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noun
Lens  n.  (pl. lenses)  (Opt.) 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. Lenses Note: Of spherical lenses, there are six varieties, as shown in section in the figures herewith given: viz., a plano-concave; b double-concave; c plano-convex; d double-convex; e converging concavo-convex, or converging meniscus; f diverging concavo-convex, or diverging meniscus.
Crossed lens (Opt.), a double-convex lens with one radius equal to six times the other.
Crystalline lens. (Anat.) See Eye.
Fresnel lens (Opt.), a compound lens formed by placing around a central convex lens rings of glass so curved as to have the same focus; used, especially in lighthouses, for concentrating light in a particular direction; so called from the inventor.
Multiplying lens or Multiplying glass (Opt.), a lens one side of which is plane and the other convex, but made up of a number of plane faces inclined to one another, each of which presents a separate image of the object viewed through it, so that the object is, as it were, multiplied.
Polyzonal lens. See Polyzonal.






Collaborative International Dictionary of English 0.48








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"Lens" Quotes from Famous Books



... varmint looks considerably snaky." Then, without moving his glass, he let drop a word at a time, as if the facts were trickling into his telescope at the lens, and out at the ...
— Great Sea Stories • Various

... on Colonel's snuggling nose. "Not at all," she answered, and took a quick step to one side. But before she had taken it the sharp-eyed little lens of the camera had caught her, her attitude at the instant one of action, the expression of her face that of vivacious response. She flew out of range and before she could speak the camera clicked again, this time ...
— The Twenty-Fourth of June • Grace S. Richmond

... camouflage. To be successful in camouflage, one must learn to imitate nature and that is what we had to study, and one's tracks must always be covered. A successful bit of camouflage not only deceives the eyes of the enemy aerial observers, but it also deceives the lens of the enemy camera. To make this perfectly clear, it should be said that the lens of cameras used in warfare are exceedingly delicate and frequently when the plate of an aerial photograph is developed, it reveals a spot that means some extraordinary work on the ...
— In the Flash Ranging Service - Observations of an American Soldier During His Service - With the A.E.F. in France • Edward Alva Trueblood

... loved to lie upon Lorette And, couched on cornflowers, gaze across the lines At Vimy's heights—we had not Vimy yet— Pale Souchez's bones and Lens among the mines, The tall pit-towers and dusky heaps of slag, Until, like eagles on the mountain-crag By strangers stirred, with hoarse indignant shrieks Gunners emerged from some deep-delved lair To chase the intruder from their sacred peaks ...
— Punch, or the London Charivari, Vol. 153, Aug. 22, 1917 • Various

... directed to make a leap forward and, operating on both banks of the Scarpe, to put themselves in touch with the garrison of Dunkirk, which, on its side, had pushed forward as far as Douai. But on Oct. 2 and 3 the bulk of our fresh army was very strongly attacked in the district of Arras and Lens. Confronting it were two corps of cavalry, the guards, four active army corps, and two reserve corps. A fresh French army corps was immediately transported and ...
— New York Times Current History; The European War, Vol 2, No. 2, May, 1915 - April-September, 1915 • Various

... better done at Lens,' said my fellow-traveller. 'Do you know Lens? They are all miners there, you know—very curious people. I suppose they were glad to come up from under the ground and look at us. Some of the women, too, were pretty—really very pretty. It was all very well arranged. ...
— France and the Republic - A Record of Things Seen and Learned in the French Provinces - During the 'Centennial' Year 1889 • William Henry Hurlbert

... Wilson woke aching in every bone and shivering with cold. A slight sound caught his ear: Holmlock Shears, on his knees, bent in two, was examining grains of dust through his lens and inspecting certain hardly perceptible chalk-marks, which formed figures which he put down in ...
— The Blonde Lady - Being a Record of the Duel of Wits between Arsne Lupin and the English Detective • Maurice Leblanc

... Browne at a literary club; he had only been a few hours in London, and he seemed highly pleased and excited at finding himself in the old city to which his thoughts had so often wandered. Browne was an intensely sympathetic man. His brain and feelings were as a "lens," and he received impressions immediately. No man could see him without liking him at once. His manner was straightforward and genial, and had in it the dignity of a gentleman, tempered, as it were, by the fun of the humorist. When you heard him talk you wanted to make much of him, ...
— The Complete Works of Artemus Ward, Part 1 • Charles Farrar Browne

... that spotlight went on with his eyes at their present sensitivity, he'd be blind for hours. He fired carefully, smashing lens and bulb. The machine-gun opened up, stuttering, wildly into the dark. If someone elsewhere on the island heard that noise—Dalgetty shot again, dropping the gunner ...
— The Sensitive Man • Poul William Anderson

... visitor gets some idea of the amazing beauty of the structure, which is certainly unsurpassed by any other cathedral in the kingdom. The building exhibits almost every style of architecture, from the Norman work of William of Lens to the late Perpendicular of Prior Goldstone, and yet the work of composition and design has been so exquisitely carried out that there is no hint of any want of harmony in the magnificent whole. The interior is no less remarkable, the arches and vaulting of the nave being some ...
— What to See in England • Gordon Home

... They covered her eyes each with a shaking lens; the chairs and tables floated up to her as if she stood in an aquarium of thick, ...
— Mary Olivier: A Life • May Sinclair

... Ave., Cleveland, Ohio, a 6-1/2 x 8-1/2 camera with rising front, a fine lens, 3 double plate holders, tripod and carrying case, for a Kodack, Hawk ...
— Golden Days for Boys and Girls - Volume XIII, No. 51: November 12, 1892 • Various

... listened for snatches of the conversation of Jack and Mary and Mr. Pyecroft when they passed her door; at times she stood upon a chair at one of her windows and cautiously peered through the little panes in her shutters, like the lens of a camera, down into the ...
— No. 13 Washington Square • Leroy Scott

... in this very simple process are, if we consider closely, simply numberless. The scientist must make acts of faith, certainly reasonable acts, yet none the less of faith, for all that: first, that his fly is not a freak of nature; next, that his lens is symmetrically ground; then that his observation is adequate; then that his memory has not played him false between his observing and his recording that which he has seen. These acts are so reasonable that we forget that they are acts of faith. They ...
— Paradoxes of Catholicism • Robert Hugh Benson

