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Refraction   Listen
noun
Refraction  n.  
1.
The act of refracting, or the state of being refracted.
2.
The change in the direction of ray of light, heat, or the like, when it enters obliquely a medium of a different density from that through which it has previously moved. "Refraction out of the rarer medium into the denser, is made towards the perpendicular."
3.
(Astron.)
(a)
The change in the direction of a ray of light, and, consequently, in the apparent position of a heavenly body from which it emanates, arising from its passage through the earth's atmosphere; hence distinguished as atmospheric refraction, or astronomical refraction.
(b)
The correction which is to be deducted from the apparent altitude of a heavenly body on account of atmospheric refraction, in order to obtain the true altitude.
Angle of refraction (Opt.), the angle which a refracted ray makes with the perpendicular to the surface separating the two media traversed by the ray.
Conical refraction (Opt.), the refraction of a ray of light into an infinite number of rays, forming a hollow cone. This occurs when a ray of light is passed through crystals of some substances, under certain circumstances. Conical refraction is of two kinds; external conical refraction, in which the ray issues from the crystal in the form of a cone, the vertex of which is at the point of emergence; and internal conical refraction, in which the ray is changed into the form of a cone on entering the crystal, from which it issues in the form of a hollow cylinder. This singular phenomenon was first discovered by Sir W. R. Hamilton by mathematical reasoning alone, unaided by experiment.
Differential refraction (Astron.), the change of the apparent place of one object relative to a second object near it, due to refraction; also, the correction required to be made to the observed relative places of the two bodies.
Double refraction (Opt.), the refraction of light in two directions, which produces two distinct images. The power of double refraction is possessed by all crystals except those of the isometric system. A uniaxial crystal is said to be optically positive (like quartz), or optically negative (like calcite), or to have positive, or negative, double refraction, according as the optic axis is the axis of least or greatest elasticity for light; a biaxial crystal is similarly designated when the same relation holds for the acute bisectrix.
Index of refraction. See under Index.
Refraction circle (Opt.), an instrument provided with a graduated circle for the measurement of refraction.
Refraction of latitude, Refraction of longitude, Refraction of declination, Refraction of right ascension, etc., the change in the apparent latitude, longitude, etc., of a heavenly body, due to the effect of atmospheric refraction.
Terrestrial refraction, the change in the apparent altitude of a distant point on or near the earth's surface, as the top of a mountain, arising from the passage of light from it to the eye through atmospheric strata of varying density.






Collaborative International Dictionary of English 0.48








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"Refraction" Quotes from Famous Books



... almost overgrown by the skin. But this eye is by no means as developed as the organ of vision, for instance, of the water salamander (the triton) or of the so-called axolotl, for it exists only in a kind of embryonic development, and contains neither a vitreous humor nor a lens for the refraction of the rays of light. As, however, the nerve of vision exists, it is possible that this salamander may be able to discern in some manner between ...
— Scientific American Supplement, No. 664, September 22,1888 • Various

... does not disappear entirely in the Earth's cone of shadow; the solar rays are refracted round our globe by our atmosphere, and curving inward, illumine the lunar globe with a rosy tint that reminds one of the sunset. Sometimes, indeed, this refraction does not occur, owing doubtless to lack of transparency in the atmosphere, and the Moon becomes invisible. This happened recently, on April ...
— Astronomy for Amateurs • Camille Flammarion

... is to be done?" True for her that there followed gentle feelings, and gentler yet in her attendance on her patron's obsequies, in the discovery that all of which he died possessed he'd left to her, but it is the duller surfaces that are slowest to give refraction, the least used springs that are least pliant. She was come a long road from her first signs of hardening. She was past, now, the stage where, when grieving for the little old man, she would have felt contrition that her first thought at his death had been, not ...
— This Freedom • A. S. M. Hutchinson

... corrected and changed some parts, the copies which I had made of it at that time may serve for proof that I have yet added nothing to it save some conjectures touching the formation of Iceland Crystal, and a novel observation on the refraction of Rock Crystal. I have desired to relate these particulars to make known how long I have meditated the things which now I publish, and not for the purpose of detracting from the merit of those who, without having seen anything that I have written, may be found to have treated of like matters: ...
— Treatise on Light • Christiaan Huygens

... Pennsylvania; Professor of Optics and Refraction; formerly Physician in Philadelphia Hospital; Member of Philadelphia County, Pennsylvania State and ...
— Watch and Clock Escapements • Anonymous

... reminded of the circumstances, and the disagreeable sensation produced by it returned. I determined to go home and place myself in the same position—as regards the mirror—and if the same effect was produced, I would make up my mind that it was the natural result of some principle of refraction or optics, which I did not understand, and dismiss it. I tried the experiment with the same result; and as I had said to myself, accounted for it on some principle unknown to me, and it then ceased to trouble me. ...
— The Lincoln Story Book • Henry L. Williams

... communicated to the Academy of Sciences, set him on fire with curiosity. Mitscherlich declared: "The paratartrate and the tartrate of soda and ammonia have the same chemical composition, the same crystalline form, the same angles, the same specific weight, the same double refraction, and the same inclination of the optic axes. Dissolved in water, their refraction is the same. But while the dissolved tartrate causes the plane of polarized light to rotate, the ...
— Great Men and Famous Women. Vol. 6 of 8 • Various

... child! Indeed, Ratty, my love, you must study. I will give you the renowned Kirwan's book. Charlotte tore some of it for curl papers; but there's enough left to enlighten you with the sun's rays, and reflection and refraction—" ...
— Handy Andy, Vol. 2 - A Tale of Irish Life • Samuel Lover

... at the complexity; but, on the other hand, do not hope to render it hastily. Look at it well, making out everything that you see, and distinguishing each component part of the effect. There will be, first, the stones seen through the water, distorted always by refraction, so that if the general structure of the stone shows straight parallel lines above the water, you may be sure they will be bent where they enter it; then the reflection of the part of the stone above the water crosses and interferes with the part that is ...
— The Crown of Wild Olive • John Ruskin

... host with him thought that the sun moved round the earth every day, and that on that particular occasion it stood still for a time, thus causing the light to remain longer; and I would say, that they did not conjecture that, from the amount of snow in the air (see Josh. x:11), the refraction may have been greater than usual, or that there may have been some other cause which we will ...
— A Theologico-Political Treatise [Part I] • Benedict de Spinoza

... science by mathematics; in an age when experimenting was sure to cost a man his reputation, and was likely to cost him his life, he insisted on experimenting, and braved all its risks. Few greater men have lived. As we follow Bacon's process of reasoning regarding the refraction of light, we see ...
— History of the Warfare of Science with Theology in Christendom • Andrew Dickson White

... produced a very singular effect of refraction. As they walked, when they thought they were about to put foot on a hillock, they stepped down lower, which often occasioned falls, happily so little serious that Penellan made them occasions for bantering. Still, he told them ...
— A Winter Amid the Ice - and Other Thrilling Stories • Jules Verne

... proceeded to accomplish our quest on foot. There were three baths in all, natural basins of rock fed by streams of mountain water, and shaded by the dense foliage of lofty trees. One of them is circular in form, and the water is curiously coloured, by some trick of reflection or refraction, to a dull steely blue. A plunge in the clear cool water was well worth the trifling fee we paid to the celestial, and we returned to our hotel with ...
— A Visit to Java - With an Account of the Founding of Singapore • W. Basil Worsfold

... be made to the article REFRACTION for the general discussion of the phenomenon known as the refraction of light. It is there shown that every substance, transparent to light, has a definite refractive index, which is the ratio of the velocity of light ...
— Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 - "Chtelet" to "Chicago" • Various

... foghorn much better: the presence of different layers of fog and air, and their varying densities, which cause both reflection and refraction of sound, prevent the air from being a reliable medium for carrying it. Now, submarine signalling has none of these defects, for the medium is water, subject to no such variable conditions as the air. Its density is practically ...
— The Loss of the SS. Titanic • Lawrence Beesley

