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Concavity   Listen
noun
Concavity  n.  (pl. concavities)  A concave surface, or the space bounded by it; the state of being concave.






Collaborative International Dictionary of English 0.48








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"Concavity" Quotes from Famous Books



... round her. The baggage-camels were as weary as their riders, and again and again they had to jerk at their nose-ropes to prevent them from lying down. From horizon to horizon stretched that one hugh arch of speckless blue, and up its monstrous concavity crept the inexorable sun, like some splendid but barbarous deity, who claimed a tribute of human suffering as ...
— A Desert Drama - Being The Tragedy Of The "Korosko" • A. Conan Doyle

... observer they appear precisely alike; it is, nevertheless, essential to the effect that the variation, though minute, should exist. With respect to the pseudoscope—which makes the outside of a teacup appear as the inside, and the inside as the outside; which transforms convexity into concavity, and the reverse; and a sculptured face into a hollow mask; which makes the tree in your garden appear inside your room, and the branches farthest off come nearest to the eye; and which, when you look at your pictures, represents them as sunk into a deep recess in ...
— Chambers's Edinburgh Journal, No. 426 - Volume 17, New Series, February 28, 1852 • Various

... is no element of fire, which must be held with this opinion here delivered; for if wee suppose a world in the Moone, then it will follow, that the spheare of fire, either is not there where 'tis usually placed in the concavity of his Orbe, or else that there is no such thing at all, which is most probable, since there are not any such solid Orbs, that by their swift motion might heare and enkindle the adjoyning aire, which is imagined to be the reason of that element. ...
— The Discovery of a World in the Moone • John Wilkins

... and is then transferred for a similar period to the stronger glycerine solution, after which it may be mounted in the jelly without danger of shrinking. A specimen-jar being two-thirds filled with melted jelly, the half-eye is placed in it, the concavity upwards. When every interstice is filled, it is turned over (care being taken to avoid the inclusion of an air-bubble), and held in a central position in contact with the bottom of the jar. When cold and firmly coagulated, the jelly is coated over with white varnish. A few days ...
— Practical Taxidermy • Montagu Browne

... side of the thorax. While the arm hangs close to the side, the axillary space does not (properly speaking) exist; and in this position, the axillary vessels and nerves make a general curve from the clavicle at the point K, Plate 14, to the inner side of the arm, the concavity of the curve being turned towards the thoracic side. But when the arm is abducted from the side, and elevated, the vessels which are destined to supply the limb follow it, and in this position they take, in reality, a serpentine course; the first curve of which is described, in reference ...
— Surgical Anatomy • Joseph Maclise

... first dramatic appearance, was one of the most astonishing things that we saw in the whole course of our adventures. It was not a cerulean vault like that which covers the earth in halcyon weather, but an indescribably soft, pinkish-gray concavity that seemed nearer than the sky and yet farther than the clouds. Here and there, far beneath it, but still at a vast elevation, floated delicate gauzy curtains, tinted like sheets of mother-of-pearl. The sun was no longer visible, ...
— A Columbus of Space • Garrett P. Serviss

... strand lies the elevated platform already spoken of, accessible from above by a sloping ravine, the bed of a stream running only when it rains. As said, it is only an acre or so in extent, and occupying the inner concavity of the semicircle. The beach is not visible from it, this concealed by the dry reef which runs across it as the chord of an arc. Only a small portion of it can be seen through the portal which admits the tidal flow. Beyond, stretches the open sea outside the surf, with ...
— The Flag of Distress - A Story of the South Sea • Mayne Reid

... went there with some friends to see an immense telescope, which he has made almost entirely without aid, preparing the glasses as far as possible himself, and sending them away merely to have their concavity changed. He showed us all his treasures with the greatest delight, explaining in English, but substituting Welsh when at a loss. He has scarcely ever been at school, but has learnt English entirely from books. Among other things he showed us were a Greek Testament and a Hebrew Bible, ...
— Men of Invention and Industry • Samuel Smiles

... the larva, as a convex ceiling would. The subsequent disks, when the pile is numerous, are a little larger; they only fit the mouth by yielding to pressure and becoming concave. The Bee seems to make a point of this concavity, for it serves as a mould to receive the curved ...
— Bramble-bees and Others • J. Henri Fabre

... the concave downwards, was fitted into the recess turned out in the neck of the press-cylinder, at the place formerly used as a stuffing-box. Immediately on the high pressure water being turned on, it forced its way into the leathern concavity and 'flapped out' the bent edges of the collar; and, in so doing, caused the leather to apply itself to the surface of the rising ram with a degree of closeness and tightness so as to seal up the joint the closer exactly ...
— Industrial Biography - Iron Workers and Tool Makers • Samuel Smiles

