"Convex" Quotes from Famous Books
 ... double-convex lens, Fig. 6 a double-concave, and Fig. 7 a concavo-convex or meniscus. By these it is seen that a double-convex lens tends to condense the rays of light to a focus, a double-concave to scatter them, and a concavo-convex combines ...
— American Handbook of the Daguerrotype • Samuel D. Humphrey
... or concave, according to the kind of sight requiring them. Old people, and those who can only see things at a distance, from the flatness of the eye, which prevents the rays of light converging so as to meet in the centre, require convex lenses. People who can only distinguish objects when viewed closely, from the eye being too convex, require concave lenses to counteract it by spreading the rays, and thus rendering ...
— A Catechism of Familiar Things; Their History, and the Events Which Led to Their Discovery • Benziger Brothers
... morality, his valour, candour, tolerance, truthfulness; his whole victorious strength and greatness, which can triumph over such obstructions, visible there too? Great as the world! No twisted, poor convex-concave mirror, reflecting all objects with its own convexities and concavities; a perfectly level mirror;—that is to say withal, if we will understand it, a man justly related to all things and men, a good man. It is truly a lordly spectacle how this great soul takes in all kinds of men and ...
— English Critical Essays - Nineteenth Century • Various
... here: as, that the Soul consists of two parts, the Irrational and the Rational (as to whether these are actually divided, as are the parts of the body, and everything that is capable of division; or are only metaphysically speaking two, being by nature inseparable, as are convex and concave circumferences, matters not in respect of our present purpose). And of the Irrational, the one part seems common to other objects, and in fact vegetative; I mean the cause of nourishment and growth (for such a faculty of the Soul one would assume ...
— Ethics • Aristotle
... immediate presence of the greater or captain leaf; and always expressing, therefore, its own subordination and secondary character. This law is carried out even in single leaves. As far as I know, the upper half, towards the point of the spray, is always the smaller; and a slightly different curve, more convex at the springing, is used for the lower side, giving an exquisite variety to the form of the whole leaf; so that one of the chief elements in the beauty of every subordinate leaf throughout the tree, is made to depend on its confession of its ...
— The Crown of Wild Olive • John Ruskin
... is a curious little bone; in its form and office unlike any other bone in the body. It is circular, the size of a crown-piece, pretty thick, a little convex on both sides, and covered with a smooth cartilage. It lies upon the front of the knee, and the powerful tendons by which the leg is brought forward pass through it (or rather make it a part of their continuation) from their origin in the thigh to their insertion in the tibia. It protects ...
— Evolution, Old & New - Or, the Theories of Buffon, Dr. Erasmus Darwin and Lamarck, - as compared with that of Charles Darwin • Samuel Butler
... unornamented prose which Ibsen now adopted was very favorable to its discussion. He was accused, however, of having lived so long away from home as to have fallen out of touch with real Norwegian life, which he studied in the convex mirror of the newspapers. It is more serious objection to The Pillars of Society that in it, as little as in The League of Youth, had Ibsen cut himself off from the traditions of the well-made play. ...
— Henrik Ibsen • Edmund Gosse
... plane, smooth; prostrate, prone; stale, insipid, vapid, tasteless, unsavory, unpalatable, mawkish; peremptory, unqualified, positive; spatulous, spatulate; sonant, vocal. Antonyms: convex, concave, warped, ...
— Putnam's Word Book • Louis A. Flemming
... of a nearly plane surface, slightly convex in front, and without tails. His experiments with them are revealing wonderful ...
— The Great Round World and What Is Going On In It, Vol. 1, No. 18, March 11, 1897 - A Weekly Magazine for Boys and Girls • Various
... simply by E.M. variation in nerve, is at first slight. In the second part, there is a rapidly increasing effect with increased stimulus. Finally, a tendency shows itself to approach a limit of response. Thus we find the curve at first slightly convex, then straight and ascending, and lastly, concave to the abscissa ...
— Response in the Living and Non-Living • Jagadis Chunder Bose
... improvement has been made. Originally this work was done by hand with a hammer, the rounding being accomplished by striking one side of the back as the book lay flat, and then the other, forming it at the same time by the hand, to give the back the convex, and the front the concave, form. Some persons are found now who think the hollow or concave front of the book is made by trimming ...
— The Building of a Book • Various
... great planet beneath us hung unspeakable in its beauty. The outlines of several of the continents were clearly discernible on its surface, streaked and spotted with delicate shades of varying color, and the sunlight flashed and glowed in long lanes across the convex surface of the oceans. Parallel with the Equator and along the regions of the ever blowing trade winds, were vast belts of clouds, gorgeous with crimson and purple as the sunlight fell upon them. Immense expanses of snow ...
— Edison's Conquest of Mars • Garrett Putnam Serviss
... of cardboard about 2 by 3 inches in size. B is a piece of paper of the same size pasted to one edge of A. If you bend the paper to a curve, with convex side up and blow across it as shown in Figure C, the paper will rise instead of being depressed. The dotted lines show that the air is passing over the top of the curved paper and yet, no matter how hard you may ...
— Flying Machines - Construction and Operation • W.J. Jackman and Thos. H. Russell
... lower animals. It is called Logos; what does Logos mean? it stands both for reason and for speech, and it is difficult to say which it means more properly. It means both at once: why? because really they cannot be divided.... When we can separate light and illumination, life and motion, the convex and the concave of a curve, then will it be possible for thought to tread speech under foot and to hope to do without it—then will it be conceivable that the vigorous and fertile intellect should renounce its ...
— On the Art of Writing - Lectures delivered in the University of Cambridge 1913-1914 • Arthur Quiller-Couch
... amaze, he did distinctly hear a sound which startled him a good deal, though there was nothing necessarily supernatural in it. He described it as resembling what would occur if you fancied a thinnish table-leaf, with a convex warp in it, depressed the reverse way, and suddenly with a spring recovering its natural convexity. It was a loud, sudden thump, which made the heavy candlestick jump, and there was an end, except that my uncle did not ...