... Chtellerault, but he gave up the idea, and settled in Paris (June 1625), in the quarter where he had sought seclusion before. By this time he had ceased to devote himself to pure mathematics, and in company with his friends Mersenne and Mydorge was deeply interested in the theory of the refraction of light, and in the practical work of grinding glasses of the best shape suitable for optical instruments. But all the while he was engaged with reflections on the nature of man, of the soul and of God, and for a while he remained invisible even to his most familiar friends. ...
— Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 2 - "Demijohn" to "Destructor" • Various

... the occasional fury of the Atlantic gales—arid, bare, and without the slightest appearance of vegetable life. The inland prospect is shrouded over by a dense mirage, through which here and there are to be discovered the stems of a few distant palm-trees, so broken and disjoined by refraction that they present to the imagination anything but the idea of foliage or shade. The water in the bay is calm and smooth as the polished mirror; not the smallest ripple is to be heard on the beach, to break through the silence of nature; not a breath of air sweeps over its glassy ...
— The Pirate and The Three Cutters • Frederick Marryat

... to remark that as another result of the thinness of the Martian atmosphere twilight is much shorter than on the earth, the light being less diffused when the sun is below the horizon, and refraction also considerably less than ...
— To Mars via The Moon - An Astronomical Story • Mark Wicks

... curious sensation of having stepped into an old Flemish painting. The hall in which he stood was cool and rather dark, though a bright refraction of light tossed from some upper window upon a tall mirror filled the shadow with broken spangles. Through an open doorway at the rear was the green glimmer of a garden. In front of him was a mahogany sideboard. On its polished top lay two books, a ...
— In the Sweet Dry and Dry • Christopher Morley

... commander has to deal with some refraction of this kind of problem. When it comes, moralizing and generalizing about the weakness of human nature does no good whatever. To call the man a fool is as invidious as to waste indignation upon the cause of his misfortune. Likewise, any frontal approach to the problem, such ...
— The Armed Forces Officer - Department of the Army Pamphlet 600-2 • U. S. Department of Defense

... elevation of forty-seven degrees, and then descends again straight to the horizon from which it rose; at the nightward edge, once in eighty-eight days, the sun peeps above the horizon and quickly sinks from sight again. The result is that, neglecting the effects of atmospheric refraction, which would tend to expand the borders of the domain of sunlight, about one quarter of the entire surface of Mercury is, with regard to day and night, in a condition resembling that of our polar regions, where there is but one day and one night in the course of a year—and on Mercury a year is ...
— Other Worlds - Their Nature, Possibilities and Habitability in the Light of the Latest Discoveries • Garrett P. Serviss

... several pictures. My young friend, E. W. Cooke, long a resident in Holland, and a keen and observing artist, remarked that the skies in the pictures of Backhuysen, though dark and inky, were precisely what we see now—the deep Zuyder Sea swallowing up any refraction of light which would otherwise have illuminated the clouds; while the skies of Cuyp, receiving the coruscations arising from the meeting of the two rivers, the Meuse and the Waal, the scenes of most of his pictures, exhibit that luminous reflection and unsteady appearance peculiar to his works. I ...
— Rembrandt and His Works • John Burnet

... by Number Seven and his whims. If you want to know how to account for yourself, study the characters of your relations. All of our brains squint more or less. There is not one in a hundred, certainly, that does not sometimes see things distorted by double refraction, out of plumb or out of focus, or with colors which do not belong to it, or in some way betraying that the two halves of the brain are not acting in harmony with each other. You wonder at the eccentricities ...
— Over the Teacups • Oliver Wendell Holmes, Sr.

... replenished with bituminous coal from a seam in the cliff above Cape Lisburne, that an effort was made to reach the island. During the run westward—a distance of 245 miles—the fine weather enabled us to witness some curious freaks of refraction and other odd phenomena for which the high latitudes are so remarkable. On July 30, the fine weather continuing, everybody was correspondingly elate and merry when both Herald and Wrangel islands were sighted from the "cro'-nest" and, as they were neared, apparently ...
— The First Landing on Wrangel Island - With Some Remarks on the Northern Inhabitants • Irving C. Rosse

... occurrences were as simple as the alphabet to Uncle Robin. He would explain it as a sight reflected on the cloud and thrown on a sea of mist or a desert as on a screen, using difficult words, like "refraction," and words from Euclid, like "angles." But Uncle Alan would object, Uncle Alan mistrusting difficult words and words from Euclid. Alan would raise his head from splicing a fishing-rod or cleaning the lock of a gun or ...
— The Wind Bloweth • Brian Oswald Donn-Byrne

... is next described; this is done well and evidently at first hand, though the functions of the parts are not given with complete accuracy. Many other points of physiological optics are touched on, in general erroneously. Bacon then discusses vision in a right line, the laws of reflection and refraction, and the construction of mirrors and lenses. In this part of the work, as in the preceding, his reasoning depends essentially upon his peculiar view of natural agents and their activities. His fundamental physical maxims are matter and force; the latter he calls ...
— Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 - "Austria, Lower" to "Bacon" • Various

... marble she stood on, her dark eyes seemed to gleam with a strange but enticing lustre. Even in the unsearching moonlight, which is after all rather deceptive than illuminative, I could not but notice one rare quality of her eyes. Each had some quality of refraction which made it look as though it contained a star. At every movement she made, the stars exhibited new beauties, of more rare and radiant force. She looked at me imploringly as the heavy curtain rolled back, and in eloquent ...
— The Lady of the Shroud • Bram Stoker

... ponds I have never seen satisfactorily explained. They have usually been attributed to a refraction, by which a section of the bordering sky is thrown below the horizon; but I am convinced that they are the effect of reflection. It seems that a gas (emanating probably from the heated earth and its vegetable matter) floats upon the elevated flats, and is of sufficient density, when viewed obliquely, ...
— Monsieur Violet • Frederick Marryat

... pure blue forty-five degrees under it, toward the west; and in the very west the dark veil of night still lingering on the horizon. I think I have remarked this progression between the tropics, where there is scarcely any horizontal refraction to make the light prematurely encroach on the darkness, ...
— Lectures on Language - As Particularly Connected with English Grammar. • William S. Balch

... they were "dancing in the air." The very same effect is perceived when we look at objects through spirits and water that are not perfectly mixed, or when we view distant objects over a red hot poker or over a flame. In all these cases the light suffers refraction in passing from a medium of one density into a medium of a different density, and the refracted rays are constantly changing their direction as the different currents rise in succession. Analogous effects are produced when sound passes through a mixed medium, whether it ...
— The Mirror of Literature, Amusement, and Instruction - Volume 20, No. 562, Saturday, August 18, 1832. • Various

... man-cheering, man-helping friend, though unseen, lives there yonder, just out of sight. Your star burns there just below our eastern horizon, and fills the lower and upper air with splendid and splendescent auroras. By some refraction which new lenses or else steamships shall operate, shall I not yet one day see again the disk of benign Phosphorus? It is a solid joy to me, that whilst you work for all, you work for me and with me, even if I have little to write, and seldom ...
— The Correspondence of Thomas Carlyle and Ralph Waldo Emerson, 1834-1872, Vol II. • Thomas Carlyle and Ralph Waldo Emerson

... as well as of refraction have been enlisted into the service of the astronomical observer. The formation of an image by means of a concave mirror is exhibited in fig. 3. As the observer's head would be placed between the object and the mirror, if the image, formed as ...
— 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

... the crystalline lens becomes opaque and loses its transparency, the power of refraction is lost—the animal ...
— Special Report on Diseases of Cattle • U.S. Department of Agriculture

... Mysteries. I am disposed to regard the prophetic and oracular Apollo (who, as the Hymn to Hermes tells us, alone knows the will of Father Zeus) as the Greek modification of this personage in savage theology. Where this Son is found in Australia, I by no means regard him as a savage refraction from Christian teaching about a mediator, for Christian teaching, in fact, has not been accepted, least of all by the highly conservative sorcerers, or shamans, or wirreenuns of the tribes. European observers, of course, have been struck by (and have probably exaggerated in some instances) the Christian ...
— The Homeric Hymns - A New Prose Translation; and Essays, Literary and Mythological • Andrew Lang

... star, for instance, formed by an ordinary lens, even if the spherical aberration has been corrected, appears blurred and discolored. There is no such difficulty with a mirror, because there is in that case no refraction of the light, and consequently no splitting up of the ...
— Pleasures of the telescope • Garrett Serviss