... People think of the clouds as about as large as they look—forty yards over, perhaps; they see generally that they are solid bodies subject to the same laws as other solid bodies, roundish, whitish, and apparently suspended a great way under a high blue concavity. So that these ideas be tolerably given with smooth paint, they are content, and call it nature. How different it is from anything that nature ever did, or ever will do, I have endeavored to show; but I cannot, and do not, expect the contrast to be fully felt, unless the reader will actually go ...
— Modern Painters Volume I (of V) • John Ruskin

... brain: I'VE been the brain that lit thy dull concavity! The human race Invest MY face With thine expression of unchecked depravity, Invested with a ghastly reciprocity, I'VE been responsible for thy monstrosity, I, for thy wanton, blundering ...
— The Bab Ballads • W. S. Gilbert

... are, say, half an inch thick. These discs are turned convex or concave on one face according as they are to be employed in the production of concave or convex glass surfaces. The proper degree of convexity or concavity may be approximated to by turning with ordinary turning tools, using a circular arc cut from zinc or glass (as will be described) as a "template" or pattern. This also is ...
— On Laboratory Arts • Richard Threlfall

... long-bodied, and slender, like swallows, with red bills and feet, white breast, and slate-coloured wings; these, instead of perching, like the rest of their feathered associates, upon the trees, nestled in the concavity of the long palm-leaves, far enough from the stem, to be rocked gently by the undulating motion of the leaf, which a breath of wind, or the slightest stirring of the birds in these swinging nets was sufficient to produce. But by far the most numerous and singular portion of the ...
— The Island Home • Richard Archer

... form of hanging-drop slide is made in which a circular or oval concavity or "cell" is ground out of the centre of a 3 by 1 slip. These are more expensive, less convenient to work with, and are more easily contaminated by drops of material under examination, and should ...
— The Elements of Bacteriological Technique • John William Henry Eyre

... equal length. When in position it is slightly bent, say four per cent, of its length. The frame should be of light spruce, the same size as the cross-pieces. Care must be taken to have the angles right. When the frame is finished, cover loosely with manila paper, so that there will be some concavity on the face of the kite on each side below the cross-stick, so that it will belly like a sail; bind the edges with thin wire which stretches less than string. This kite will fly in a very light breeze. The ...
— Healthful Sports for Boys • Alfred Rochefort

... woman. She had a slim perfect figure; quite simply she carried her head so high and her shoulders so square that her back seemed to be hollowed out, and no tightness on the part of a bodice could hide this charming concavity. Her face was handsome with its large regular features; one noticed the abundant black hair under the hat, the thick eyebrows, the brown and opaque skin, the teeth impeccably white, and the firm, unyielding mouth and chin. Underneath ...
— Leonora • Arnold Bennett

... in them both to become portions of spheres. Either of them may become convex, and the other concave, with various degrees of curvature. A plane surface is the line of separation between convexity and concavity, and is most difficult to hit; it is more easy to make a good circle than to produce a straight line. A similar difficulty takes place in figuring specula for telescopes; the parabola is the surface which separates the hyperbolic from the elliptic figure, and is the most difficult to form. ...
— On the Economy of Machinery and Manufactures • Charles Babbage

... Justice, we were led up to the fatal Pit or Hole, down which many had been cast headlong. There we found one poor Soldier alive, who, upon his throwing in, had catch'd fast hold of some impending Bushes, and sav'd himself on a little Jutty within the Concavity. On hearing us talk English he cry'd out; and Ropes being let down, in a little Time he was drawn up; when he gave us an ample Detail of the whole Villany. Among other Particulars, I remember he told me of a very narrow Escape he had in that obscure Recess. A poor ...
— Military Memoirs of Capt. George Carleton • Daniel Defoe

... sword, the small knife carried in the sword-sheath, and adzes and axes of various sizes. The blade of the knife is some three inches in length, resembling in general shape the blade of the sword; it is wider in proportion, but has the same peculiar convexity of the one side and concavity of the other in transverse section. The shaft is sunk into the end of a rod of hard wood and secured with gutta and fine rattan lashing. The handle of hard wood is about a foot in length, half an inch in diameter, and slightly bowed in the plane of the blade, the ...
— The Pagan Tribes of Borneo • Charles Hose and William McDougall