... clamps rose coloured spectacles on to his nose and the man on the spot is anxious; but, once the men on the spot jump off they become as jolly as sandboys, whilst the man in the arm chair sits searching for a set-back with a blue lens telescope. ...
— Gallipoli Diary, Volume I • Ian Hamilton

... contributed to the progress of science; and the lucidity of exposition which marks his Dioptrics stands conspicuous even amid the generally luminous style of his works. Its object is a practical one, to determine by scientific considerations the shape of lens best adapted to improve the capabilities of the telescope, which had been invented not long before. The conclusions at which he arrives have not been so useful as he imagined, in consequence of the mechanical difficulties. But the investigation by which he reaches them has ...
— Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 2 - "Demijohn" to "Destructor" • Various

... search, in the same soft zone, for the secret of the mystic fountain. I remember how, during that night, I looked for the first time through a powerful night-glass. It had always seemed a thing wholly inconceivable, that a mere lens could change darkness into light; and as I turned the instrument on the preceding gunboat, and actually discerned the man at the wheel and the others standing about him,—all relapsing into vague gloom again at the withdrawal of the glass,—it gave a feeling of childish delight. Yet ...
— Army Life in a Black Regiment • Thomas Wentworth Higginson

... It was like looking through a crystal lens—every leaf seemed to stand out vividly. Sounds came up to me with marvellous distinctness. Summer was coming, and with it the assurance of a new peace. Down there I could see our home, and on its veranda, ...
— The Trail of '98 - A Northland Romance • Robert W. Service

... that we thought well worth taking. Unfortunately the saint in the niche could not come in, as it was some distance from the door, but just at the right moment Lydia, quite unconsciously, stepped before the lens, and near the stone stairway which she ...
— In Chteau Land • Anne Hollingsworth Wharton

... reformers with the French Jacobins. On 31st May the Duke of Richmond charged that writer with being an emissary from abroad, because he had advised the destruction of the British navy.[74] There is no such passage in the "Rights of Man"; and the Duke must have read with the distorting lens of fear or hatred the suggestion that, if England, France, and the United States were allied, a very small navy would be needed, costing not more than half a million a year.[75] But this incident is typical of the prejudice that was growing against France. Grenville ...
— William Pitt and the Great War • John Holland Rose

... The lace on that child's dress would bear even a stronger lens than my glass. Here Patterson, take this box, and letter to Mr. Endicott, and if satisfactory, carry them to the packing counter. Shipping address is in the letter. Hurry up, my lad. Sit down, ...
— At the Mercy of Tiberius • August Evans Wilson

... telegrams from the front built it up day by day before one's eyes! Week by week, afterwards, with a mastery in artillery and in aviation that nothing could withstand, the British Army pushed on through April. After the first great attack which gave us the Vimy Ridge and brought our line close to Lens in the north, and to the neighbourhood of Bullecourt in the south, the 23rd of April saw the second British advance, which gave us Gravrelle and Guemappe, and made further breaches in the Hindenburg ...
— Towards The Goal • Mrs. Humphry Ward

... then as for long afterwards the squalidest in the world. The last night I saw my friends they told me of the tragedy which had just happened at the camp in the City Hall Park. Fitz James O'Brien, the brilliant young Irishman who had dazzled us with his story of "The Diamond Lens," and frozen our blood with his ingenious tale of a ghost—"What was It"—a ghost that could be felt and heard, but not seen—had enlisted for the war, and risen to be an officer with the swift process of the first days of it. In that camp he had just then shot and killed a man for some ...
— Henry James, Jr. • William Dean Howells

... the most awful Bunker in the realms of fancy. This is a very early work; if nothing else of Mr. Kipling's existed, his memory might live by it, as does the memory of the American Irishman by the "Diamond Lens." The sham magic of "In the House of Suddhu" is as terrible as true necromancy could be, and I have a faiblesse for the "Bisara of Pooree." "The Gate of the Hundred Sorrows" is a realistic version of "The English Opium Eater," and more powerful by dint of less rhetoric. ...
— Essays in Little • Andrew Lang

... on with. From the way Lindsay looked at her as she spoke, he might have been suspected of other discoveries, possible only to the somewhat privileged in this blind world, where intimacy must lend a lens to find out anything ...
— The Path of a Star • Mrs. Everard Cotes (AKA Sara Jeannette Duncan)

... incidentally that he visited Professor Amici, who showed him his microscopes "magnifying (it was said) two thousand diameters." Emerson hardly knew his privilege; he may have been the first American to look through an immersion lens with the famous Modena professor. Mr. Emerson says that his narrow and desultory reading had inspired him with the wish to see the faces of three or four writers, Coleridge, Wordsworth, Landor, De Quincey, Carlyle. His accounts of his interviews with these distinguished persons are ...
— The Autocrat of the Breakfast-Table • Oliver Wendell Holmes, Sr. (The Physician and Poet not the Jurist)

... a simultaneous and corresponding ingrowth of one part and outgrowth of another. The skin in front of the future eye becomes depressed, the depression increases and assumes the form of a sac, which changes into the aqueous humour and lens. An outgrowth of brain substance, on the other hand, forms the retina, while a third process is a lateral ingrowth of connective tissue, which afterwards changes into the vitreous humour of ...
— On the Genesis of Species • St. George Mivart

... at its forward pointed end. The control room was here, a small cubby of levers and banks of dial-faces. Three men, evidently the operators, sat within. They were dressed like Tako save that they each had a great round lens like a monocle on the left eye, with dangling wires from it leading to dials ...
— The White Invaders • Raymond King Cummings

... said gravely as he covered the lens; 'I think that will come out very well indeed. You ...
— The Talking Horse - And Other Tales • F. Anstey

... the bottom of the black-and-gold case, he walked forward for eleven paces, which brought him right into the bow of the window. Here he bent down, and, with the torch in one hand, and a small magnifying lens that he was never without in the other, searched the floor eagerly for some join in the boards, which should denote the edge of a trap-door or an opening ...
— The Ashiel mystery - A Detective Story • Mrs. Charles Bryce

... his face sprang into the lens and never have I seen a visage lined and marked as though by ages of unsleeping misery as was that of ...
— The Moon Pool • A. Merritt