... to bed. She had no nerves: she saw life in its proper colours without refraction. The dreadful scene at Wancote had made its full impression on her, but she was not beset like Hyde by visions of what might have been. Still she was tired and subdued, and when Verney had dressed her arm she announced her intention of spending ...
— Nightfall • Anthony Pryde

... TOURBILLONS; et qu'ils sont les causes naturelles de tous les changements qui arrivent a la matiere; ce que je confirme par i'explication des effets les plus generaux de la Physique, tels que sont la durete des corps, leur fluidite, leur pesanteur, legerete, la lumiere et la refraction et reflexion de ses rayons."—Malebranche, ...
— Scientific American Supplement, No. 460, October 25, 1884 • Various

... through which posterity is obliged to look at his contemporaries,—a medium which so refracts and distorts their images, that it is almost out of the question to see them correctly. There is no rule, as in astronomy, by which this refraction may be ...
— Atlantic Monthly, Volume 2, Issue 11, September, 1858 • Various

... they were so near that the disk was plainly visible to the unaided eye, Hilda passed between them and Jupiter, eclipsing it. To their surprise, the light was not instantly shut off, as when the moon occults a star, but there was evident refraction. "By George!" said Bearwarden, "here is an asteroid that HAS an atmosphere." There was no mistaking it. They soon discovered a small ice-cap at one pole, and then made out oceans and continents, with mountains, forests, rivers, ...
— A Journey in Other Worlds • J. J. Astor

... less than disassociated states of mind and need not in reality be any more serious than errors of refraction of vision, faulty locomotion or lack of coordination. It comes because individuals know nothing of the psychology of themselves or their own minds and is the result of over-intensified mental and physical activity ...
— Freedom Talks No. II • Julia Seton, M.D.

... Miss Woolridge. It is the mirage, from the Latin miror, to wonder, which appears to be what you are doing just now. The steamer you see sailing along the shore is an optical illusion, a reflection, and not a reality. Refraction, which is the bending of the rays of light, produces this effect. If you look at a straight stick set up in the water, it will appear to be bent, and this is caused by refraction. The learned gentlemen present will excuse me for going back to ...
— Asiatic Breezes - Students on The Wing • Oliver Optic

... varieties of tabasheer, Brewster proceeded to determine its refractive index, arriving at the remarkable result that tabasheer "has a lower index of refraction than any other known solid or liquid, and that it actually holds an intermediate place between water and gaseous bodies!" This excessively low refractive power Brewster believes to afford a complete explanation of the extraordinary behavior exhibited by tabasheer when ...
— Scientific American Supplement, No. 595, May 28, 1887 • Various

... never become accessible to our psychic perception, corresponding to the lenses of the telescope which design the image. If we continue this comparison, we may say that the censor between two systems corresponds to the refraction of rays during their ...
— Dream Psychology - Psychoanalysis for Beginners • Sigmund Freud

... all the colors. And the white light may be broken up (separated by refraction or the turning aside of light rays from their true course) into the colors of the rainbow, which is itself only this same decomposition of light by atmospheric refraction. Black is the absence of light, and consequently of color. This is not the case with pigment, for pure pigment ...
— The Painter in Oil - A complete treatise on the principles and technique - necessary to the painting of pictures in oil colors • Daniel Burleigh Parkhurst

... Every phenomenon that occurs is seen to be an instance of a general law that holds among all phenomena that resemble it in certain definable respects. Thus the apparent bending of the stick in water is seen to be a special case of the laws of the refraction of light; the apparent anomaly or contradiction of our sense experiences is, as we say, explained. What seemed to be a contradiction and an exception is seen to be a clear case of ...
— Human Traits and their Social Significance • Irwin Edman

... what you thought of him, dearest friend, and then he said, all in a glow and animation, that you were not only his own delight but the delight of his children, which is affection by refraction, isn't it? Quite gratified he seemed by the hold of your good opinion. Not only is he the notability par excellence of these Baths of Lucca, where he has lived a whole year, during the snows upon the mountains, but he presides ...
— The Letters of Elizabeth Barrett Browning (1 of 2) • Frederic G. Kenyon

... rays, before any part of the dark hemisphere was visible. Soon afterward, the whole dark limb became illuminated. This prolongation of the cusps beyond the semicircle, I thought, must have arisen from the refraction of the sun's rays by the moon's atmosphere. I computed, also, the height of the atmosphere (which could refract light enough into its dark hemisphere to produce a twilight more luminous than the light reflected from the earth when the moon is about 32 degrees ...
— The Works of Edgar Allan Poe - Volume 1 (of 5) of the Raven Edition • Edgar Allan Poe

... since the 31st of January the sun had reappeared in refraction, and was every day rising higher and higher above the horizon. But it was hid by the snow, which, if it did not produce utter ...
— The Voyages and Adventures of Captain Hatteras • Jules Verne

... Thuringia; it was not until about 1843 that the name was used in its present sense. The mineral had, however, long been known under the names calcareous spar and calc-spar, and the beautifully transparent variety called Iceland-spar had been much studied. The strong double refraction and perfect cleavages of Iceland-spar were described in detail by Erasmus Bartholinus in 1669 in his book Experimenta Crystalli Islandici disdiaclastici; the study of the same mineral led Christiaan Huygens to discover in 1690 the laws of double refraction, ...
— Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 - "Bulgaria" to "Calgary" • Various

... have been at rest. His voluminous correspondence constantly reveals one invention after another upon which he was engaged. A new micrometer, a dividing screw, a new surveying-quadrant, problems for clearing the observed distance of the moon from a star of the effects of refraction and parallax, a drawing-machine, a copying-machine for sculpture—anything and everything he used or saw seems immediately to have been subjected to the question: "Cannot this be improved?" usually with a response ...
— James Watt • Andrew Carnegie

... though the effect of which they spoke is perfectly certain to take place, if the debt continues to increase. Their reasoning may be compared to that of an astronomer, who observed the position of a planet, but, in his calculations, made no allowance for the refraction of the atmosphere, who would therefore err as to the place of the star, but ...
— An Inquiry into the Permanent Causes of the Decline and Fall of Powerful and Wealthy Nations. • William Playfair

... to say that the highest divine being of American or African native peoples has been borrowed from Europeans, and is, especially, a savage refraction from the God of missionaries. If this can be proved, the shadowy, practically powerless "Master of Life" of certain barbaric peoples, will have degenerated from the Christian conception, because of that conception he will be only a faint unsuccessful refraction. ...
— Myth, Ritual, and Religion, Vol. 1 • Andrew Lang

... before he comes to September 22—'the Bishop of Aquila reported that there were anxious meetings of the Council, the courtiers paid a partial homage to Dudley.'* This appears to be a refraction from the abstract of the letter of October 13 or 14: 'he relates the manner in which the wife of Lord Robert came to her death, the respect (reverencia) paid to him immediately by members of ...
— The Valet's Tragedy and Other Stories • Andrew Lang

... need and are going to get is a material of about two and a half million specific gravity. Got to have it for lenses and controls for the fifth-order forces. Those rays go right through anything less dense without measurable refraction. But I see Rovol's giving me a nasty look. He's my boss on this job, and I imagine this kind of talk's barred during the period of relaxation, as being work. ...
— Skylark Three • Edward Elmer Smith

... lost in this very storm. Next day came another of the sea wonders. The cry of land started them all from the dinner table; but the land happened to be an immense field of ice, which, with the inequalities of its surface and the effect of refraction, presented some appearance of a wooded country. On that night the cry of "Light a-head," while they were still several hundred miles from land, excited new astonishment. "All the knowing ones" clearly distinguished a magnificent revolver. The ...
— Blackwood's Edinburgh Magazine, Volume 61, No. 380, June, 1847 • Various

... other hand, I used to find Paul Tichlorne plunged as deeply into the study of light polarization, diffraction, and interference, single and double refraction, and all manner ...
— Moon-Face and Other Stories • Jack London

... passes obliquely through the air to the surface of the water, but, on entering the water, it is bent or refracted and takes the new path OS. The angle AOR is called the angle of incidence. The angle POS is called the angle of refraction. ...
— General Science • Bertha M. Clark