— J.S. Le Fanu's Ghostly Tales, Volume 5 • J.S. Le Fanu
... cutting her body in two with a single bite. Moreover, the Cetonia-grub, perceiving that the enemy is approaching, assumes its defensive posture, rolls itself up and makes a shield for its only vulnerable part, the ventral surface, with its convex back. No, it cannot be an easy operation to subdue the powerful larva in its underground retreat and to stab with the precision ...
— More Hunting Wasps • J. Henri Fabre
... squint for us. If at the same time they magnify the two pictures, we gain just so much in the distinctness of the picture, which, if the figures on the slide are small, is a great advantage. One of the easiest ways of accomplishing this double purpose is to cut a convex lens through the middle, grind the curves of the two halves down to straight lines, and join them by their thin edges. This is a squinting magnifier, and if arranged so that with its right half we see the right picture on the slide, and with its left half the left picture, ...
— Atlantic Monthly, Volume 3, No. 20, June, 1859 • Various
... sensible qualities, both of those which are and those which are not thus visible to the unaided sight. The instruments of this class are designated by the general name of Telescope, and are of two kinds,—the refracting telescope, which derives its magnifying power from a system of convex lenses; and the reflecting telescope, which receives the image of the heavenly ...
— The Uses of Astronomy - An Oration Delivered at Albany on the 28th of July, 1856 • Edward Everett
... formed by refraction in water. He noticed how the bottom of a vessel containing water appears to rise more and more away from the vertical, and at once jumped to the analogy of a concave mirror, which magnifies the image, while a convex mirror was likened to a rarer medium. This line of attack also failed him, as did various attempts to find relations between his measurements of refraction and conic sections, and he broke off suddenly with a diatribe against Tycho's critics, whom he likened ...
— Kepler • Walter W. Bryant
... for example, the "Makaiwa crest" in Moikeha's chant, or the "Huia" of this story. Three kinds of surfing are indulged in—riding the crest in a canoe, called pa ka waa; standing or lying flat upon a board, which is cut long, rounded at the front end and square at the back, with slightly convex surfaces, and highly polished; and, most difficult feat of all, riding the wave without support, body submerged and head and shoulders erect. The sport begins out where the high waves form. The foundation of the wave, honua, the crest side, muku, and the rear, lala, ...
— The Hawaiian Romance Of Laieikawai • Anonymous
... handsome. Susy, who had an auctioneer's eye for values, knew to a fraction the worth of those deep convex stones alternating with small emeralds and brilliants. She was glad to own the bracelet, and enchanted with the effect it produced on her slim wrist; yet, even while admiring it, and rejoicing that it was hers, she had already transmuted it into specie, and reckoned just how ...
— The Glimpses of the Moon • Edith Wharton
... floor of your lean-to lay a thick layer of the fans or branches of a balsam or hemlock, with the convex side up, and the butts of the stems toward the foot of the bed. Now thatch this over with more fans by thrusting the butt ends through the first layer at a slight angle toward the head of the bed, so that the soft tips will curve toward the foot of the bed, and be sure to make the ...
— Boy Scouts Handbook - The First Edition, 1911 • Boy Scouts of America
... The cylinder is oscillating, and the distribution is effected, without an eccentric, by the relative motion of two spherical surfaces fitted one against the other, and having the axis of oscillation for a common axis. The convex surface, which is movable and forms part of the cylinder, serves as a port face, and has two ports in it communicating with the two ends of the cylinder. The concave surface, which is fixed and plays the part of a slide valve, contains three openings, the two outer ...
— Scientific American Supplement No. 275 • Various
... result of the day's observation)—the rest, some eight or ten, had been washed overboard at first. One or two were Algerines, the rest Spaniards. The vessel was a smuggler bound for Gibraltar; there were two stupidly disproportionate guns, taking up the whole deck, which was convex and—nay, look you! (a rough pen-and-ink sketch of the different parts of the wreck is here introduced) these are the gun-rings, and the black square the place where the bodies lay. (All the 'bulwarks' or sides of the top, carried away by the waves.) Well, the ...
— Life and Letters of Robert Browning • Mrs. Sutherland Orr
... at Austerlitz, the French were arranged in a semicircle, with the convex front toward the allies, who occupied the outer arc on a range of heights. Such was the situation on the night of December 1, 1805. The morrow will be the first anniversary of our coronation in Notre ...
— Notable Events of the Nineteenth Century - Great Deeds of Men and Nations and the Progress of the World • Various
... can conceive. The whole universe seemed to be on fire. A broad arch of brilliant prismatic colours spanned the heavens from east to west like a gigantic rainbow, with a long fringe of crimson and yellow streamers stretching up from its convex edge to the very zenith. At intervals of one or two seconds, wide, luminous bands, parallel with the arch, rose suddenly out of the northern horizon and swept with a swift, steady majesty across the whole heavens, like long breakers of phosphorescent ...
— Tent Life in Siberia • George Kennan
... church almost staggers belief in the unassisted naturalness of its architecture. It belongs to a style entirely its own. Its main and lower portion is not divided into nave and transept, but seems like a system of huge semi-cylinders erected on their bases, and united with reentrant angles, their convex surfaces toward us, so that the ground-plan might be called a species of quatre-foil. In each of the convex faces is an admirably proportioned door-way, a Gothic arch with deep-carved and elaborately fretted mouldings, so wonderfully perfect in its imitation that you almost feel ...
— The Atlantic Monthly, Vol. 13, No. 78, April, 1864 • Various
... from a level not much above that of the springing of the transverse and diagonal ribs, which are so arranged as to give a convex curve to the ...
— The Hermit and the Wild Woman and Other Stories • Edith Wharton
... it in its entirety. The earth's shadow is much larger than the moon. If the periphery of the shadow is curved—but the convex moon—a straight-edged object will cast a curved shadow upon a ...
— The Book of the Damned • Charles Fort
... is convex; the eye prominent; the muzzle pointed; the tail thin and arched; the fur short; the ears of moderate size, half erect, and usually of a deep-black colour, with a yellow spot over the eyes. It is an exceedingly ...