... nebulae seen in the heavens. Its direction is at right angles to that of the sun's rotation, a straight line drawn from either pole of the great luminary divides it in the centre. From its outline resembling that of a lens in section, it is frequently described as a 'cosmical body of ...
— Chambers's Edinburgh Journal, No. 449 - Volume 18, New Series, August 7, 1852 • Various

... instructive in another way. It is not operated by light, at least not by light alone. A certain temperature must be attained, and that temperature suffices in complete darkness. Nevertheless, I find that on exposing to a very concentrated spectrum (collected by a lens of short focus) a slip of paper prepared as above (that is to say, by washing with the mixed solutions, exposure to sunshine, washing and discharging the uniform blue color so induced, as in the last article), its whiteness is changed to a ...
— Photographic Reproduction Processes • P.C. Duchochois

... drawing-room and coffee, leaving the gentlemen deep in a political discussion in the professor's snuggery, just off the dining-room, Mrs. Macon saw the children happily interested in some beautiful photographs of European scenes, viewed through a powerfully mounted lens, then turned to ...
— Sara, a Princess • Fannie E. Newberry

... fitted with a divided circle reading to single degrees. The circle revolving with the Nicol prism for changing the intensity of the star, has a diameter of 14 cm. and reads by means of two verniers to 6 min. A concave lens is mounted in the path of the artificial star to make the light diverging at the proper angle and a plane parallel plate is adjustably fixed in the center of the box in order to throw the light in the eye piece. An achromatic objective in front of the eye piece brings ...
— Astronomical Instruments and Accessories • Wm. Gaertner & Co.

... upon a microscope from the right side of the lens-tube, and could see, laid upon the stage, a glass slide. Under the cover-glass, in place of an ordinary specimen, there was supposed to be a new reflex,—one of those discovered by my friend the neurologist, Dr. X., ...
— The Journal of Abnormal Psychology - Volume 10

... of the Compendium opens with several chapters on the anatomy and physiology of the eye and the phenomena of vision. According to Gilbert, the eye consists of three humors, the albugineous (aqueous), the crystalline lens and the vitreous humor, ...
— Gilbertus Anglicus - Medicine of the Thirteenth Century • Henry Ebenezer Handerson

... uninterrupted by comments. It was an art which she had to acquire, for she had no natural aptitude for it, her faculty of observation having hitherto served as an instrument with which she could extract lessons from life; a lens used for the purpose of collecting data on exact scientific principles as matter from which to draw conclusions; but with practice she became an adept in the art of describing the one while at the ...
— The Heavenly Twins • Madame Sarah Grand

... brother magistrates and brother game- preservers; and it is, therefore, not wonderful that they returned a verdict for the plaintiff, with a shilling damages; which, in a wilful trespass, was always held to carry costs, provided the Judge would certify. Mr. Sergeant Lens now rose, and informed the Judge, that his Brother Burroughs, before he left the Court, had requested him to apply to his Lordship to "certify." The Baron pretended not to hear him; the Sergeant repeated the application in a louder voice; and ...
— Memoirs of Henry Hunt, Esq. Volume 2 • Henry Hunt

... strategic element in events; success is readiness for instant action when the opportune moment arrives. When nature has fully ripened an opportunity man must stretch out his hand and pluck it. Inventions may be defined as great minds detecting the strategic moment in nature; Galileo finding a lens in the ox's eye; Watt witnessing steam lift an iron lid; Columbus observing an unknown wood drifting upon the shore. To untold multitudes nature offered these opportune moments for discovery, but only Galileo, Watt and ...
— The Investment of Influence - A Study of Social Sympathy and Service • Newell Dwight Hillis

... this reason—that the second wrong presents itself to him in the guise of the only practicable right. The action which before commission has been seen with that blended common sense and fresh untarnished feeling which is the healthy eye of the soul, is looked at afterwards with the lens of apologetic ingenuity, through which all things that men call beautiful and ugly are seen to be made up of textures very much alike. Europe adjusts itself to a fait accompli, and so does an individual character—until the placid ...
— Adam Bede • George Eliot

... around, through the lens, and forced out one expression of delight after the other. He was oblivious of everything else. He forgot that there were dozens of the visitors ready in line to be introduced to him; but all enjoyed the great pleasure he ...
— The Wonder Island Boys: Adventures on Strange Islands • Roger Thompson Finlay

... from her hand and blinked out. It struck the stove and she heard the tinkle of the broken lens. The woman's hand caught at the sacking before the window at her left shoulder. Gripping it wildly to save herself from that onslaught, she tore it away. For the second time the revolver was twisted from her ...
— O. Henry Memorial Award Prize Stories of 1920 • Various

... state until the 7th of December. The uncertain clambering motion was now increasing, and likewise the defect of sight. He ran against almost every person and every thing. The cornea was transparent, the iris contracted, there was no opacity of the lens, or pink tint of the retina, but a peculiar glassy appearance, as unconscious of everything around it. An emetic was given, and, after that, an ounce of ...
— The Dog - A nineteenth-century dog-lovers' manual, - a combination of the essential and the esoteric. • William Youatt

... coincident with the center line of the conduit, is cut in the stack. A vertical plane drawn through the center line of the bore-hole of the cannon and that of the slit, if produced, intersects the center line of a quartz lens, and coincides with the center of a stenopaic slit and the axis of the revolving drum carrying the film. The photographing apparatus consists of a shutter, a quartz lens, and a stenopaic slit, 76 by 1.7 mm., between the lens and the sensitized film on the rotary ...
— Transactions of the American Society of Civil Engineers, vol. LXX, Dec. 1910 • Herbert M. Wilson

... never-ending theme. They reveal to the reader a state of things that strikes one none the less in English literature of the period—the intense interest of all classes in theological matters. It shows us how they looked at all things through a theological lens. Although we have left this phase of popular thought so recently behind us, we can even now scarcely imagine ourselves back into it. The idea of ordinary men, or of the vast majority, holding their religion as anything else than a very pious opinion absolutely unconnected ...
— German Culture Past and Present • Ernest Belfort Bax

... a woman in black, who stood apart from her fellow-voyagers in a pensive attitude, gazing into the sky. A cheer arose from the boat's crew, and the report of a small cannon boomed and echoed along the woody shores; yet Burr still held the magnifying lens before his eye, and a certain agitation was ...
— A Dream of Empire - Or, The House of Blennerhassett • William Henry Venable

