"Retina" Quotes from Famous Books
 ... movement impressions on the side parts of our eye, and that this sensitiveness is often abnormally heightened. Just when the child is looking steadily into our face or to the ceiling, the outside parts of her sensitive retina may bring to her the visible unintentional signs from her sister or mother. The untrained observer is also usually unaware how easily he helps by suggestive movements or utterances to the other observers. When Beulah gave a six instead of a nine, one of our friends whispered that she may have ...
— Psychology and Social Sanity • Hugo Muensterberg
... no pretense of looking at the frescoed walls, to examine which had been their ostensible purpose in entering. Sylvia was indeed aware of great pictured spaces, crowded dimly with thronging figures, men, horses, women—they reached no more than the outer retina of her eye. She remembered fleetingly that they had something to do with the story of Ste. Genevieve. She wanted intensely to escape from this phantom whom she herself had called up from the void to stalk at her side. But she felt she ought not to let pass, even coming from such a ...
— The Bent Twig • Dorothy Canfield
... must needs be flattened to get it on one retina. The picture of a solid thing, although it is flattened and simplified, is not necessarily a lie. Surely, surely, in the end, by degrees, and steps, something of this sort, some such understanding, as this Utopia must come. First here, then there, single men and ...
— A Modern Utopia • H. G. Wells
... by supposing all the nerves of involuntary motion which supply that tract with vitality, suddenly to be gifted with the exquisite sensitiveness to their own processes which is produced by its correlative object in some organ of special sense—the whole organism assimilating itself to a retina or a finger-tip. Sleep now disappeared. This initiated an entire month during which the patient had not one moment ...
— The Opium Habit • Horace B. Day
... color—as color—has nothing significant to say: to him grass is green, snow is white, the sky blue; and to have his attention drawn to the fact that sometimes grass is yellow, snow blue, and the sky green, is disconcerting rather than illuminating. It is only when his retina is assaulted by some splendid sunset or sky-encircling rainbow that he is able to disassociate the idea of color from that of form and substance. Even the artist is at a disadvantage in this respect, when compared with the musician. Nothing in color knowledge ...
— Architecture and Democracy • Claude Fayette Bragdon
... morning a dense fog enfolds us, and by favor of the great curtain that the sky throws over the earth one might risk it. We are sure at least of not being seen. The fog hermetically closes the perfected retina of the Sausage that must be somewhere up there, enshrouded in the white wadding that raises its vast wall of partition between our lines and those observation posts of Lens and Angres, whence the enemy spies ...
— Under Fire - The Story of a Squad • Henri Barbusse
... of all, that evident confusion in the sunshine, that hasty yet fumbling awkward flight towards dark shadow, and that peculiar carriage of the head while in the light—all reinforced the theory of an extreme sensitiveness of the retina. ...
— The Time Machine • H. G. (Herbert George) Wells
... eye-trouble produced by his observations on after-images in the retina (also a classic piece of investigation) produced in Fechner, then about thirty-eight years old, a terrific attack of nervous prostration with painful hyperaesthesia of all the functions, from which he suffered three years, cut off entirely from active life. Present-day medicine ...
— A Pluralistic Universe - Hibbert Lectures at Manchester College on the - Present Situation in Philosophy • William James
... Rochester was not only to be a lord, it was more than that. It was to be famous, a national character, whose picture was printed on the retina of the million. Never had Jones felt more inclined to stick to his position than now, with the hounds on his traces, a tramp for his companion, and darkness ahead. He felt that if he could once get to London, once lay his hands on that eight ...
— The Man Who Lost Himself • H. De Vere Stacpoole
... the stomach, while maleficent goblins kept puncturing their aguish, trembling legs with needles. Another of the physical effects of their fear was that in the congested condition of the blood vessels of the retina they beheld thousands upon thousands of small black specks flitting past them, as if it had been possible to distinguish the ...
— The Downfall • Emile Zola
... she thought, very unconscious how clearly one of the houses on the opposite side of the street was defined on the retina of either eye, — "I have learned two things by my precious yesterday's expedition, that I didn't know before — or that if I did, it was in a sort of latent, unrecognized way; — two pretty important things! — That I wish I was a Christian, — yes, I do, — and that there is a person in the world ...