— The Dog - A nineteenth-century dog-lovers' manual, - a combination of the essential and the esoteric. • William Youatt
... by external flap has been described (so far as I can discover, for the first time) by Dr. Dubrueil, in his work on operative Surgery:[26]—"Commencing just below the level of the articulation, while the hand is pronated, the surgeon makes a convex incision, beginning at the junction of the outer and middle thirds of the arm behind, reaching at its summit the middle of the dorsal surface of the first metacarpal, and terminating in front just below the palmar surface of the joint, again at the junction ...
— A Manual of the Operations of Surgery - For the Use of Senior Students, House Surgeons, and Junior Practitioners • Joseph Bell
... the rounded, "bomb-proof" aspect of the expanses would be changed into the distinct contour of gigantic waves with a very fine, very sharp crest-line. The upsweep from the northwest would be ever so slightly convex, and the downward sweep into the trough was always very distinctly concave. This was not the ripple which we find in beach sand. That ripple was there, too, and in places it covered the wide backs of these huge waves all over; but never was it found on the ...
— Over Prairie Trails • Frederick Philip Grove
... horizontal bands of yellow (top), white, red, and blue with a green isosceles triangle based on the hoist; centered within the triangle is a white crescent with the convex side facing the hoist and four white, five-pointed stars placed vertically in a line between the points of the crescent; the horizontal bands and the four stars represent the four main islands of the archipelago - Mwali, Njazidja, Nzwani, and Mayotte (a territorial collectivity of France, but ...
— The 2007 CIA World Factbook • United States
... Conventional kutima. Converge konvergi. Conversation konversacio. Converse interparoladi. Converse mala. Conversely male. Conversion (of one's self) konvertigxo. Conversion (of some one else) konverto. Convert (relig.) konverti. Convex malkaveta. Convey alporti. Convey (by vehicle) veturigi. Conveyance veturilo. Convict (man) kondamnulo. Convict kondamnato. Conviction kondamno. Convince konvinki. Convocation kunvoko. Convolution konvolvado—ajxo. Convolvulus ...
— English-Esperanto Dictionary • John Charles O'Connor and Charles Frederic Hayes
... phrenologists, I would merely assume the spinal theory for a moment, in reference to the Sperm Whale's hump. This august hump, if I mistake not, rises over one of the larger vertebrae, and is, therefore, in some sort, the outer convex mould of it. From its relative situation then, I should call this high hump the organ of firmness or indomitableness in the Sperm Whale. And that the great monster is indomitable, you will yet have ...
— Moby Dick; or The Whale • Herman Melville
... seeming like the beak of some fabulous bird; and his whole face became a black silhouette with angles here and there, sharp derisive, irritating. In front of him sat Caballuco, who resembled a dragon rather than a man. Rosario could see his green eyes, like two lanterns of convex glass. This glow, and the imposing figure of the animal, inspired her with fear. Uncle Licurgo and the other three men appeared to her imagination like grotesque little figures. She had seen somewhere, doubtless in some of the clay figures at the fairs, ...
— Dona Perfecta • B. Perez Galdos
... high, seldom small or flat. Bridge:—middle broad and usually straight, but 25 per cent are slightly concave, while two cases are convex. Wings:—In most cases are thin, but are commonly thick; ...
— The Tinguian - Social, Religious, and Economic Life of a Philippine Tribe • Fay-Cooper Cole
... point is 87 deg. Fahr. It might be used in thermometers for measuring temperatures above the boiling point of mercury were it not for the peculiar fact that gallium wets glass so it sticks to the side of the tube instead of forming a clear convex curve on top ...
— Creative Chemistry - Descriptive of Recent Achievements in the Chemical Industries • Edwin E. Slosson
... ardent sanctitude, in pious deeds; And chief in woman charities prevail, That soothe when sorrow or desire assail; Ask the poor pilgrim on this convex cast,— His grizzled locks, distorted in the blast,— Ask him what accents soothe, what hand bestows The cordial beverage, raiment, and repose. Ah! he will dart a spark of ardent flame, And clasp his tremulous hands, and Woman name. Peruse ...
— The True Woman • Justin D. Fulton
... voice may be obtained by taking position not upon the heel or flat of the foot, but upon the ball near the toes—that attitude which further on we shall designate as the third. The chest is eccentric; that is, convex and dilated. In this position all the muscles are tense and resemble the chords of an instrument whose resonance is ...
— Delsarte System of Oratory • Various
... malleable iron or rubber rings about nine inches in diameter and convex on the upper side, which the players endeavour to loss or pitch so that they will encircle a pin or peg driven into the ground, or to come nearer to this peg than their opponents. The peg is called ...
— Outdoor Sports and Games • Claude H. Miller
... in such a way that it seemed to me suffocation must be imminent. I approached him, and put down my head to look into his face. As I did so I saw a roundish black object on the oil-cloth floor not far from the toe of his boot. The lamplight was reflected at a single point from its convex surface. I put down my hand and touched it. It was liquid. I looked at my fingers—they were not black, but red. I think (but am not sure) that I screamed aloud. I shrank to the other end of the carriage, and it was some moments before I had ...
— Masterpieces of Mystery - Riddle Stories • Various
... crestfallen air. "And I thought I was acting the part of a person who was not mad about her to the life. Well, I never was any good at dissembling. I shouldn't wonder if even old Peppmueller noticed something through his double convex lenses. But however crazy I may have been as an undeclared suitor, I am going to be much worse now. Here's the place," he broke off, as the cab rushed down a side-street and swung round a corner into a broad and populous thoroughfare. "We're there already." ...
— The Woman in Black • Edmund Clerihew Bentley
... circular in shape. It is convex anteriorly and projects forward from the sclerotic in the same manner that a watch glass does from its case. This layer covers what we call ...
— Mother's Remedies - Over One Thousand Tried and Tested Remedies from Mothers - of the United States and Canada • T. J. Ritter
... roof was constructed of the common, half-round Cuban tiling, each piece about two feet long. These tiles were laid in parallel rows from ridge-pole to eave, and these rows were locked together by other tiling laid bottom side up over them. Where the convex faces of the lower layer overlapped, after the fashion of shingles, were numerous interstices due to imperfections in manufacture; more than one of these was large enough to form ...