... a hurried trip down to the express company's office. Kennedy examined the sections of rails minutely with a strong pocket-lens. ...
— The Treasure-Train • Arthur B. Reeve

... then told me, that it was by his grandson's directions that this glass, which he said was called a magnifying-glass, or convex-lens, was added to my show-box. 'He makes you a present of it; and now,' added he, smiling, 'get all your little performers into order, and prepare for a second representation: I will send for a clock-maker in this town, who is an ingenious ...
— Tales & Novels, Vol. 2 • Maria Edgeworth

... more or less ovate to cordate, serrate, palmately 3-ribbed, much darker on the upper surface; both sides slightly roughened with scattered hairs. Fruit sweet, edible, in clusters in the axils of the leaves; seeds lens-shaped, with a ridge on the inner side. Flowers white; in July. A large, broad-topped tree, introduced from Japan. Hardy at Washington, but dies to the ground in the ...
— Trees of the Northern United States - Their Study, Description and Determination • Austin C. Apgar

... The typical eye of the higher animals consists of a lens and two humours or fluids, known as ...
— The Coverley Papers • Various

... have to attract three times that quantity. Since any flame supplied with too little air tends to emit free carbon or soot, it follows that any well-made acetylene burner delivering a gas containing benzene vapour will yield a more or lens smoky flame according to the proportion of benzene in the acetylene. Moreover, at ordinary temperatures benzene is a liquid, for it boils at 81 deg. C., and although, as was explained above in the ...
— Acetylene, The Principles Of Its Generation And Use • F. H. Leeds and W. J. Atkinson Butterfield

... trouble him, except for the momentary delay. Because he felt well assured that the strong, concentrated study that he would bring to it would remove all difficulties, as the rays of a lens melt stones; as the telescope pierces through densest light of stars, and resolves them into their individual brilliancies. He could afford to spend years upon it if it were necessary; but earnestness and application should do quickly the ...
— Septimius Felton - or, The Elixir of Life • Nathaniel Hawthorne

... quiet and intent, yet his brain was like some great lens, refracting and magnifying ...
— The Judgment House • Gilbert Parker

... the early sun. All the quaint peaking of the colored town—sprinkling the sweep of blue bay with red and yellow and white-of-cream—takes a sharpness in this limpid light as if seen through a diamond lens; and there above the living green of the familiar hills I can see even the faces of the statues—the black Christ on his white cross, and the White Lady of the Morne d'Orange—among curving palms. ... It is all as though the island were ...
— Two Years in the French West Indies • Lafcadio Hearn

... we furnished was a couple of textbooks on lens-grinding and telescope-design, and a book on optics. You see, when we made that deal with them, they realized that we weren't any better fighters than they were; we just had better weapons. To have the same kind of weapons, they'd have to learn to make them, and once ...
— Uller Uprising • Henry Beam Piper, John D. Clark and John F. Carr

... curious scene in our salon the day after the news had come of the great victory of Lens. Clement Darpent had been brought in by my brother, who wished him to hear some English songs which my sister and I had been practicing. He had been trying to learn English, and perhaps understood it better than he could ...
— Stray Pearls • Charlotte M. Yonge

... of such a structure as would serve his purpose. Looking about him and collecting a quantity of such small pieces of wreckage as had nails in them, he formed them into a heap, to which with the aid of some dry grass and withered leaves and a lens from his telescope, he set fire and left it to consume. Then picking out three 6-inch planks of about equal length he sharpened their ends with his axe and laid them on the beach, at a distance of about ...
— The Missing Merchantman • Harry Collingwood

... soil in the same pot was searched with the aid of a lens, and the white knife-like apex of a seedling was found on an exact level with that of the surrounding surface. The soil was removed all round the apex to the depth of a quarter of an inch, the seed ...
— The Power of Movement in Plants • Charles Darwin

... but merely eyed his partner with cold interest, as though he were some biological specimen under a lens, and ...
— The Air Trust • George Allan England

... our very noses which are more amazing than this domestic plot of yours; but society has an interest in denying them, and in declaring itself calumniated. Often these dramas are played so naturally and with such a varnish of good taste that even I have to rub the lens of my opera-glass to see to the bottom of them. But, I repeat to you, when a man is a friend of mine, when we have received together the baptism of champagne and have knelt together before the altar of the Venus Commodus, when the crooked fingers ...
— The Marriage Contract • Honore de Balzac

... the answer. "And there's nothin' happened, except, night before last, a man tried to look into your lens-house." ...
— The Great Stone of Sardis • Frank R. Stockton

... lens and its applied use to the telescope and the microscope are "lost" (as the Castle-guides of Edinburgh say) "in the glooms of antiquity." Well ground glasses have been discovered amongst the finds of Egypt and Assyria: indeed much of the finer work ...
— Supplemental Nights, Volume 3 • Richard F. Burton

... fallen on evil days, When science, with remorseless cold precision, Puts out the flame of poetry, and lays Her double-convex lens on fancy's vision. When not a star has longer leave to shine, Unweighed, unanalysed, reduced to gases,— Resolved to something in the chemist's line, By those ...
— The Coming of the Princess and Other Poems • Kate Seymour Maclean

... intellectual lens through the medium of which the poetical observer sees the objects of his observation, modified both in form and colour; or it is that inventive dresser of dramatic tableaux, by which the persons of the play are invested with new drapery, or placed ...
— The Prose Works of William Wordsworth • William Wordsworth

... mystic lapstone, He held it up like a lens, And he counted the long years coming By twenties ...
— Atlantic Monthly Volume 7, No. 40, February, 1861 • Various

... did, fixing up the wizard camera, which I have told you about in the book bearing that title. It would take moving pictures automatically, once Tom had set the mechanism to unreel the films back of the shutter and lens. The lights would instantly flash, when the electrical connections on the door locks were tampered with, and the ...
— Tom Swift and his Great Searchlight • Victor Appleton

... something to hush up and keep hidden away, to have qualms, even among themselves, about knowing; and, like all knowledge that fungus-like shrinks from the sun, it was stunted and unlovely. Their minds were warped by it, their vision was distorted: viewed through its lens, the most natural human relations appeared unnatural. Thus, not the primmest patterns of family life could hope for mercy in their eyes; over the family, too, man, as read by these young rigorists, was held to leave his ...
— The Getting of Wisdom • Henry Handel Richardson