— Hills of the Shatemuc • Susan Warner
... upon the sense of sight, because it is mainly through its ministrations that a real objective universe is given to us. Let the circle A be the whole circuit of vision. We may begin by calling it the eye, the retina, or what we will. Let it be provided with the ordinary complement of sensations—the colours X Y Z. Now, we admit that these sensations cannot be extruded beyond the periphery of vision; and yet we maintain that, unless they be made to fall on ...
— Blackwood's Edinburgh Magazine, Volume 54, No. 337, November, 1843 • Various
... close to the back of the optic chiasma these growths affect the fibres passing to the nasal half of each retina, and so give rise to bilateral temporal hemianopsia, and although there is no choked disc, the optic nerves undergo primary atrophy from pressure, and there is failure ...
— Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. • Alexander Miles
... with ducks towering. They mounted, and wheeled, and circled back or darted away. The sky became fairly obscured with them in the sense that it seemed inconceivable that hither space could contain another bird. Before the retina of the eye they swarmed exactly as a nearer cloud of ...
— The Killer • Stewart Edward White
... such dream was floating before his imagination, and its details were painted vivid as life upon the retina of the mind, a quiet voice, but one not without some authority, whispered ...
— The Rival Heirs being the Third and Last Chronicle of Aescendune • A. D. Crake
... steadfastly at the sun for a second or two, and then immediately close our eyes, the image, or spectrum, of the sun remains for a long time present to the mind, as if the light were still acting on the retina. It then gradually fades and disappears; but if we continue to keep the eyes shut, the same impression will, after a certain time, recur, and again vanish: and this phenomenon will be repeated at intervals, the sensation becoming fainter at each renewal. It is probable that ...
— A Strange Story, Complete • Edward Bulwer-Lytton
... irregularly; indeed, the lack of muscular adjustment is such that movements of the eye likely to alarm the parents are regularly observed in very young infants. Furthermore they cannot focus images which fall upon their eyes. The retina, which receives visual impressions, has reached such development at birth, however, that sensations of light can be perceived. For example, if a lamp is suddenly flashed before the face of a newly born ...
— The Prospective Mother - A Handbook for Women During Pregnancy • J. Morris Slemons
... see in each of these blinding intervals his figure. Each flash outlined it sharply on her retina—always the same—patient, resourceful, silent and unwearied. The man who had been directed to ride her own horse she never caught sight of. When they reached open country and better going her guide did not break the silence. He spoke only ...
— Laramie Holds the Range • Frank H. Spearman
... the conversion of one form of motion into another—a conservation, as it were, of energy. Thus, waves of light coming from a luminous body are arrested by the pigment-cells of the retina in our eyes and are transmuted into another form of motion, which is called nerve energy (in this instance, sight). It would seem that as far as sight (vision is not included) is concerned, eyes ...
— The Dawn of Reason - or, Mental Traits in the Lower Animals • James Weir
... hair and blue eyes may make up what Baron Hubner would euphemistically describe as the "beau type d'un gentleman anglais," but when worn with a funny-shaped hat, a short coat, tight trousers, and a Penang lawyer, the picture produced on the retina of a Chinese mind is unmistakably that of ...
— Chinese Sketches • Herbert A. Giles
... one of these quick glances that he experienced a blinding flash upon his retina. A second later it occurred again, and then a third time. Suspiciously the man drew his horse to a stand, and those ...
— The Free Range • Francis William Sullivan
... grunted a little, by way of rather dubious applause. Sarah Brown, with her own voice printed loud and stark upon the retina of her hearing, felt a little abashed. But presently she added in a whisper: "Listen. I am a spy. I am a lover of specially recommended neighbours only. I am here to help to give the black cloud Tyranny ...
— Living Alone • Stella Benson
... to be sensitive to rays unknown to the ordinary retina, this extraordinary sight could not be the sense that warns the butterfly at a distance and brings it hastening to the bride. Distance and the objects ...
— Social Life in the Insect World • J. H. Fabre
... bloodless, offered no complete impediment to vision. As volition was in abeyance, the balls could not roll in their sockets—but all objects within the range of the visual hemisphere were seen with more or less distinctness; the rays which fell upon the external retina, or into the corner of the eye, producing a more vivid effect than those which struck the front or interior surface. Yet, in the former instance, this effect was so far anomalous that I appreciated it only as sound—sound sweet or discordant as the matters presenting ...