— Rainbow's End • Rex Beach
... rang the sirens, and we spiraled, descending further. The mountain tops were now close beneath us. Clouds were overhead, white masses with blue sky behind them. A day of brilliant sunlight. But soon, with our forward cruising, it was night. The sunlight dropped beneath the sharply convex horizon; the sea and the land ...
— Brigands of the Moon • Ray Cummings
... flat part of the reef, which dries at low water: the edge either consists of a convex mound, as represented, or of rugged points, like those a little farther seaward, ...
— Coral Reefs • Charles Darwin
... learned that the convex outside curve of wings allowed the wind to escape over them, while the under side, being concave, held every breath. Thus the upward stroke did not simply counterbalance the downward and keep him ...
— Jimbo - A Fantasy • Algernon Blackwood
... discrimination a man has at some time shown, if he falls asleep in his chair? or if he laugh and giggle? or if he apologize? or is infected with egotism? or thinks of his dollar? or cannot go by food? or has gotten a child in his boyhood? Of what use is genius, if the organ is too convex or too concave and cannot find a focal distance within the actual horizon of human life? Of what use, if the brain is too cold or too hot, and the man does not care enough for results to stimulate him to experiment, and hold him up in it? or if the ...
— Essays, Second Series • Ralph Waldo Emerson
... comes from a French word signifying a bald pate (caboche, from Latin cabo, a head). The usual round cabochon cut closely resembles the top of a head in shape. Cabochon cut stones usually have a flat base, but sometimes a slightly convex base is used, especially in opals and in moonstones, and some stones of very dense color are cut with a concave base to thin them and thus to reduce their color. The contour of the base may be round, or oval, or square, or cushion shape, or heart shape or of any regular form. The ...
— A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public • Frank Bertram Wade
... young, and her looks were not unpleasing. Her thickly-matted hair was ornamented with kangaroo teeth; and to her shoulder, closely clung a native tailless bear, whose appearance could not do otherwise than excite a smile. With convex staring eyes—hairless nose—and white ruff of fur round his face—he very closely resembled in physiognomy, some grey-whiskered guzzling citizen. The well-trained horses gave no trouble, as they entered the punt; and the smiling boatman, ...
— A Love Story • A Bushman
... languor held his limbs, Scarce aught admired he, yet he this admired; And thus addressed him then the conscious guide. "Beyond that river lie the happy fields; From them fly gentle breezes, which when drawn Against yon crescent convex, but unite Stronger with what they could not overcome. Thus they that scatter freshness through the groves And meadows of the fortunate, and fill With liquid light the marble bowl of earth, And give her blooming ...
— Gebir • Walter Savage Landor
... a surf-board is indispensable: some five feet in length; the width of a man's body; convex on both sides; highly polished; and rounded at the ends. It is held in high estimation; invariably oiled after use; and hung up conspicuously in the dwelling of ...
— Mardi: and A Voyage Thither, Vol. I (of 2) • Herman Melville
... lenses were made, one plano-convex, and the other plano-concave, and these were placed in a tube made of sheet copper. It was tested on distant objects; and behold! they were magnified by three. Would this tube show the stars magnified? Galileo knew of no reason why it should not, but he paced his room in ...
— Little Journeys to the Homes of the Great - Volume 12 - Little Journeys to the Homes of Great Scientists • Elbert Hubbard
... aunt! my poor deluded aunt! Her hair is almost gray; Why will she train that winter curl In such a spring-like way? How can she lay her glasses down, And say she reads as well, When, through a double convex lens, She just makes out ...
— Initial Studies in American Letters • Henry A. Beers
... epoch of the insurrection of the 5th and 6th of June, it was still, in many localities, nearly the same ancient sewer. A very great number of streets which are now convex were then sunken causeways. At the end of a slope, where the tributaries of a street or cross-roads ended, there were often to be seen large, square gratings with heavy bars, whose iron, polished by the footsteps of the ...
— Les Miserables - Complete in Five Volumes • Victor Hugo
... gold, alabaster, or jet—it is certain that the idea thereby imprinted in our mind is of a flat circle variously shadowed with several degrees of light and brightness coming to our eyes. But we having by use been accustomed to perceive what kind of appearances convex bodies are wont to make in us, what alterations are made in the reflections of light by the difference of the sensible figures of bodies, the judgment presently, by an habitual custom, alters the appearances into their causes; so that from that which is truly a variety of shadow or colour collecting ...
— The World's Greatest Books—Volume 14—Philosophy and Economics • Various
... leaves make shadow with their sheen. But presently A velvet flute-note fell down pleasantly Upon the bosom of that harmony, And sailed and sailed incessantly, As if a petal from a wild-rose blown Had fluttered down upon that pool of tone, And boatwise dropped o' the convex side And floated down the glassy tide, And clarified and glorified The solemn spaces where the ...
— Lippincott's Magazine of Popular Literature and Science, Vol. 15, - No. 90, June, 1875 • Various
... these birds is slow, unsteady, and affords but little amusement to the sportsman. From the disproportionately small, convex, thin-quilled, wing,—so thin, that a vacant space, half as broad as a quill appears between each,—the flight may be said to be a sort of fluttering more than any thing else: the bird giving two or three ...
— The Mirror of Literature, Amusement, and Instruction - Vol. 19, Issue 550, June 2, 1832 • Various
... character of the lake or stream. If the current is but slight, they build the dam almost straight; but where the water runs at a rapid rate, it is almost always constructed with a considerable curve, the convex side towards the stream. Frequently, in such cases, if there is any small island in the centre, it is taken advantage of, and the dam is built out to it from either bank. They make use of a variety of materials; employing driftwood when it can be obtained, to save themselves ...