... excited emigrants, whom he charged 'saxpence' for their first peep at the land where fortune and glory waited them. The telescope was quite unequal to the occasion, but its owner had carefully drawn a mark on the lens to represent the desired object, and there were no complaints, although the Australian coast-line sometimes sloped at acute angles, and often appeared ...
— In the Roaring Fifties • Edward Dyson

... idle. Every transparent substance that bore the remotest semblance to a lens I eagerly seized upon and employed in vain attempts to realize that instrument, the theory of whose construction I as yet only vaguely comprehended. All panes of glass containing these oblate spheroidal knots familiarly known as "bull's eyes" were ruthlessly destroyed, in the hope ...
— The Atlantic Monthly, Vol. I., No. 3, January 1858 - A Magazine of Literature, Art, and Politics • Various

... the battle, and explained to me what it was the Canadians had done. And I saw and understood better than ever before what a great feat that had been, and how heavily it had counted. He lent me his binoculars, too, and with them I swept the whole valley toward Lens, where the great French coal mines are, and where the Germans have been under steady fire so long, and have been hanging on ...
— A Minstrel In France • Harry Lauder

... an instrument that is strongly made and of simple construction. The essentials of a good stand camera are that it shall be rigid, possess a rising and falling front, a swing back, and bellows which will be capable of extension to fully double the focal length of the lens to be ...
— How to Observe in Archaeology • Various

... newcomers, and we all knew how ever-present that danger is, more imminent in Alaska in winter than in summer. Our carelessness had brought us nigh to the ruining of the whole expedition. The loss of the films was especially unfortunate, for we were thus reduced to Walter's small camera with a common lens and the six or eight spools of film ...
— The Ascent of Denali (Mount McKinley) - A Narrative of the First Complete Ascent of the Highest - Peak in North America • Hudson Stuck

... throws over the earth one might risk it. We are sure at least of not being seen. The fog hermetically closes the perfected retina of the Sausage that must be somewhere up there, enshrouded in the white wadding that raises its vast wall of partition between our lines and those observation posts of Lens and Angres, whence the ...
— Under Fire - The Story of a Squad • Henri Barbusse

... niches; the substitution of candelabra for columns; and the covering of the surfaces with sculpture, often of classical subject, in high relief and daring perspective, and finished with delicacy which rather would demand preservation in a cabinet, and exhibition under a lens, than admit of exposure to the weather and removal from the eye, and which, therefore, architecturally considered, is worse than valueless, telling merely as unseemly roughness and rustication. But between ...
— On the Old Road Vol. 1 (of 2) - A Collection of Miscellaneous Essays and Articles on Art and Literature • John Ruskin

... an unchanging form. They are somewhat lens-shape and laterally compressed, the two surfaces about equally arched. The ventral surface is nearly straight or but slightly arched; the dorsal is quite convex. The anterior and posterior extremities are equally rounded. The peristome begins as a small depression, but becomes ...
— Marine Protozoa from Woods Hole - Bulletin of the United States Fish Commission 21:415-468, 1901 • Gary N. Galkins

... applications in the army. The transmitter is used by the artillery service in the organization of observatories from which to watch firing, and the receiver is added to the apparatus pertaining to military telegraphy. The two small receivers are held to the lens of the operator by the latter's hat strap, while the transmitter is suspended in a case supported by straps, with the mouthpieces near the face ...
— Scientific American Supplement, Vol. XXI., No. 531, March 6, 1886 • Various

... represented in the sperm-cell by a spermatozooen, must be imparted to a germ-cell in order to effect impregnation. After touching each other, separate them immediately, and observe the result. If, with the aid of a powerful lens, we directly examine the spermatozooen, it will be perceived that, for a short time, it preserves its dimensions and retains all its material aspects. But it does not long withstand the siege of decay, and, having fulfilled ...
— The People's Common Sense Medical Adviser in Plain English • R. V. Pierce

... beatified by it, and takes on with majesty the glory which lies behind all innocence, but which our eyes can never see. Your happiness seems in that mist of light to be removed and permanent; the common world in which you are moving passes, through this trick of the lens, into a stronger world more apt for such a sight, and one in which I am half persuaded (as I still look upon the picture) blessedness is not a rare adventure, but something ...
— On Something • H. Belloc

... coming from the arc light, or, if we were using sunlight, from a heliostat, and a solar image is formed by a lens, L{1}, on the slit, S{1} of the collimator, C. The parallel rays produced by the lens, L{2}, are partially refracted and partially reflected. The former pass through the prisms, P{1}P{2}, and are focused to form a spectrum ...
— Scientific American Supplement, No. 595, May 28, 1887 • Various

... perched himself upon a crate, with a very injured expression upon his face, while Holmes fell upon his knees upon the floor, and, with the lantern and a magnifying lens, began to examine minutely the cracks between the stones. A few seconds sufficed to satisfy him, for he sprang to his feet again, and put his ...
— The Boy Scouts Book of Stories • Various

... with their acquirement my collection was complete. They were the final specimens and I have added nothing since I got them. But in the case of the head there was a further reason for a distinctive setting: it is the gem of the whole collection. Just look at the hair. Take my lens and examine it." ...
— The Uttermost Farthing - A Savant's Vendetta • R. Austin Freeman

... I repeat, he was not a philosopher; he was incapable, by temperament and education, of forming broad generalizations and of escaping in a vast survey from the troublesome pettiness of detail. He saw everything through a lens, nothing in the immensity of nature. Certain senses were absent in him; I think that, with all his justice, he had no conception of the importance of liberty; with all his intelligence, the boundaries of the atmosphere in which his mind could think at all were always close about him; with ...
— Father and Son • Edmund Gosse

... from the raft and screwing into the empty socket the lens of the hydroscope and attaching the battery, while Brown started his sounding; and I was still busy when an exclamation from my companion ...
— Police!!! • Robert W. Chambers

... the engine-room, and meanwhile the air-ship sank through the clouds until the lights of Aberdeen lay about a thousand feet below. A lens of red glass had been fitted to the searchlight of the Ithuriel, and all that was necessary was to connect the forward ...
— The Angel of the Revolution - A Tale of the Coming Terror • George Griffith