... to determine the exact positions of celestial objects correction has to be made for the effects of refraction, according to the apparent elevation of these objects in the sky. Such effects are least when the objects in question are directly overhead, for then the rays of light, coming from them to the eye, enter the atmosphere perpendicularly, and not at ...
— Astronomy of To-day - A Popular Introduction in Non-Technical Language • Cecil G. Dolmage

... proximity of the atoms of the body (or its density), but also by the motions of those atoms; so that if two simple gases of different specific gravity be made equal in density by compression, their refraction will be approximately as their specific heats. In the case of solids and liquids, or even compound gases, there is a continual absorption of motion to produce the cohesion of composition and aggregation. ...
— Outlines of a Mechanical Theory of Storms - Containing the True Law of Lunar Influence • T. Bassnett

... of importance, because thereby the theory is excluded, or at least made extremely improbable, that the phenomenon of refraction is to be ascribed to, a ring of vapor surrounding the sun for a great distance. Indeed, such a refraction should cause a deviation in the observed direction, and, in order to produce the displacement of one of the stars under observation itself a slight proximity of the vapor ring ...
— The Einstein Theory of Relativity • H.A. Lorentz

... understood by seamen to denote mid-day, when the passage and meridian altitude of the sun affords the latitude.—True altitude is that produced by correcting the apparent one for parallax and refraction. ...
— The Sailor's Word-Book • William Henry Smyth

... not with the inconsistency of the objectors to John and Jesus, but simply with this caricature which He quotes from them of some of His characteristics. It is a distorted refraction of the beam of light that comes from His face, through the muddy, thick medium of their prejudice. And if we can, I was going to say, pull it straight again, we shall see something of His glories. I take the two clauses of ...
— Expositions Of Holy Scripture - Volume I: St. Luke, Chaps. I to XII • Alexander Maclaren

... to his dissertation on sight, spectacles, focusses, lens, reflection, refraction, &c.; but, as he was not defective in the particular organs alluded to, felt but little interested on the subject; selected what he really wanted, or rather what etiquette required, when, to their great gratification, in came Sparkle. After the first salutations ...
— Real Life In London, Volumes I. and II. • Pierce Egan

... covered with long rushes, the tops of which alone are visible at high water. On one occasion, when in a boat, we were so entangled by these shallows that we could hardly find our way. Nothing was visible but the flat beds of mud; the day was not very clear, and there was much refraction, or as the sailors expressed it, "things loomed high." The only object within our view which was not level was the horizon; rushes looked like bushes unsupported in the air, and water like mud-banks, and mud-banks ...
— The Voyage of the Beagle • Charles Darwin

... replacing, as it does, merely contiguous associations by the logical ones of identity, similarity, or analogy. If you know a 'law,' you may discharge your memory of masses of particular instances, for the law will reproduce them for you whenever you require them. The law of refraction, for example: If you know that, you can with a pencil and a bit of paper immediately discern how a convex lens, a concave lens, or a prism, must severally alter the appearance of an object. But, if you don't know the general law, you must charge your memory ...
— Talks To Teachers On Psychology; And To Students On Some Of Life's Ideals • William James

... wire hand-rail Ross continued his survey of the horizon, all of which was visible except a small portion obscured by the rise of the conning-tower. The air was remarkably clear. Taking into consideration the refraction of the atmosphere, the navigation lamps of a vessel shown at twenty feet above the sea would be visible from the low-lying deck of the submarine at a distance of six ...
— The Submarine Hunters - A Story of the Naval Patrol Work in the Great War • Percy F. Westerman

... upon that step, facing the half-moon that looked down from above the grove. Her glance was not directed toward him, but up and away. In the pupils of her eyes was a shine which seemed a refraction of the silver-gray beams of the moon. There was about her gaze a something heavy, mournful, and boding which old Dave could not understand, but which made him think of the expression she had lifted in the old homesteading days toward the hail-cloud that swept from eastward to ...
— The Best Short Stories of 1919 - and the Yearbook of the American Short Story • Various

... of the refraction shall be regulated in all equity and justice, by the magistrates of cities respectively, where it shall be judged that there is any room to ...
— The Medallic History of the United States of America 1776-1876 • J. F. Loubat

... EXPLANATION OF REFRACTION. Perhaps the surest single method of distinguishing precious stones is to find out the refractive index of the material. To one not acquainted with the science of physics this calls for some explanation. The ...
— A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public • Frank Bertram Wade

... the cause of the rainbow? It is evident that what apparent things we see come to our eyes in right or in crooked lines, or by refraction: these are incorporeal and to sense obscure, but to reason they are obvious. Those which are seen in right lines are those which we see through the air or horn or transparent stones, for all the parts of these things are very fine and tenuous; ...
— Essays and Miscellanies - The Complete Works Volume 3 • Plutarch

... a slowly revolving light, might be produced. The apparatus was arranged so as to cause a series of eight lenses one foot in diameter and three feet focal distance to revolve with any velocity up to sixty revolutions per minute round a central lamp. The light from this lamp being concentrated by refraction through the eight lenses into eight pencils, having a divergence of about eight degrees each, illuminated when at rest not quite fifty degrees of the horizon; but when this system of lenses was put into rapid motion, every degree of the three hundred and sixty degrees of the horizon ...
— Smeaton and Lighthouses - A Popular Biography, with an Historical Introduction and Sequel • John Smeaton

... 100 days of varying twilight, and 77 of perfect inky darkness (save when the moon has a northern declination) in the period of a typical year. During the period of a little over four days, the sun shines continuously on both the North and South Poles at the same time, owing to refraction parallax, semi-diameter, and dip ...
— Scientific American, Volume XLIII., No. 25, December 18, 1880 • Various

... they thought that they saw lakes of water in the distance, and hastened on to them; and then they fancied they were close to rivers and islands, covered with luxuriant foliage, but still were doomed to disappointment; as all was the result of the highly-rarefied air, and the refraction of the sun's rays on the sultry plain. What would they have given for a bush even to afford them any shelter from the noonday sun, for the crowns of their heads appeared as if covered with live coal, and their minds began to wander. The poor horses moved at the slowest pace, and ...
— The Mission • Frederick Marryat

... around him, not as the bather sees it, blurred and indistinct, but in the calm splendor of its own thallassphere. The first thought is one of unspeakable admiration of the miraculous beauty of everything around him—a glory and a splendor of refraction, interference and reflection that puts to shame the Arabian story of the kingdom of the Blue Fish. Above him is that pure golden canopy with its rare glimmering lustrousness—something like the soft, dewy ...
— Lippincott's Magazine Of Popular Literature And Science, No. 23, February, 1873, Vol. XI. • Various

... the children out into the streets. This was found to be markedly the case, the children of alcoholic parents spending much more of their spare time in the streets. An examination, however, of the vision and refraction of children with regard to the time they spent in-and out-of-doors, showed no clear and definite result, the children who spent the whole or most of their spare time in the streets having the most myopia and also most normal sight. It was not possible to assert that the outdoor life ...
— Applied Eugenics • Paul Popenoe and Roswell Hill Johnson

... man will often mistake a tuft of grass, or a tree, or other most dissimilar object, for his companion, or his horse, or game. An old traveller is rarely deceived by mirage. If he doubts, he can in many cases adopt the following hint given by Dr. Kane: "Refraction will baffle a novice, on the ice; but we have learned to baffle refraction. By sighting the suspected object with your rifle at rest, you ...
— The Art of Travel - Shifts and Contrivances Available in Wild Countries • Francis Galton

... joins the other side of the triangle. Then again, it is virtually impossible to tell the precise moment when the moon is at half, as the line it gives is not so sharp that we can fix it with absolute accuracy. There is, moreover, another element of error due to the refraction of light by the earth's atmosphere. The experiment was probably made when the sun was near the horizon, at which time, as we now know, but as Aristarchus probably did not suspect, the apparent displacement of the sun's position is considerable; and this ...
— A History of Science, Volume 1(of 5) • Henry Smith Williams