— The Western World - Picturesque Sketches of Nature and Natural History in North - and South America • W.H.G. Kingston
... in afterwards and jumped upon the cover of the trunk so that it shut. Very demurely I sat down before the open fire by my grandmother's easy chair, rocking furiously, watching my own face in the bright andirons, whose convex surfaces reflected first a "small Nancy" far off, then as I rocked forward, a large and distorted figure. My rapid motions made such rapid caricatures that I remained absorbed and attentive. My grandmother, not seeing the cause of my content, decided (as she ...
— Connor Magan's Luck and Other Stories • M. T. W.
... the Lisbon bean-pod, from its exact resemblance to that vegetable, and affirms it to be the most curious of European craft, which we can readily believe. "Take a well-grown bean-pod," he says, "and put it on its convex edge, and then put two little sticks, one in the centre and one at the bows, raking forward, for the masts, and another in the bows, steeving up, for the bowsprit, and another astern for a boomkin or outrigger, and then you have before you the boat in question." These boats carry a ...
— Man on the Ocean - A Book about Boats and Ships • R.M. Ballantyne
... doubt whether he really had any mission at all, whether he had not rather yielded to deceitful suggestions, believed in the reality of phantoms, and been deceived by chance appearances. He saw the spiritual and moral features of his friends and disciples, deformed as in a convex mirror; he felt a disheartening certainty that all he had hoped of them was vain. Then again that sad, tender little song returned, no longer beseeching but full of pity, of a pity comprehending all his bitter struggle, the sorrowing pity of some unknown spirit that ...
— The Saint • Antonio Fogazzaro
... Kepler, who was by no means a man of one idea, it ought to be here recorded that he was the first to suggest that a telescope made with both lenses convex (not a Galilean telescope) can have cross wires in the focus, for use as a pointer to fix accurately the positions of stars. An Englishman, Gascoigne, was the first ...
— History of Astronomy • George Forbes
... made red hot, placed between a pair of rollers, one of which is convex and the other concave, and comes out in a semicircular trough shape; again heated, and again pressed by smaller rollers, by which the cylinder is nearly completed. A long bar of iron is passed through the cylinder, it is thrust into the fire again, and, when red ...
— Rides on Railways • Samuel Sidney
... annuals or perennials. The spikelets are plano-convex, orbicular to oblong, obtuse, secund, 2-ranked on the flattened or triquetrous rachis of the spike-like branches of a raceme, one-flowered and falling off entire from the very short or obscure pedicels. There are three glumes, all more or less ...
— A Handbook of Some South Indian Grasses • Rai Bahadur K. Ranga Achariyar
... workman. No one that I ever met with could go beyond Henry Maudslay himself in his dexterous use of the file. By a few masterly strokes he could produce plane surfaces so true that when their accuracy was tested by a standard plane surface of absolute truth, they were never found defective; neither convex, nor concave, nor ...
— James Nasmyth's Autobiography • James Nasmyth
... estate when she died; for she had already as good as adopted her niece, from whom she received all the attention and watchful tenderness which she needed continually, by reason of age and manifold infirmities. But while our life has its outer convex side, which magnifies its advantages before the world, it has its inner concave side also, which reduces the outer circumstances of prosperity into littleness, when "the heart knoweth its own bitterness, and a stranger doth ...
— Working in the Shade - Lowly Sowing brings Glorious Reaping • Theodore P Wilson
... the first night after his return to Padua, he found, in the doctrines of refraction, the principle which he sought. He placed at the ends of a leaden tube two spectacle glasses, both of which were plain on one side, while one of them had its other side convex, and the other its second side concave, and having applied his eye to the concave glass, he saw objects pretty large and pretty near him. This little instrument, which magnified only three times, he carried in triumph to Venice, where it excited ...
— The Martyrs of Science, or, The lives of Galileo, Tycho Brahe, and Kepler • David Brewster
... is 30 in each case; also the specific gravity of each substance is given. Then he discusses the reason why refraction takes place. Promises to write on the Rainbow; but will merely say at present that it is to be explained by the reflection on the concave superficies and the refraction at the convex superficies ...
— Thomas Hariot • Henry Stevens
... polished, usually in convex forms, for small ornamental objects, but its use for this purpose is less extensive than that of hypersthene. It often has a more or less distinct fibrous structure, and when this is pronounced the sheen has a certain ...
— Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 - "Brescia" to "Bulgaria" • Various
... oak. Two or three pairs were alike, for they were in pairs, each pair having one of the sides of a shape resembling different parts of the ship's bottom, with the exception that they were chiefly concave, while the bottom of a vessel is mainly convex. At one extremity each pair was firmly connected by a short, massive, iron link, of about two feet in length; and, at its opposite end, a large eye-bolt was driven into each stick, where it was securely forelocked. When the Walrus ...
— The Monikins • J. Fenimore Cooper
... daughter of Earth and Water, And the nursling of the Sky: I pass through the pores of the ocean and shores; I change, but I cannot die. For after the rain, when with never a stain The pavilion of heaven is bare, And the winds and sunbeams with their convex gleams Build up the blue dome of air, I silently laugh at my own cenotaph, And out of the caverns of rain, Like a child from the womb, like a ghost from the tomb I arise, and ...
— The Home Book of Verse, Vol. 3 (of 4) • Various
... rivetting if iron lasts were used. A Leicester man, in a small way, took up the notion, and made a fortune at it, the real inventor only getting good orders. Ellis's patent boot studs to save the sole, and the Euknemida, or concave-convex fastening ...
— Showell's Dictionary of Birmingham - A History And Guide Arranged Alphabetically • Thomas T. Harman and Walter Showell
... in: Body smaller (see measurements); tail shorter, hind foot smaller; upper parts dull brownish instead of reddish-brown, underparts paler, hairs of feet whitish instead of brownish; skull smaller, especially in females, narrower; dorsal profile of skull concave or flat (females) rather than convex; zygomatic breadth less; rostrum narrower and shallower; nasals actually shorter, but relatively longer in relation to length of skull; width across mastoid processes of squamosal shorter; maxillary ...