... principle of arrangement or assimilation which might unite all my scattered knowledge. Oh, how different if I had had one definite object which, like the lens, should concentrate all the scattered rays to one focus. I met with this remark of Sir Egerton Bridges to-day; it applies to me exactly: "I have never met with one who seemed to have the same overruling passion for literature ...
— The Life and Letters of Elizabeth Prentiss • George L. Prentiss

... for a picture. Nevertheless I opened wide my lens, steadied the camera, and gave it a half-second. The result was fairly good. So much for a high grade lens. We sent Kongoni into camp for help, and ourselves proceeded to build up the usual fire for signal and for protection against wild ...
— African Camp Fires • Stewart Edward White

... set of three stops for lens. The slides for changing stops and for time exposures are alongside of the exposure lever and always show by their position what stop is before the lens and whether the shutter is set for time or instantaneous exposures, ...
— The Great Round World and What Is Going On In It, Vol. 1, No. 38, July 29, 1897 - A Weekly Magazine for Boys and Girls • Various

... the outline of the adult. The lips are formed and, in the anterior part of the lower jaw, four tooth rudiments, to, are externally visible. The mucous membrane of the roof of the mouth, m, is covered with rounded papillae, easily seen with a lens but not shown in the figure. The tongue, tn, is fully formed, and is free anteriorly and laterally to about the extent that is seen in the adult; the papillae with which it is covered are not so prominent as those seen on the roof of the mouth. At the base of the tongue is the prominent transverse ...
— Development of the Digestive Canal of the American Alligator • Albert M. Reese

... at finding how feebly it suggests the bitterness and the greatness of the sacrifice of our men. As the book is written from an entirely personal point of view, the use of the first personal pronoun is of course inevitable, but I trust that the narration of my experience has been used only as a lens through which the great and glorious deeds of our men may be seen by others. I have refrained, as far as possible, except where circumstances seemed to demand it, from mentioning the names of officers or ...
— The Great War As I Saw It • Frederick George Scott

... as his wooden clock, that accurately measured the hours— by means of a common penknife, a tool in everybody's hand; but then everybody is not a Ferguson. A pan of water and two thermometers were the tools by which Dr. Black discovered latent heat; and a prism, a lens and a sheet of pasteboard enable Newton to unfold the composition of light and the origin of colors. An eminent foreign savant once called upon Dr. Wollaston, and requested to be shown over his laboratories, in which science had ...
— How to Get on in the World - A Ladder to Practical Success • Major A.R. Calhoon

... lighted. This point is too often overlooked in the construction of apparatus of this character, but is necessary in all cases of daylight enlarging and especially when direct sunlight is used. Now with the negative box in place, some arrangement must be made for holding the lens, which can be the lens used for making the negative. This for enlargements of a fixed size from negatives of a given size can be accomplished by simply extending the section BGGC Fig. 3, to a proper distance and placing the lens in the end of it; but this permits too little opportunity for adjustments ...
— Bromide Printing and Enlarging • John A. Tennant

... the story of her fate had got across to England, and was being read and retold by each man or woman after his or her own fashion. The papers mentioned it, as seen through the optic lens of the society journalist, with what strange refraction. Most of them descried in poor Herminia's tragedy nothing but material for a smile, a sneer, or an innuendo. The Dean himself wrote to her, a piteous, paternal note, which bowed ...
— The Woman Who Did • Grant Allen

... area of entrenched and fortified ground has been captured from the enemy, whilst valuable support has been afforded to the attack which our Allies have carried on with such marked success against the enemy's positions to the east of Arras and Lens. ...
— New York Times Current History; The European War, Vol 2, No. 5, August, 1915 • Various

... written (to his friend Swinnerton Loughburne, M.A., Ph.D., L.L.D.): "Incontrovertibly the introduction of the personal equation leads to lamentable inversions, and the perceptive faculties when contemplating phenomena through the lens of ego too often conceive an accidental connotation or manifest distortion to be actuality, for the physical (or personal) too often beclouds that power of inner vision which so unerringly penetrates to the inherent truths of incorporeity and the extramundane. Yet this problem, to your eyes, I fear, ...
— The Night Horseman • Max Brand

... fine, new, artificial one was at his disposal; get indigestion, and to hand was artificial digestive fluid or bile or pancreatine, as the case might be. Complexions, too, were replaceable, spectacles superseded an inefficient eye-lens, and imperceptible false diaphragms were thrust into the failing ear. So he went over our anatomies, until, at last, he had conjured up a weird thing of shreds and patches, a simulacrum, an artificial body of a man, with but a doubtful germ of living flesh lurking somewhere in his recesses. To ...
— The Wheels of Chance - A Bicycling Idyll • H. G. Wells

... laboratory. She is a manufacturer of lenses, and has been experimenting on microscopes. She has one now that possesses a truly wonderful power. The leaf of a pear tree, that she had allowed to become mouldy, was under the lens, and she told ...
— Mizora: A Prophecy - A MSS. Found Among the Private Papers of the Princess Vera Zarovitch • Mary E. Bradley

... was speaking, the boys had noticed several dull blows against the outside lens of the light, and Teddy took the first opportunity to ...
— The Rushton Boys at Treasure Cove - Or, The Missing Chest of Gold • Spencer Davenport

... serenely innocent, and winked at the zaptieh to give the proper explanation. He was equal to the occasion. "That," said he, "is an instrument for taking time by the sun." At this the box went the round, each one gazing intently into the lens, then scratching his head, and casting a bewildered look at his nearest neighbor. We noticed that every one about us was armed with knife, revolver, and Martini rifle, a belt of cartridges surrounding his waist. It occurred to us that Turkey was adopting a rather poor method of clipping ...
— Across Asia on a Bicycle • Thomas Gaskell Allen and William Lewis Sachtleben

... little contrivance I call a Spinthariscope. In this a zinc sulphide screen is fitted at the end of a short brass tube, with a speck of radium about a millimeter away from it. Looking in the dark through the lens at the other end one sees a regular bombardment of the screen by the emanations. The phenomena of radium require us to recast many of our ideas of matter, electricity, and energy, and its discovery promises to realize what for the last hundred years have been but day-dreams ...
— The Life Radiant • Lilian Whiting

... they rested in a glade that commanded a fine view of the surrounding country and each of the boys took several time pictures with small lens openings, so ...
— Out with Gun and Camera • Ralph Bonehill