... the very thing I want to tell you about. The sun, shining upon vapor and falling water, makes all these beautiful colors. That is the way I mix the rainbow. The science which teaches about the rays of light, their reflection and refraction, and the coloring they give to different objects, is called Optics: it is an interesting study, and I wish you to be a proficient in it." "Optics, is it? That seems to me very different from blowing soap-bubbles. I do hate to be cheated ...
— Holidays at the Grange or A Week's Delight - Games and Stories for Parlor and Fireside • Emily Mayer Higgins

... was due to the slanting sunlight, or the refraction from the wonderfully illumined water, I cannot say, but, whatever the cause, I found it difficult to focus my sight properly upon the flying apparition. It seemed, however, to be a man standing upright in ...
— The Willows • Algernon Blackwood

... table on which the bride's jewels were displayed, and Lily's heart gave an envious throb as she caught the refraction of light from their surfaces—the milky gleam of perfectly matched pearls, the flash of rubies relieved against contrasting velvet, the intense blue rays of sapphires kindled into light by surrounding diamonds: all these precious tints enhanced and deepened by the varied art of their setting. ...
— House of Mirth • Edith Wharton

... unusually light appearance in the air at Brighton, it is a distant refraction (I have no doubt) of the gorgeous and shining surface of Tavistock House, now transcendently painted. The theatre partition is put up, and is a work of such terrific solidity, that I suppose it will be dug up, ...
— The Letters of Charles Dickens - Vol. 1 (of 3), 1833-1856 • Charles Dickens

... the weather charts were studied. The atmospheric conditions were such that it was very possible that due to refraction Venus would have been visible just on the horizon. The fact that the UFO faded so fast would bear this out because the conditions for such refraction are critical and a slight change in atmospheric conditions could easily have caused the planet ...
— The Report on Unidentified Flying Objects • Edward Ruppelt

... or only an arrangement whereby light was for the first time introduced to the earth's surface. The idea of creating light not only involves the Divine Conception of the thing, and the marvellous method of its production,[1] but doubtless, also, all those wonderful laws of reflection, refraction, polarization, and a thousand others, which the science of Physical ...
— Creation and Its Records • B.H. Baden-Powell

... in the centre, by the refraction of whose ripples the gold and red fish seemed multiplied ...
— The Rifle Rangers • Captain Mayne Reid

... facts it is evident that matter set in motion by the sun has the power of producing heat without light, and that its rays are less refrangible than the visible rays. The invisible rays that produce heat are capable of reflection as well as refraction in the same manner ...
— The World's Greatest Books - Volume 15 - Science • Various

... for the first time one of those sunsets which awaken in us Italians a feeling of wonder no less than that awakened in people from the North by the sunsets at Naples and Rome. The sun, because of the refraction of light by the mists which always fill the air in Holland, is greatly magnified, and diffuses through the clouds and on the sea a veiled and tremulous splendor like the reflection of a great fire. It seemed as if another sun had unexpectedly ...
— Holland, v. 1 (of 2) • Edmondo de Amicis

... curious about these pools. Our guide saw us measuring the depth of one of them, which was full of greenish-blue water, colored only by the refraction of the light. He took our long alpenstock, and poising it, sent it down into the water, as a man might throw a javelin. It disappeared, but in a few seconds leaped up at us out of the water, as if thrown back again by an ...
— Sunny Memories of Foreign Lands V2 • Harriet Beecher Stowe

... detail a few of the savage stories of the Origin of Death. That told by the Australians may be regarded with suspicion, as a refraction from a careless hearing of the narrative in Genesis. The legend printed by Mr. Brough Smyth {183a} was told to Mr. Bulwer by 'a black fellow far from sharp,' and this black fellow may conceivably have distorted what his tribe had heard from a missionary. This sort of refraction ...
— Modern Mythology • Andrew Lang

... precision and force as to impale it. He will harpoon a turtle as it rushes away from the boat, 5 feet beneath the surface, with the coolness of a billiard-player, and with unerring accuracy "taking off" for the speed of the boat and the refraction of the water. All the ways and habits of fish, and their favourite feeding-grounds, are to him as pages ...
— The Confessions of a Beachcomber • E J Banfield

... being struck with the boldness of the experiment which launched such massive and complicated fabrics on the ocean. The pure water is a medium almost as transparent as the atmosphere, and the very keel is seen, usually so near the surface, in consequence of refraction, as to give us but a very indifferent opinion of the security of the whole machine. I do not remember ever looking at my own vessel, when at sea, from a boat, without wondering at my own folly ...
— Recollections of Europe • J. Fenimore Cooper

... which is opaque, and white to the naked eye, is pellucid in a microscope; and a hair seen in this way, loses its former colour, and is, in a great measure, pellucid, with a mixture of some bright sparkling colours, such as appear from the refraction of diamonds, and other pellucid bodies. Blood, to the naked eye, appears all red; but by a good microscope, wherein its lesser parts appear, shows only some few globules of red, swimming in a pellucid liquor, and how these ...
— An Essay Concerning Humane Understanding, Volume I. - MDCXC, Based on the 2nd Edition, Books I. and II. (of 4) • John Locke

... lower one, down through the immense cylinder. Around each oval is built a series of fin protectors, which is the only part about the telescope I could not fully understand. They seemed to counteract the refraction of the water, and yet the water must be in the pipe ...
— Life in a Thousand Worlds • William Shuler Harris

... mounted towards them and, as if a humid fog had been projected into the air, the atmosphere sensibly freshened. Below were the liquid masses. They seemed like an enormous flowing sheet of crystal amid a thousand rainbows due to refraction as it decomposed the solar rays. The ...
— Rubur the Conqueror • Jules Verne

... God's agency is declared and His ownership asserted. 'I do set My bow.' Neither Noah nor the writer knew anything about refraction or the prismatic spectrum. But perhaps they knew more about the rainbow than people do who know all about how it comes, except that God sets it in the cloud, and that it is His. Let us have the facts which science labels as such, by all means, and the more ...
— Expositions of Holy Scripture - Genesis, Exodus, Leviticus and Numbers • Alexander Maclaren

... planes of freezing, when radiant heat is sent through ice, we may safely infer symmetry of aggregation, and hence conclude that the line perpendicular to the planes of freezing is a line of no double refraction; that it is, in fact, the optic axis of the crystal. The same remark applies to the line joining the opposite blunt angles of a crystal of Iceland spar. The arrangement of the molecules round this line being ...
— Faraday As A Discoverer • John Tyndall

... badly, or the refraction of the water was not allowed for, I cannot say, but there was no result. I only saw a quivering of the surface and the fish was ...
— Mass' George - A Boy's Adventures in the Old Savannah • George Manville Fenn

... the smaller Parts of some Colour'd Bodies are Transparent, yet of others they are not, so that the first Doubt's, whether the Superficial parts create those Colours, and the second, whether there be any Refraction at all in the later (71, 72, 73.) A famous Controversie among Philosophers, about the Nature of ...
— Experiments and Considerations Touching Colours (1664) • Robert Boyle

... is simple enough. Of the mirage the dictionary says it is "an optical illusion arising from an unequal refraction in the lower strata of the atmosphere, causing images of remote objects to be seen double, distorted or inverted as if reflected in a mirror, or to appear as if suspended in ...
— The Boy Ranchers - or Solving the Mystery at Diamond X • Willard F. Baker

... culminations of Polaris by the same observers, the latitude of Formentera was found to be 38deg. 39min 57.07sec., a result differing by 2.14sec. from the mean of the 1318 inferior culminations given above. [This difference cannot be accounted for by any difference in the tables of refraction, as neither the employment of those of Bradley, of Piazzi, of the French, of Groombridge, of Young, of Ivory, of Bessel, or of Carlini, would make a difference of two-tenths ...
— Decline of Science in England • Charles Babbage

... fires at night. The grass is burnt in spring and autumn so as to kill off the old tufts and allow of the new shoots growing for hay. The fires look like one long streak of quivering flame, the forked tips of which flash and quiver in the horizon, magnified by refraction, and on a dark night are lovely. In the day-time one only sees volumes of smoke which break the monotony of the landscape, though I don't know that it is picturesque. With a slight breeze the fires spread in a marvellous way, even at the rate of eight or nine miles ...
— A Lady's Life on a Farm in Manitoba • Mrs. Cecil Hall