— Four New Pocket Gophers of the Genus Cratogeomys from Jalisco, Mexico • Robert J. Russell
... the point of intersection, or between the tangents to both curves at their common point. Various names (now rarely, if ever, used) have been given to particular cases:—amphicyrtic (Gr. [Greek: amphi], on both sides, [Greek: kyrtos], convex) or cissoidal (Gr. [Greek: kissos], ivy), biconvex; xystroidal or sistroidal (Gr. [Greek: xystris], a tool for scraping), concavo-convex; amphicoelic (Gr. [Greek: koilae], a hollow) ...
— Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1 • Various
... and lastly flake it off as thick as they can, by driving in wedges. The sword is a large heavy piece of wood, shaped like a sabre, and capable of inflicting a mortal wound. In using it they do not strike with the convex side, but with the concave one, and strive to hook in their antagonists so as to have them under their blows. The fishing-lines are made of the bark of a shrub. The women roll shreds of this on the inside of ...
— A Complete Account of the Settlement at Port Jackson • Watkin Tench
... catching wild chickens invented by the Christianized natives is also used to some extent by the Negritos. This trap consists of a lot of small nooses of rattan or bejuco so arranged on a long piece of cane that assisted by pegs driven into the ground they retain an upright position. This is arranged in convex form against a wall or thicket of underbrush so that a bird can not enter the space thus inclosed except by way of the trap. In this inclosed area is placed a tame cock whose crowing attracts the wild one. The ...
— Negritos of Zambales • William Allan Reed
... coast is broken by shallow bays. The reef is detached, elevated, and includes a lagoon about knee-deep, the unrestful spending-basin of the surf. The beach is now of fine sand, now of broken coral. The trend of the coast being convex, scarce a quarter of a mile of it is to be seen at once; the land being so low, the horizon appears within a stone-cast; and the narrow prospect enhances the sense of privacy. Man avoids the place—even his footprints are uncommon; but a great number of birds hover and pipe there ...
— In the South Seas • Robert Louis Stevenson
... white, through which rays of light were caught and sent dancing. Along the wall on the left-hand side presses were overcharged with dusty tea-services. On the right were square grey windows, under which the convex sides of salad-bowls sparkled in the sun; and from rafter to rafter, in garlands and clusters like grapes, hung gilded mugs bearing devices suitable for children, and down the middle of the floor a terrace was ...
— A Mummer's Wife • George Moore
... objects seen through it look smaller. It is also called a "minus" glass, while the magnifying glass is called a "plus" glass. The shape of the glasses or spectacles prescribed for an eye is just the opposite of that of the eye. If the eye is too flat (long-sighted), you put on a bulging, or convex, glass; and if the eye is too bulging (short-sighted), a hollow, or concave, glass. Other eyes are irregularly shaped in front and bulge more in one direction than another, like an orange. This defect ...
— A Handbook of Health • Woods Hutchinson
... six days it is sealed over with a convex waxen lid. It is now hidden from our sight for about twelve days, when it bites off the cover, and comes forth a perfect bee. The period from the egg to the perfect bee varies from twenty to twenty-four days; average about twenty-two for workers, ...
— Mysteries of Bee-keeping Explained • M. Quinby
... It was good, old-fashioned furniture of a certain dignity. The grandfather clock by the wall, the tall mahogany bookcase, the sofa and chairs covered in red damask, were all good. There was a round convex mirror above the fireplace and some pictures on the wall. The fire burned brightly, toning down somewhat the hard ...
— Love of Brothers • Katharine Tynan
... order to give an expression to the eyes, various devices were resorted to. The eyelids of the bust of Pericles on the Acropolis had bevelled edges, and the eyeballs of the "Apollo Belvedere" are exceptionally convex, to produce the effect of looking to a distance, although the human eye when gazing afar off becomes slightly contracted. The head of the "Venus de Medici" is finely shaped, but small, and her features ...
— The Life and Genius of Nathaniel Hawthorne • Frank Preston Stearns
... and had, moreover, no artillery support of any kind. Yet as one examined the hill it became evident that its strength was apparent rather than real. Its slopes were so steep that they presented no good field of fire. Its crest was a convex curve, over and down which the defenders must advance before they could command the approaches, and when so advanced they would be exposed without shelter of any kind to the fire of the covering troops. The salient was so prominent and jutted ...
— London to Ladysmith via Pretoria • Winston Spencer Churchill
... AND SPEEDS Lack of Improvements in Machines. Men Exploited and not Machines. Abnormal Flying of no Value. The Art of Juggling. Practical Uses the Best Test. Concaved and Convex Planes. How Momentum is a Factor in Inverted Flying. The Turning Movement. When Concaved Planes are Desirable. The Speed Mania. Uses of Flying Machines. Perfection in Machines Must Come Before Speed. The Range of its Uses. ...
— Aeroplanes • J. S. Zerbe***
... at the western, or lower horn of the crescent; the second occupied nearly the whole of the southern side of the sheet, or the cavity of the half-moon; while the latter was mistress of the whole of the convex border, and of the eastern horn. The shores of Savoy are composed, with immaterial exceptions, of advanced spurs of the high Alps, among which towers Mont Blanc, like a sovereign seated in majesty in the midst of a brilliant ...
— The Headsman - The Abbaye des Vignerons • James Fenimore Cooper
... the inner surface of the comb was concave, and the outer surface convex, the bees made the cells on the former much smaller, and those on the latter much larger, ...
— The Dawn of Reason - or, Mental Traits in the Lower Animals • James Weir
... of a dance in the surrounding depreciation. And then than whom is the pleasure. A life was sardine to play. A land was thinner. Than which side was tacit. The noise was a pimple. A convex is ...
— Matisse Picasso and Gertrude Stein - With Two Shorter Stories • Gertrude Stein
... coarse analogy, consider a parallel-sided piece of glass through which light passes. It forms no picture. Shape it so as to be bi-convex, and a picture appears ...
— The Life and Letters of Thomas Henry Huxley Volume 3 • Leonard Huxley
... opened the heavy door. Inside there was a handsome ceiling, but little furniture. Most of the floor was occupied by a pile of thick circular blocks of stone, each of which had a single letter deeply cut on its slightly convex upper surface. 'What is the meaning of ...