... burst of the sunlight over the world, I sat at my task. Each instrument, each lens I used, I spent an hour or hours over, giving it the finest polish or nicety of adjustment to which it could be brought. Into that day I had distilled my past; into it I was willing to distil the eternity that was before me. With each now application, the field ...
— The Atlantic Monthly, Vol. 10, No. 58, August, 1862 • Various

... remember it, she seemed more like a piece of furniture than anything else—not even a very good cook, nor over and above tidy. One day, when he and I were trimming the lamp, he passed the remark that his first wife used to dust the lens and take a pride in it. Not that he said a word against Anna, though. He never said a word against any living mortal; he was ...
— Famous Modern Ghost Stories • Various

... book a record of surprising achievements with the camera. Several of these illustrations have been described by experts as "the most remarkable photographs of wild life we have ever seen." The book is practical as well as descriptive, and in the opening chapters the questions of camera, lens, plates, blinds, decoys, and other pertinent matters are ...
— The Farringdons • Ellen Thorneycroft Fowler

... found that I had forgotten my lens. I hurried back, and had just entered my room when I heard voices plainly in yours. My book-closet door was open, that of your bath room must have been ajar. I did not want to hear, but the angry tones startled me, and the words grew so fierce—you neither of you thought of how you raised your ...
— Witness to the Deed • George Manville Fenn

... and had often been told that his face was the image of His Who died on the Cross. I expected much, but found infinitely more. I felt that life had been breathed into a Rubens masterpiece. No photograph can do him justice, for no lens can catch the wondrous light ...
— The Land of Deepening Shadow - Germany-at-War • D. Thomas Curtin

... which pebbles are broken by the waves are ground together under the beating surf and rounded, and those of the softer minerals are crushed to powder. The process, however, is a slow one, and if we study these sand grains under a lens we may be surprised to see that, though their corners and edges have been blunted, they are yet far from the spherical form of the pebbles from which they were derived. The grains are small, and in water they have lost about half their weiglit in air; the ...
— The Elements of Geology • William Harmon Norton

... his head under a black cloth. He was screwing the lens of his camera backwards and forwards and appeared to be entirely ...
— General John Regan - 1913 • George A. Birmingham

... once great house and building a fresh inheritance for its former renown. He saw no reason why this should not be,—yet—even while he indulged in his thoughts of her, he knew well enough that behind her small delicate personality there was a powerful intellectual "lens," so to speak, through which she examined the ins and outs of character in man or woman; and he felt that he was always more or less under this "lens," looked at as carefully as a scientist might study bacteria, ...
— The Secret Power • Marie Corelli

... change, I gave him an unjust horror of Catholicism,—you do not tell him the truth. . . . You may speak what is true to you,— but it becomes an error when received into his mind. . . . If his mind is a refracting and polarising medium—if the crystalline lens of his soul's eye has been changed into tourmaline or Labrador spar- -the only way to give him a true image of the fact, is to present it to him already properly altered in form, and adapted to suit the obliquity of his vision; in order that the very refractive ...
— Yeast: A Problem • Charles Kingsley

... and the gorgeous bliss had withered into a dove hued grief, then the cool, soft twilight, thoughtful of the past and its love, crept out of the western caves over the breast of the water, and filled the dome and made of itself a great lens royal, through which the stars and their motions were visible; and the ghost of Aurora with both hands lifted her shroud above her head and made a dawn for the moon on the verge of the watery horizon— a dawn as of the past, the hour ...
— The Marquis of Lossie • George MacDonald

... carpet of crystals, they looked in silent wonder at the fair new world, where wide moors slept in peaceful purity, and distant hills lifted their white summits towards the deep cold blue of the clearing sky. Steely stars glittered and magnified their light through the lens of the eager, frosty air, and old landmarks were hidden, and roads familiar to the wayfarer no longer discovered their trend. Little hillocks had taken the form of mounds, and stretches of level waste were swept by ranges of drift and ...
— Lancashire Idylls (1898) • Marshall Mather

... "stowaways," it was not the sparkle of the lens that had caused them to make that stop. A ravine, or opening through the sand-ridges, much larger than that in which our adventurers were concealed, emboucheed upon the beach, some distance below. It was the appearance of this opening that had attracted the attention ...
— The Boy Slaves • Mayne Reid

... with illustrations showing their forms was given by Loewenhoeck, a linen dealer in Amsterdam in 1675. The fineness of the linen being determined by the number of threads in a given area, it is necessary to examine it with a magnifying lens, and he succeeded in perfecting a simple lens with which objects smaller than had been seen up to that time became visible. It must be added that he was probably endowed with very unusual acuteness of vision. He found in a drop ...
— Disease and Its Causes • William Thomas Councilman

... it be not, it cannot be anywhere else but there. It is not the crystalline lens of your eyes which is sorry, ...
— The Ethics of the Dust • John Ruskin

... dreamily. 'I haf a rock-crystal lens which is permeable to this light, und which I can place in mine camera. I must have a concave mirror, not of glass, which is opaque to this light, ...
— The Grain Ship • Morgan Robertson

... the purpose for which it was intended. The old-fashioned reader was a mild-mannered gentleman. If he could not read his book because it was printed in outrageously small type, he laid it aside with a sigh, or used a magnifying lens, or persisted in his attempts with the naked eye until eyestrain, with its attendant maladies, was the result. Lately however, the libraries have been waking up, and their readers with them. The utilitarian side of the work is pushed to the front; and the reader is by no ...
— A Librarian's Open Shelf • Arthur E. Bostwick

... could not call it a sky. A blur was there—something almost but not quite distinguishable. Then I thought that I could make out a more solid blur which might be the lower lens of the microscope above us. And there were blurred, very distant spots of light, like huge suns masked by a haze, and I knew that they were the hooded lights of the ...
— Beyond the Vanishing Point • Raymond King Cummings

... keel, however, were absolutely flat, and each one hundred feet in length and fifty in breadth, the height of the vessel being about twenty feet. In the centre of the floor and in that of the roof respectively I placed a large lens of crystal, intended to act as a window in the first instance, the lower to admit the rays of the Sun, while through the upper I should discern the star towards which I was steering. The floor, being much heavier than the rest of the vessel, would naturally ...
— Across the Zodiac • Percy Greg