... it is not diaphanous convinces me that it is a dense vapor formed by the calorification of ascending moisture dephlogisticated by refraction. A few endiometrical experiments would confirm this, but it is not necessary. The thing ...
— Innocents abroad • Mark Twain

... conditions are entirely different. As we ascend the air becomes rarer. It has less moisture, because a wet atmosphere, being heavier, lies nearer the surface of the earth. Being rarer the action of sunlight on the particles is less intense. Reflection and refraction of the rays acting on the light atmosphere do not produce such a powerful effect as on ...
— Aeroplanes • J. S. Zerbe***

... way. The arrow is a reed, with a steel barbed point, which is fixed in a hole at the end, and secured by fine twine made from the fibres of pineapple leaves. It is only in the clearest water that fish can be thus shot—and the only skill required is to make, in taking aim, the proper allowance for refraction. ...
— The Naturalist on the River Amazons • Henry Walter Bates

... these conclusions is (Maxwell) that the specific inductive capacity of a non-conductor or dielectric should be equal to the square of its index of refraction for waves of infinite length. This is true for some substances—sulphur, turpentine, petroleum and benzole. In others the specific inductive capacity is too high, e. g., vegetable and animal oils, glass, Iceland spar, fluor spar, ...
— The Standard Electrical Dictionary - A Popular Dictionary of Words and Terms Used in the Practice - of Electrical Engineering • T. O'Conor Slone

... Galileo. It was thus with the application of the isochronism of the pendulum to the making of instruments for measuring intervals, astronomical and other. It was thus when the discovery that the refraction and dispersion of light did not follow the same law of variation, affected both astronomy and physiology by giving us achromatic telescopes and microscopes. It was thus when Bradley's discovery of the ...
— Essays on Education and Kindred Subjects - Everyman's Library • Herbert Spencer

... not a sign of the dinghy. The schooner lay still in a pool of colourful water, the coral and weeds on the bottom in plain view, some of the swaying plants magnified by refraction. There was no air stirring, and from the far end of the island a morning haze was rising like smoke from flats which appeared to be ...
— Isle o' Dreams • Frederick F. Moore

... Nemalite (which he himself discovered) in the very same way as a beam of light is polarised by the crystal Tourmaline. He then showed that a large number of substances, which are opaque to Light (e.g. pitch, coal-tar etc.) are transparent to Electric Waves. He next determined the Index of Refraction of various substances for invisible Electric Radiation and thereby eliminated a great difficulty which had presented itself in Maxwell's theory as to the relation between the index of refraction of light and the di-electric constant of insulators. He then determined ...
— Sir Jagadis Chunder Bose - His Life and Speeches • Sir Jagadis Chunder Bose

... a stone may arise from its color or lack of color, from its translucency or opaqueness, from its high refraction of light, and from the manner of cutting and polishing to bring out these qualities. Hardness and durability are desirable qualities. The diamond is the hardest known mineral and the sapphire, ruby, and emerald rank high in this regard. On the ...
— The Economic Aspect of Geology • C. K. Leith

... all right. In fact I've been able to improve it greatly. You remember the trouble I had with the refraction from the second prism. The adjustment of the angles—— The way the ...
— Gossamer - 1915 • George A. Birmingham

... "Refraction of light," said Thorn hurriedly. "The light rays strike this film, hurtle around the object, it coats—at increased speed, probably, but there are no instruments accurate enough to check that—and emerge on the other side. Thus, you can ...
— The Radiant Shell • Paul Ernst

... turned up to it in that rather half-witted fashion which might have excused the error of his keepers; and as he gazed he became aware of something little and lustrous flying close to the lustrous orb, like a bright chip knocked off the moon. At first he thought it was a mere sparkle or refraction in his own eyesight; he blinked and cleared his eyes. Then he thought it was a falling star; only it did not fall. It jerked awkwardly up and down in a way unknown among meteors and strangely reminiscent of the works of man. The next moment the thing drove right ...
— The Ball and The Cross • G.K. Chesterton

... talking rapidly of data which he had derived from the study of the photograph as from plumb line, level, compass, and tape, astronomical triangle, vertices, zenith, pole, and sun, declination, azimuth, solar time, parallactic angles, refraction, and a ...
— The Ear in the Wall • Arthur B. Reeve

... a contemporary of Washington and of the Revolutionary fathers. The immensity of the history which has been crowded into those forty-five years has distorted our mental vision, as ordinary objects are sometimes distorted by refraction. Yet when we reflect, the distortion disappears. But the wonder still remains. The years during which the deeds of Lincoln have been a memory to us do not carry us back to the early days of our own country. They do not carry us back even ...
— Fifty Years of Public Service • Shelby M. Cullom

... arc of a circle, consisting of the prismatic colors, formed by the refraction and the reflection of rays of light from drops of rain or vapor, appearing in the part of the ...
— A Color Notation - A measured color system, based on the three qualities Hue, - Value and Chroma • Albert H. Munsell

... penetrate beyond the apparent limits of the sea, when the atmosphere exhibits this peculiarity, though the practised eye of a mariner often detects vessels, which are hid from others, merely because they are not sought in the proper place. The deception may also be aided by a slight degree of refraction. ...
— The Water-Witch or, The Skimmer of the Seas • James Fenimore Cooper

... cut or polished stone, one or more of the following effects are observed:—it may be transmitted through the stone, diaphaneity, as it is called; it may produce single or double refraction, or polarisation; if reflected, it may produce lustre or colour; or it may produce phosphorescence; so that light may be (1) transmitted; (2) reflected; ...
— The Chemistry, Properties and Tests of Precious Stones • John Mastin

... Deviation. — N. deviation; swerving &c. v.; obliquation|, warp, refraction; flection[obs3], flexion; sweep; deflection, deflexure[obs3]; declination. diversion, digression, depart from, aberration; divergence &c. 291; zigzag; detour &c. (circuit) 629; divagation. [Desultory motion] wandering &c. v.; vagrancy, evagation[obs3]; ...
— Roget's Thesaurus

... lower than the opening. A mixture of gases is exhaled, which, being heavier than the atmosphere, fills it up to the level of the entrance; and when the sun is shining into the cave, one can see the gaseous fumes swaying to and fro, owing to the difference of refraction. ...
— Round About the Carpathians • Andrew F. Crosse

... Sound. Acoustics. Sound Mediums. Vibration. Velocity of Sound. Sound Reflections. Resonance. Echos. Speaking Trumpet. The Stethoscope. The Vitascope. The Phonautograph. The Phonograph. Light. The Corpuscular Theory. Undulatory Theory. Luminous Bodies. Velocity of Light. Reflection. Refraction. Colors. The Spectroscope. The Rainbow. ...
— Practical Mechanics for Boys • J. S. Zerbe

... object at which Elizabeth gazed when they renewed their journey, after their encountre with Richard, was the sun, as it expanded in the refraction of the horizon, and over whose disk the dark umbrage of a pine was stealing, while it slowly sank behind the western hills. But his setting rays darted along the openings of the mountain he was on, ...
— The Pioneers • James Fenimore Cooper

... difficulty has arisen with reference to quotations and cited authorities, all of which have gone through a double process of refraction: first into Russian, then into English. The translator, also a Russian, and far from perfectly acquainted with English, cannot claim to possess the erudition necessary to verify and restore the many quotations to verbal accuracy; all that is hoped is that, by a careful rendering, ...
— From the Caves and Jungles of Hindostan • Helena Pretrovna Blavatsky

... 5. Velocity of Light measured by Fizeau's Toothed Wheel 6. White Light resolved into Colors 7. Showing amount of Light received by Different Planets 8. Measuring Intensities of Lights 9. Reflection and Diffusion of Light 10. Manifold Reflections 11. Refraction by Water 12. Atmospherical Reflection 13. Refracting Telescope 14. Reflecting Telescope 15. The Cambridge Equatorial Refractor 16. The new Reflecting Telescope at Paris 17. Spectroscope, with Battery of Prisms 18. Spectra of Glowing Hydrogen and of the Sun 19. Illustrating ...
— Recreations in Astronomy - With Directions for Practical Experiments and Telescopic Work • Henry Warren