— Ghost Stories of an Antiquary - Part 2: More Ghost Stories • Montague Rhodes James
... will be noticed as this work proceeds. Late in life, when he took to glasses, Burton used to say "My duality is proved by my eyes alone. My right eye requires a No. 50 convex lens, my left a No. 14." His assiduous application to his studies now brought about an illness, and, having returned to Bombay, he obtained two years' leave of absence to ...
— The Life of Sir Richard Burton • Thomas Wright
... noise, which, together with the motion of the water, makes very much the impression of a steamboat in motion; and, without knowing that it had been already previously so called, we gave to it the name of the Steamboat Spring. The rock through which it is forced is slightly raised in a convex manner, and gathered at the opening into an urn mouthed form, and is evidently formed by continued deposition from the water, and colored bright red ...
— The Life of Kit Carson • Edward S. Ellis
... should be about 3/8" in diameter and nicely rounded, polished and blued. We would not advise jeweling the pivot holes, because there is but slight friction, except to the foot of the balance pivot, which should be jeweled with a plano-convex garnet. ...
— Watch and Clock Escapements • Anonymous
... bottom. When, however, they find that there is not depth enough for this purpose, they build a dam across the stream, at a convenient distance below their habitations. If the current is gentle, the dam is made perfectly straight; but if rapid, it is constructed with a considerable curve, the convex side being towards the upper part of the stream. The materials employed are drift wood, green willows, birch, and poplar; these are placed horizontally, and kept down by mud and stones. So strong do these dams become, that they are capable of resisting a considerable force both of ...
— Afar in the Forest • W.H.G. Kingston
... laughing himself, when he remembered his distance from fairs. Arrived at home, our first care was to turn the turtle on his back, to get the excellent meat out of the shell. With my hatchet I separated the cartilages that unite the shells: the upper shell is convex, ...
— The Swiss Family Robinson; or Adventures in a Desert Island • Johann David Wyss
... restored. The nature of the change was grotesque, following no fixed rule. The nearest resemblance to it that I know, is the distortion produced in your countenance when you look at it as reflected in a concave or convex surface—say, either side of a bright spoon. Of this phenomenon I first became aware in rather a ludicrous way. My host's daughter was a very pleasant pretty girl, who made herself more agreeable to me than most of those about me. For some days my companion-shadow had been less obtrusive than usual; ...
— Phantastes - A Faerie Romance for Men and Women • George MacDonald
... taken his chance on that side landing upward. Generally a coin is used, but a stone will do as a substitute, one side being marked. Shells may also be used, the throw to be determined by the light or dark side or the convex or concave side falling upward. The method of tossing is the same for any of these articles. One player tosses the coin in the air, the players having chosen "heads" or "tails"; the side of the coin having the date on it is called "heads," the other ...
— Games for the Playground, Home, School and Gymnasium • Jessie H. Bancroft
... the teeth is pronounced but asymmetrical, in that the lateral surface of each blade is more convex ...
— Two New Pelycosaurs from the Lower Permian of Oklahoma • Richard C. Fox
... that my fall was broken by something half-way down. This proved to be correct, as I afterwards learnt. The ship chanced to be under full canvas at the time, and the maintopsail, swollen out by the fresh breeze, had caught me on its convex side as I came down. From this I had bounded off again, but the impetus of the fall had been thus lessened; and the second pitch into the sea was not so violent as it would otherwise have been. Otherwise, ...
— Ran Away to Sea • Mayne Reid
... London is grown so infamously bad, that we live here in the same solitude as we should do if cast on a rock in the middle of the ocean, and all the Londoners tell us there is between them and us a great, impassable gulf of mud. There are two roads through the Park, but the new one is so convex and the old one so concave, that by this extreme of faults they agree in the common one of being, ...
— A History of English Prose Fiction • Bayard Tuckerman
... sidepocket. From Gillen's hairdresser's window a composite portrait shows him gallant Nelson's image. A concave mirror at the side presents to him lovelorn longlost lugubru Booloohoom. Grave Gladstone sees him level, Bloom for Bloom. he passes, struck by the stare of truculent Wellington, but in the convex mirror grin unstruck the bonham eyes and fatchuck cheekchops of ...
— Ulysses • James Joyce
... brighter, and then whiter, like snow; every minute it approached nearer, until at last, full before them and beneath them, there rolled a giant wave, extending across the bed of the river, crescent-shaped, with its convex side advancing forwards, and its ends following after within short distance from the shore. The great wave rolled on, one mass of snow-white foam, behind which gleamed a broad line of phosphorescent lustre from the agitated waters, which, in the gloom of night, ...
— Lost in the Fog • James De Mille
... searched for this object, and, though the night was far from favourable, had distinct though brief glimpses of it with the moderate magnifying power of 100. Mersenius is a formation about 40 miles in diameter, with a prominently convex interior, containing much detail which has received more than ordinary attention from observers. It has, moreover, been specially mapped by Schmidt and others, yet no trace of this rill was noted, though objects much more minute and difficult have not been ...
— The Moon - A Full Description and Map of its Principal Physical Features • Thomas Gwyn Elger
... me, I grew great to myself in the possession of a wonderful secret. Day after day I visited the cave and examined this phenomenon—and yet another more marvellous in its connection with the first. The huge lens was a simple accident of curved rocks and convex water, planed smooth as crystal. In other than a droughty summer it would probably not exist; the spouting torrent would overwhelm it—but I know not. Was not this astonishing enough? Yet Nature had worked a second miracle to mock in anticipation the self-sufficient plagiarism ...
— At a Winter's Fire • Bernard Edward J. Capes
... struggling forth a convex shield that, when floating, showed its lower face smooth and yellow. The four wrinkled paws and the serpent-like head of the turtle were emerging from its cuirass of tortoise-shell. The little sea horses, slender and graceful as chess-pieces, were ...
