest Flight on Record • Victor Appleton


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