... primest aspect towards the sun setting, it is reported, and I have read in good antique and authentic authors, that there reside many soothsayers, fortune-tellers, vaticinators, prophets, and diviners of things to come; that Saturn inhabiteth that place, bound with fair chains of gold and within the concavity of a golden rock, being nourished with divine ambrosia and nectar, which are daily in great store and abundance transmitted to him from the heavens, by I do not well know what kind of fowls,—it may be that they are the same ravens which in the deserts ...
— Gargantua and Pantagruel, Complete. • Francois Rabelais

... sheer drop of 3 ft. was situated here. A double whirlpool of great magnitude was formed at the bottom of the rapid, the water revolving with such force that the concavity was gradually depressed for some 3 ft. and had a great hole in each centre. We shot that rapid. As Alcides on that occasion followed my instructions, the canoe shot past between the two whirlpools, and although ...
— Across Unknown South America • Arnold Henry Savage Landor

... CLAVUS, A. & S. Sporangium pileate, very much depressed, convex above and concave below, stipitate; the wall a dark-colored membrane, thickly covered with minute white crystals of lime, except the brown concavity underneath, the upper part breaking away, the lower persistent. Stipe short, erect, rugulose, brown or blackish, expanding at the base into a small hypothallus; the columella reduced to a thin layer of minute brown ...
— The Myxomycetes of the Miami Valley, Ohio • A. P. Morgan

... began to loom up, like deformed battleships and flat-tops in a smoke screen, their prows being the juncture of the natural curve of the off-blast side with the massive concavity of the ...
— The Night of the Long Knives • Fritz Reuter Leiber

... mouth of the stocking stretched, and Penrod manipulated the cat; but she left her hearty mark on both of them before, in a moment of unfortunate inspiration, she humped her back while she was upside down, and Penrod took advantage of the concavity to increase it even more than she desired. The next instant she was assisted downward into the gloomy interior, with excelsior already beginning to block the means ...
— Penrod and Sam • Booth Tarkington

... have constituted a river of magnitude, if it had constantly maintained such a supply of water, and had not become separated into branches, and lost among the immense marshes of this desolate and barren country, which seems here to form a vast concavity to receive them. It is impossible to arrive at any certain opinion as to what finally becomes of these waters, but I think it probable, from the appearance of the country, and its being nearly on a level with the sea, that they are partly ...
— Journals of Two Expeditions into the Interior of New South Wales • John Oxley

... every little while, the glorious anthems floated forth in majestic cadence, eddying in waves of harmony about the colonnade that stretched in dusky perspective from the great door to the altar, soaring above the distant arches, and swelling upwards in floods of melody, until the vast concavity of the vaulted nave was filled with a sea of sound. But a sultry heaviness weighed with the incense upon the air. Elder citizens glanced uneasily at one another, and the thoughts of many wandered anxiously from the sacred building. Outside, the streets were empty. ...
— Atlantic Monthly Vol. 3, No. 16, February, 1859 • Various

... microscopically examined, various devices are employed in the construction of reflecting telescopes to avoid the loss of light which would result—a loss which would be important even with the largest mirrors yet constructed. Thus, in Gregory's Telescope, a small mirror, having its concavity towards the great one, is placed in the axis of the tube and forms an image which is viewed through an aperture in the middle of the great mirror. A similar plan is adopted in Cassegrain's Telescope, a small convex mirror replacing the concave one. In Newton's Telescope a small ...
— Half-hours with the Telescope - Being a Popular Guide to the Use of the Telescope as a - Means of Amusement and Instruction. • Richard A. Proctor

... from fate and fortune. She had been born ugly; with broad, flat face like unto the moon at full, or a dish. Her back was a little humped, her arms disproportionately long, losing in plumpness what they gained in extension. She seemed to have no breasts at all, the chest forming a concavity in correspondence to the convexity of the back, with a smoothness much like the inner surface of a bowl. This perhaps was no disadvantage—under the conditions. So much for fate. But fortune had been no kinder. "Blooming" into girlhood, she had been attacked by smallpox. Matazaemon was busy, ...
— The Yotsuya Kwaidan or O'Iwa Inari - Tales of the Tokugawa, Volume 1 (of 2) • James S. De Benneville



Words linked to "Concavity" :   cup, hollowness, imprint, shape, indenture, solid, concave, fossa, depression, incurvation, corner, contour, impression, scoop, configuration, pocket, conformation, trough, concave shape, bowl, recession, pit, recess, niche, form, incurvature



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