... now dusk, but the two regiments engaged in the flanking movement pushed on to gain the bluff. Just as they reached the crest of the ridge the moon rose from behind, enlarged by the refraction of the atmosphere, and as the attacking column passed along the summit it crossed the moon's disk and disclosed to us below a most interesting panorama, every figure nearly being thrown out in full relief. The enemy, now outflanked ...
— Memoirs of Three Civil War Generals, Complete • U. S. Grant, W. T. Sherman, P. H. Sheridan

... not our design to enter into an elaborate description of this piece of mechanism, as every student of philosophy, who is well acquainted with the reflection and refraction of rays of light, will understand how an ingenious contrivance produced the results spoken of. The same principle enters into the arrangement of the camera obscura. There was an aperture very artfully cut through the wall, and so guarded on the outside as to escape ...
— Eveline Mandeville - The Horse Thief Rival • Alvin Addison

... the direction of its length. The surfaces of this section, after having been carefully polished, are cemented together again by means of Canada balsam. A ray of light, on entering the prism, is separated by the double refraction of the calc-spar into an ordinary and an extraordinary ray; the former undergoes total reflection at the layer of balsam at an incidence which allows the extraordinary ray to be transmitted; the latter, therefore, passes through unchanged. This principle of obtaining ...
— Scientific American Supplement, No. 441, June 14, 1884. • Various

... phenomena very analogous to those which fixed my attention during a long abode at Mexico and Quito. These meteors are perhaps modified by the nature of the soil and the air, like certain effects of the looming or mirage, and of the terrestrial refraction peculiar to the ...
— Equinoctial Regions of America • Alexander von Humboldt

... The "Ideas" of Plato are, in truth, neither more nor less than those universal definitions, those universal conceptions, as they look, as they could not but look, amid the peculiar lights and shadows, in the singularly constituted atmosphere, under the strange laws of refraction, and in the proper perspective, of Plato's house of thought. By its peculiarities, subsequent thought—philosophic, [164] poetic, theological—has been greatly influenced; by the intense subjectivities, the accidents, so to speak, of Plato's genius, of Plato himself; the ...
— Plato and Platonism • Walter Horatio Pater

... quick little steps up and down the dingy room. "Look here, laddie! There's a great continent from the equator to the icebergs, and not a man in it who could correct an astigmatism. What do they know of modern eye-surgery and refraction? Why, dammy, they don't know much about it in the provinces of England yet, let alone Brazil. Man, if you could only see it, there's a fringe of squinting millionaires sitting ten deep round the whole ...
— The Stark Munro Letters • J. Stark Munro

... the sea-water, and its design is to represent the fishes and marine animals as nearly as possible in their native haunts and habits, to do which, and not startle the fish, the visitors go through darkened passages, and are thus concealed from them, all the light coming in by refraction through the water. Their actions are thus natural, and they move about with perfect freedom, some of the tanks being of enormous size. Here swim schools of herring, mackerel, and porpoises as they do out at sea, the octopus gyrates his arms, and almost every fish that is known to the ...
— England, Picturesque and Descriptive - A Reminiscence of Foreign Travel • Joel Cook

... Draconis, a star of the second magnitude which passes practically overhead in the latitude of London, and whose observations are therefore singularly free from the complex corrections due to astronomical refraction, and concluded that this star was 23" more northerly in ...
— Project Gutenberg Encyclopedia

... is reputed to be a fact by several people of apparent truthfulness that it is possible, in circumstances such as these, for each watcher to see the other man's eyes reflected from the mirrors of the periscopes; and it is an undoubted fact that the laws which govern the refraction of light would allow of this phenomenon. Personally, I am glad to say I have never seen a German's eye through a periscope; but then personally I am inclined to doubt if any one has. It must be quite dreadful to see a thing like a poached egg ...
— No Man's Land • H. C. McNeile

... the characteristic state of mind which might be called the refraction of an idea by the presence of another idea. An example is the habit of saying, "Unprepared, as I have—'' before beginning a speech. The speaker means to say that he has not prepared himself, but, as he really has prepared himself, both expressions come out together. This habitual ...
— Robin Hood • J. Walker McSpadden

... depth when viewed from a point directly over them. An illustration familiar to every boy is to be found in the fact that he can see fish at the bottom of a clear stream from a bridge, while from the shore the refraction of the water is such that he can see nothing. From the air the aviator can readily see a submarine at a depth of fifty feet unless the water is unusually rough or turbid. The higher he rises the wider is his sphere of vision. With the ...
— Aircraft and Submarines - The Story of the Invention, Development, and Present-Day - Uses of War's Newest Weapons • Willis J. Abbot

... unascertained primary cause, then, Professor Williams, of Harvard College, who subsequently made a thorough investigation of the matter, gave it as his opinion that this unprecedented quantity of vapor had gathered in the air in layers so as to cut off the rays of light, by repeated refraction, in a remarkable degree. He thought that the specific gravity of this vapor must have been the same as that of the air, which caused it to be held so long in suspension in the atmosphere. In this case the extent ...
— Burroughs' Encyclopaedia of Astounding Facts and Useful Information, 1889 • Barkham Burroughs

... Adagio, developed, as Beethoven has developed it in the third movement of his Ninth Symphony, may be taken as the basis of all regulations as to musical time. In a certain delicate sense the Allegro may be regarded as the final result of a refraction (Brechung) of the pure Adagio-character by the more restless moving figuration. On careful examination of the principal motives of the Allegro it will be found that the melody (Gesang) derived from the Adagio, predominates. The most important Allegro movements of Beethoven are ...
— On Conducting (Ueber das Dirigiren): - A Treatise on Style in the Execution of Classical Music • Richard Wagner (translated by Edward Dannreuther)

... stirred a finger, and seemed as incapable of being successfully wound up, as the pecuniary affairs of their former owners, there was always great choice in Mr Brogley's shop; and various looking-glasses, accidentally placed at compound interest of reflection and refraction, presented to the eye an eternal perspective of ...
— Dombey and Son • Charles Dickens

... of nature, the tendency of the channel of the Mississippi is always toward one or the other of its banks, being influenced by the direction of its bends. The principle is one of nicely regulated refraction. If the river were perfectly straight, the gravity and inertia of its waters would move in a right line, with a velocity beyond all control. But we find the river very sinuous, and the momentum of current consequently lessened. For example, striking in an arm ...
— Continental Monthly , Vol. 5, No. 6, June, 1864 - Devoted to Literature and National Policy • Various

... the spots commonly so called?" it will be asked. In the essay on the Nebular hypothesis, above quoted from, it was suggested that refraction of the light passing through the depressed centres of cyclones in this atmosphere of metallic gases, might possibly be the cause; but this, though defensible as a "true cause," appeared on further consideration to be an inadequate cause. Keeping the question in mind, however, and still ...
— Essays: Scientific, Political, & Speculative, Vol. I • Herbert Spencer

... time the survey of the moon was being completed; she appeared riddled with craters, and her essentially volcanic nature was affirmed by each observation. From the absence of refraction in the rays of the planets occulted by her it is concluded that she can have no atmosphere. This absence of air entails absence of water; it therefore became manifest that the Selenites, in order to live under such conditions, must have ...
— The Moon-Voyage • Jules Verne

... day the horizon was occupied by haze, and produced a very remarkable effect upon the land, which was so raised above the horizon by refraction that many distant objects became visible that could not otherwise have been seen. This mirage had been frequently observed by us on various parts of the coast, but never produced so extraordinary an effect as on the present occasion. The coastline appeared ...
— Narrative of a Survey of the Intertropical and Western Coasts of Australia] [Volume 2 of 2] • Phillip Parker King

... over, while two merry little young scamps were diving down after it, racing to see which would get first to the coin. This soon disappeared in the disturbed water, while the figures of the boys grew more and more shadowy and distorted by the varying refraction. ...
— Jack at Sea - All Work and no Play made him a Dull Boy • George Manville Fenn

... and the two seniors were gruff and brief as to their watch. They had heard odd noises, and should discover the cause; the carpenter had already been sent for, and they had seen a light which was certainly due to reflection or refraction. Mr. Henderson committed himself to nothing but that 'it was very extraordinary;' and there was a wicked look of diversion on Griff's face, and an exchange of glances. Afterwards, in our own domain, we extracted a good deal more ...
— Chantry House • Charlotte M. Yonge