— Mare Nostrum (Our Sea) - A Novel • Vicente Blasco Ibanez
... and son had reached the main road, and other horsemen and horsewomen issued from the gates of farms on either side, taking their way to the meeting-house. Only two or three families could boast vehicles,—heavy, cumbrous "chairs," as they were called, with a convex canopy resting on four stout pillars, and the bulging body swinging from side to side on huge springs of wood and leather. No healthy man or woman, however, unless he or she were very old, travelled otherwise ...
— The Story Of Kennett • Bayard Taylor
... over and over: there was nothing more. I examined the other leaves of the plant—on both sides, concave and convex, I examined them—not a word more could I find. What I had read was all ...
— The War Trail - The Hunt of the Wild Horse • Mayne Reid
... the convex surface of the frustum of a regular pyramid is half the product of the sum of the perimeters of its bases by the altitude of either ...
— Daddy-Long-Legs • Jean Webster
... lower half of the log and the other the upper half. In this way, it is possible to cut very large logs with the circular-saw and with less waste. The circular-saw is not a perfectly flat disc, but when at rest is slightly convex on one side and concave on the other. This fullness can be pushed back and forth as can the bottom of an oil-can. When moving at a high rate of speed, however, the saw flattens itself by centrifugal force. This enables it to ...
— Handwork in Wood • William Noyes
... to the sacred toilet. Nay, when the taper fingers had at last subjugated the ends of the knot, her mind was not quite easy, till, by a manoeuvre peculiar to the female hand, she had made her palm convex, and so applied it with a gentle pressure to the centre of the knot—a sweet little coaxing hand-kiss, as much as to say, "Now be a good knot, and stay so." The palm-kiss was bestowed on the ribbon, but the wearer's ...
— The Cloister and the Hearth • Charles Reade
... daring of speculation than in the case of Lewes's theory of the relations of the subjective and objective. He interprets matter and mind, motion and feeling, objective and subjective, as simply the outer and inner, the concave and convex, sides of one and the same reality. Mind is the same as matter, except that it is viewed from a different aspect. In this opinion he resembles Schelling more than any other thinker, as he does in some other of his speculations. As a monist, his conclusions ...
— George Eliot; A Critical Study of Her Life, Writings & Philosophy • George Willis Cooke
... Chamomile (matricaria chamomilla) which has weaker properties, and grows erect, with several flowers at a level on the same stalk. The true Chamomile grows prostrate, and produces but [85] one flower (with a convex, not conical, yellow disk) from each stem, whilst its leaves are divided into hair-like segments. The flowers exhale a powerful aromatic smell, and present a peculiar bitter to the taste. When distilled with water they yield a small quantity ...
— Herbal Simples Approved for Modern Uses of Cure • William Thomas Fernie
... evening at a quarter to eight Thea was dressed and waiting in the boarding-house parlor. She was nervous and fidgety and found it difficult to sit still on the hard, convex upholstery of the chairs. She tried them one after another, moving about the dimly lighted, musty room, where the gas always leaked gently and sang in the burners. There was no one in the parlor but the medical student, ...
— Song of the Lark • Willa Cather
... a short close sheath, about 1 inch in length and scarcely 1/12 inch in width, yellowish-green, numerous, stiff, curved or twisted, cross-section showing two fibrovascular bundles; outline narrowly linear; apex sharp-pointed; outer surface convex, inner concave ...
— Handbook of the Trees of New England • Lorin Low Dame
... finding on the highest peak of one range (about 700 feet above the sea) a great arched fragment, lying on its convex side, or back downwards. Must we believe that it was fairly pitched up in the air, and thus turned? Or, with more probability, that there existed formerly a part of the same range more elevated than the point ...
— A Naturalist's Voyage Round the World - The Voyage Of The Beagle • Charles Darwin
... all quarters at pleasure; capable of not much more than one man, as I conceive, and perhaps at no great ease; exactly close and dark,—save at one hole, about an inch and a half in the diameter, to which he applies a long perspective Trunk, with the convex glass fitted to the said hole, and the concave taken out at the other end, which extendeth to about the middle of this erected Tent: through which the visible radiations of all the Objects without are intromitted, falling upon a Paper, which is ...
— History Of Friedrich II. of Prussia, Vol. III. (of XXI.) - Frederick The Great—The Hohenzollerns In Brandenburg—1412-1718 • Thomas Carlyle
... is, however, overcome by the act of "accommodation." There is a beautiful transparent, double-convex body, about one-third of an inch thick, which looks very much like an ordinary glass lens, and is situated in the eye just back of the pupil. This is what is known as the crystalline lens, and the rays of light ...
— The Home Medical Library, Volume II (of VI) • Various
... with irregular, unequal, small, granular plates, each furnished with a more or less prominent central spine, and with a series of large, conical, convex, acute spines; head and limbs covered with similar scales and spines; head small, with very large spines over each of the eyebrows; tail with irregular rings of large acute spines; femoral and subanal pores none; teeth small, subequal; toes 5.5, short, covered ...
— Journals Of Two Expeditions Of Discovery In North-West And Western Australia, Vol. 2 (of 2) • George Grey
... the cardinal, grave and coldly wise, His scarlet gown and robes of cobweb lace Trailed on the marble floor; with convex glass ...
— Romance of Roman Villas - (The Renaissance) • Elizabeth W. (Elizbeth Williams) Champney
... the Voice you must figure to yourself as a whitish plump man, a little under the middle size and age, with such blue eyes as many Irishmen have, and agile in his movements and with a slight tonsorial baldness—a penny might cover it—of the crown. His front is convex. He droops at times like most of us, but for the greater part he bears himself as valiantly as a sparrow. Occasionally his hand flies out with a fluttering gesture of illustration. And his Voice (which is ...
— A Modern Utopia • H. G. Wells
... attacks and carries off all kinds of insects, especially wingless species, such as maggots, caterpillars, larvae of cockroaches, etc. An eyeless species,[33] the Eciton erratica, rapidly forms covered passages under which to advance, and shows great skill in fitting the keystone to these convex arcades.[34] ...
— The Industries of Animals • Frederic Houssay |