... off several pieces of the wrapper, and was sprawled over the table with a powerful magnifying lens. For some time he minutely studied them, finally squinting closely at a particular one and beginning to show increased excitement. Arising and pushing by us, he went to his many boxes and returned with a small glass-stoppered bottle. It must ...
— Wings of the Wind • Credo Harris

... to the rays of the sun which have been passed through a burning glass. You may let all the rays which can pass through your window pane fall hour after hour upon the paper lying on your desk, and no marked effects follow. But let the same amount of sunlight be passed through a lens and converged to a point the size of your pencil, and the paper will at ...
— Principles of Teaching • Adam S. Bennion

... both off, and handed them to Charles. No man in England is a finer judge of gems than my brother-in-law. I watched him narrowly. He examined them close, first with the naked eye, then with the little pocket-lens which he always carries. "Admirable imitation," he muttered, passing them on to Amelia. "I'm not surprised they should impose ...
— An African Millionaire - Episodes in the Life of the Illustrious Colonel Clay • Grant Allen

... Vimy Ridge I sit at rest With Loos and Lens outspread below; An A.D.C.—the very best— Expounds the panoramic show; Lightly I lunch, and never yet Has quite so strong an orchestration Supplied the music while I ate ...
— Punch, or the London Charivari, Vol. 153, July 25, 1917 • Various

... contains three transparent media for the refraction of the rays of light on their way from the cornea to the visual nerve. Of these media the anterior one (aqueous humor) is liquid, the posterior (vitreous humor) is semisolid, and the intermediate one (crystalline lens) is solid. The space occupied by the aqueous humor corresponds nearly to the portion of the eye covered by the transparent cornea. It is, however, divided into two chambers, anterior and posterior, by the iris, a contractile curtain with a hole in the center (the ...
— Special Report on Diseases of the Horse • United States Department of Agriculture

... chance to examine the strange scrapings of wax which Locke had dug out of the sockets of the candlestick, the more so as they must contain some mysterious poison. First he studied them under a powerful lens, then by chemical reactions, until he made visible some peculiar crystals. Locke himself was amazed as ...
— The Master Mystery • Arthur B. Reeve and John W. Grey

... at this strange mechanical eye. Shaped like a small pipe, it ran up from the conning tower and protruded above the vessel. A large lens at the top turned off as does an elbow in a stove pipe. This portion, when necessary, moved in all directions. When raised to its maximum height everything within a radius of ten miles ...
— The Boy Allies Under Two Flags • Ensign Robert L. Drake

... conducted us to an arbor, to show us the famous telescope, by help of which, he said he had discovered an ant-hill in the moon. It rested in the crotch of a Bread-fruit tree; and was a prodigiously long and hollow trunk of a Palm; a scale from a sea-kraken its lens. ...
— Mardi: and A Voyage Thither, Vol. II (of 2) • Herman Melville

... in cheese. One of the worst and at the same time most common troubles in cheese-making is where the cheese undergoes a fermentation marked by the evolution of gas. The presence of gas is recognized by the appearance either of spherical or lens-shaped holes of various sizes in the green cheese; often they appear in the curd before it is put to press. Usually in this condition the curds look as if they had been punctured with a pin, and are known as "pin holey" curds. Where the gas holes are larger, they ...
— Outlines of Dairy Bacteriology, 8th edition - A Concise Manual for the Use of Students in Dairying • H. L. Russell

... of Africa have been hunted with firearms for many a year, and photographed by more than one marksman of the lens. But here is the truly unique expedition into the jungle. The idea that any one should seriously contemplate a journey to Africa for the purpose of lassoing such creatures as sportsmen either shoot or photograph ...
— Stories from Everybody's Magazine • 1910 issues of Everybody's Magazine

... I gaze, And see as in the camera's gloom, The island with its belt of bays, Its chieftained heights all capped with broom, Which as the living lens it fills, Now seems a giant charmed to sleep— Now a broad shield embossed with hills Upon the ...
— Poems • Denis Florence MacCarthy

... of photography ranks second in importance among the scientific feats of the nineteenth century. The camera is an artificial eye with almost every power of the human retina, and with many that are denied to vision—however ingeniously fortified by the lens-maker. A brief outline of photographic history will show a parallel to the permutative impulse so conspicuous in the progress of electricity. At the points where the electrician and the photographer collaborate ...
— Little Masterpieces of Science: - Invention and Discovery • Various

... chief necessity of our lives that we should be able to see straight morally. Yet that is what we can seldom or never do. Modern education, particularly education in France, provides us at once with a double psychic lens, and a side-squint into the bargain! Seeing straight would be too primitive and simple for us. But Christ says, 'If thine eye be evil, thy whole body shall be full of darkness.' Now this word 'evil,' as set in juxtaposition to the former term 'single,' evidently implies a double ...
— The Master-Christian • Marie Corelli

... advance south of the Lys on two sides of Lille, the taking of the Aubers Ridge, and the turning from the north the German salient at La Bassee. This much of the Allies' plan was to be executed by the British. The work of the French was to drive the Germans from the vicinity of Lens and threaten La Bassee from the south and west. The reasons for making these plans are obvious. The German salient was a source of much danger to the joining of the British and French armies, and the possibility of the ...
— The Story of the Great War, Volume III (of VIII) - History of the European War from Official Sources • Various

... her was a quietly dressed young person, quite inconspicuous, with a keen eye that seemed to take in everything within a radius of a wide-angled lens at ...
— Constance Dunlap • Arthur B. Reeve

... a strip of celluloid film forty-five feet in length with a series of pictures each three-quarters of an inch long moved continuously over a series of rolls. The pictures passed a magnifying lens, but between the lens and the picture was a revolving shutter which moved with a speed carefully adjusted to the film. The opening in the shutter was opposite the lens at the moment when the film had moved on three-quarters of an inch. ...
— The Photoplay - A Psychological Study • Hugo Muensterberg

... a flood through the window upon our desk. This diffuse sunlight will brighten the desk top and slightly increase its temperature, but no striking effects are seen. But now take this same amount of sun energy and, passing it through a lens, focus it on a small spot on the desk top—and the wood bursts almost at once into flame. What diffuse energy coming from the sun could never do, concentrated energy easily and quickly accomplished. ...
— How to Teach Religion - Principles and Methods • George Herbert Betts



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