... long rushes, the tops of which alone are visible at high water. On one occasion, when in a boat, we were so entangled by these shallows that we could hardly find our way. Nothing was visible but the flat beds of mud; the day was not very clear, and there was much refraction, or, as the sailors expressed it, "things loomed high." The only object within our view which was not level was the horizon; rushes looked like bushes unsupported in the air, and water like mudbanks, and mudbanks ...
— A Naturalist's Voyage Round the World - The Voyage Of The Beagle • Charles Darwin

... what I was writing' about - and only stopped me at two places: one was at a word too strong for what I had to describe, and the other at one too weak. The doctrine he allowed to be quite orthodox, concerning gravitation, refraction, reflection, optics, comets, magnitudes, distances, revolutions, etc., but made a discovery to me which, had I known sooner, would have overset me, and prevented my reading any part of my work: ...
— The Diary and Letters of Madame D'Arblay Volume 3 • Madame D'Arblay

... appear'd, with open wings, The beauteous image, in fruition sweet Gladdening the thronged spirits. Each did seem A little ruby, whereon so intense The sun-beam glow'd that to mine eyes it came In clear refraction. And that, which next Befalls me to portray, voice hath not utter'd, Nor hath ink written, nor in fantasy Was e'er conceiv'd. For I beheld and heard The beak discourse; and, what intention form'd Of many, singly as of one express, Beginning: "For that I was just and piteous, l am exalted ...
— The Divine Comedy • Dante

... employ telescopes of two entirely different classes. The more familiar forms are those known as refractors, in which the operation of condensing the rays of light is conducted by refraction. The character of the refractor is shown in Fig. 1. The rays from the star fall upon the object-glass at the end of the telescope, and on passing through they become refracted into a converging beam, so that all intersect at the focus. Diverging from thence, the rays encounter ...
— The Story of the Heavens • Robert Stawell Ball

... said he had not as yet brought his experiments so far as the last speakers. He was not a Naturalist himself. His line was Optics. He described some interesting cases of Double Refraction, Mock Suns, and Lunar Rainbows, that had come under his notice, before sitting down with ...
— Punch, or the London Charivari, Vol. 98, 19 April 1890 • Various

... a platoon became a company for an instant under favorable light refraction. The object of British khaki, French blue and German green is invisibility, but nothing can be designed that will not be visible under certain conditions. A motley such as the "tanks" were painted would be best, but the most utilitarian ...
— My Second Year of the War • Frederick Palmer

... the next morning the sun was pouring in between her curtains of old brocade, and its refraction from the ripples of the Canal was drawing a network of golden scales across the vaulted ceiling. The maid had just placed a tray on a slim marquetry table near the bed, and over the edge of the tray Susy discovered the small serious face of Clarissa Vanderlyn. At the sight of the ...
— The Glimpses of the Moon • Edith Wharton

... believe the island has a special atmosphere of its own.... A friend tells me the phenomenon is probably due to inorganic substances floating in the air—each substance in diffusion having its own index of refraction. Substances so held in suspension by vapors would vary according to the nature of soil in different islands, and might thus produce special local ...
— Two Years in the French West Indies • Lafcadio Hearn

... man cleared his throat. "We'll cover it quickly so that we can get to the immediate practical aspects. Are you interested in biodynamics ... umah ... no, of course not. Let me see. Are you at all familiar with the laws pertaining to refraction of ... umah, no." He cleared his throat again, unhappily. "Have you ever seen a medusa, Mr. Crowley? The gelatinous umbrella-shaped free swimming form of marine invertebrate related to the coral ...
— The Common Man • Guy McCord (AKA Dallas McCord Reynolds)

... on the 19th January. On the 15th May the sun no longer set. The temperature was then under the freezing point of mercury. That the upper edge of the sun should be visible on the 19th January we must assume a horizontal refraction of nearly 1 deg.. The islands on the Yenisej are so low that there was probably a pretty open ...
— The Voyage of the Vega round Asia and Europe, Volume I and Volume II • A.E. Nordenskieold

... a great pang at the heart he rushes abroad to find her, but descries only the rainbow glimmer of her skirt on the far horizon. At night, in his dreams, she returns, but never for a season may he look on her face of loveliness. What, alas! have evaporation, caloric, atmosphere, refraction, the prism, and the second planet of our system, to do with "sad Hesper o'er the buried sun?" From quantitative analysis how shall he turn again to "the rime of the ancient mariner," and "the moving moon" that "went up the sky, and nowhere did abide"? From his window ...
— A Dish Of Orts • George MacDonald

... for himself by experiment how wide is the field of sight, without the slightest alteration in the line of vision, he will find that it takes in the entire breadth of a large room, and that up to a very short distance before him; and imperfectly, by a refraction, I believe, in the eye itself, to a point very near indeed. Next to nothing that passed in the room, therefore, was ...
— The Room in the Dragon Volant • J. Sheridan Le Fanu

... made to revolve by means of clockwork, were fed with mineral oil, a refined kerosine; and the refraction was caused by highly ...
— By Water to the Columbian Exposition • Johanna S. Wisthaler

... determination of latitude and time, and these latter in turn upon the fixing of a true meridian, that the novice can find neither beginning nor end. When to these difficulties are added the corrections for parallax, refraction, instrumental errors, personal equation, and the determination of the probable error, he is hopelessly confused, and when he learns that time may be sidereal, mean solar, local, Greenwich, or Washington, and he is referred to an ephemeris and table ...
— Scientific American Supplement No. 360, November 25, 1882 • Various

... that he abandoned its use, and betook himself to glass. He found that before he could make a good achromatic telescope it was necessary that he should calculate his curves from data depending upon the nature of the glass. He accordingly proceeded to study the optical laws of refraction, in which his knowledge of geometry and mathematics greatly helped him. And in course of time, by his rare and exquisite manipulative skill, he succeeded in constructing a four-inch refractor, or achromatic telescope, ...
— Men of Invention and Industry • Samuel Smiles

... understood that with their smokeless powder the Gray guns could be located only by their flashes, which would not be visible unless the refraction of light were favorable. Then "thur-eesh—thur-eesh" above every other sound in a long wail! No man ever forgets the first crack of a shrapnel at close quarters, the first bullet breath on his cheek, ...
— The Last Shot • Frederick Palmer

... on April 8, which Nansen has given in his book as being in latitude 86 deg. 13.6' N. But Nansen tells me that Professor Geelmuyden, who had his astronomical results and his diary, reckoned that owing to refraction the horizon was lifted, and if so the observation had to be reduced accordingly. Nansen therefore gave the reduced latitude in his book, but he considers that his horizon was very clear when he took that observation, and believes that his latitude was higher than that ...
— The Worst Journey in the World, Volumes 1 and 2 - Antarctic 1910-1913 • Apsley Cherry-Garrard

... are so distant that they cannot be seen, as in the Mesa de Pavones. A person would be tempted there to take the altitude of the sun with a quadrant, if the horizon of the land were not constantly misty on account of the variable effects of refraction. This equality of surface is still more perfect in the meridian of Calabozo, than towards the east, between Cari, La Villa del Pao, and Nueva Barcelona; but it extends without interruption from the mouths of the Orinoco to La Villa ...
— Equinoctial Regions of America V2 • Alexander von Humboldt

... of heat with the increase of elevation at different latitudes is one of the most important subjects involved in the study of meteorological processes, of the geography of plants, of the theory of terrestrial refraction, and of the various hypotheses that relate to the determination of the height of the atmosphere. In the many mountain journeys which I have undertaken, both within and without the tropics, the investigation of this law has always ...
— COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 • Alexander von Humboldt

... mentioned as a product of its volcanoes, Iceland is famed for another mineral of great scientific value. It is that fine variety of carbonate of lime named Iceland-spar. Transparent and colourless, like glass, this mineral possesses the property of double refraction—any small object viewed through it in a particular direction appearing double. It is much used for optical purposes—especially for ...
— Wonders of Creation • Anonymous



Words linked to "Refraction" :   deflection, index of refraction, birefringence, refract, physical phenomenon, deflexion, bend, angle of refraction, bending, double refraction



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