— Edgar Allan Poe's Complete Poetical Works • Edgar Allan Poe
... which exists between the durations of the periods of these two categories of waves. The length of wave corresponding to the first spark-gap of Hertz was about 6 metres, and the longest waves perceptible by the retina are 7/10 of ...
— The New Physics and Its Evolution • Lucien Poincare
... country in which it lives. Certainly, the point of view is good, and the advice is well thought-out. The conclusion that the public will have an accurate view is not warranted, for the state of its eyes must be examined, to ascertain whether it is near or far-sighted, or if the retina naturally, or through habit, is sensitive to certain colors. In the same way the French of the eighteenth century must be considered, the structure of their inward vision, that is to say, the fixed form of their intelligence ...
— The Origins of Contemporary France, Volume 1 (of 6) - The Ancient Regime • Hippolyte A. Taine
... may have all the other senses, with the organs of nutrition, circulation, respiration, and locomotion. They all have a brain and nerves, and some of these nerves may be sensitive to light; but have no combination of retina, membranes, humors, etc., by which the distinct image of an object may be formed and conveyed by the optic nerve to the cognizance of the internal perception, or the mind. The animal in this case would be merely sensible of ...
— Darwiniana - Essays and Reviews Pertaining to Darwinism • Asa Gray
... then dogs crossing the bright sun picture. I was only there a few moments, and I have never been in one since, and yet so inexplicable a thing is memory, the picture stands before me now clear as if it were painted and tangible. So many millions of pictures have come and gone upon the retina, and yet I can single out this one in an instant, and take it down as you would a book from a shelf. The millions of coloured etchings that have fixed themselves there in the course of those years are all in due order in the portfolio of the mind, ...
— Field and Hedgerow • Richard Jefferies
... that can be moved forward and back until they form a sharp focus on the screen. Even the lens in your eye has muscles that make it flatter and rounder, so that it can make a clear image on the sensitive retina in the back of your eye. The lens in the eyes of elderly people often becomes too hard to be regulated in this way, and so they have to wear one kind of glasses to see things near them clearly and another kind to ...
— Common Science • Carleton W. Washburne
... an electric bulb fade away when the current is failing?" he asked. "The film pales down from glowing white to dull red, which gets fainter and fainter, little by little, till nothing but the memory of it lingers on your retina. His eyes went out exactly like that bulb. They faded and faded out of his face, which still kept up that queer, twisted smile. I've seen them ever since; wherever I turn. I shall be glad of that bout of influenza, and shall begin it with a stiff ...
— The Lost Naval Papers • Bennet Copplestone
... lines and, striking objects before us, is reflected in all directions. Some of these rays passing through a point situated behind the lenses of the eye, strike the retina. The multiplication of these rays on the retina produces a picture of whatever is before the eye, such as can be seen on the ground glass at the back of a photographer's camera, or on the table of a camera obscura, both of which instruments are constructed roughly on the ...
— The Practice and Science Of Drawing • Harold Speed
... own fingers meet its smooth, slightly hot surface; he wrenched it away and fumbled desperately at the slide. A beam, pale but wavering, shot out into the darkness as he succeeded in his effort, and by its light, as men in moments of emotion may see some one thing or action painted on their retina by a lightning flash, he saw Archelaus bringing his stick, muffled in a coat, down on Ishmael's head. The next second the blow fell—there had not been time for Archelaus to check the impetus of the blow when the discovering light flared onto him. There came the heavy sound of a body falling ...
— Secret Bread • F. Tennyson Jesse
... extensive buildings and botanical gardens, were rushed through and passed by, as if the charm and beauty of Oxford's scenes consisted rather in making the images of them flit in quick succession across the retina of the eye, than in ...
— The Youthful Wanderer - An Account of a Tour through England, France, Belgium, Holland, Germany • George H. Heffner
... house. It seemed to him that all about him was revolving through the air, that even the ground was gone from under his feet. His ears buzzed. His legs moved heavily and irregularly. Waves of blood, light and darkness, succeeded one another on the retina of his eye. ...
— Friars and Filipinos - An Abridged Translation of Dr. Jose Rizal's Tagalog Novel, - 'Noli Me Tangere.' • Jose Rizal
... them I know not what celestial flame, the like of which all the rest of nature does not afford. These eyes are a sort of looking-glasses, wherein all the objects of the whole world are painted by turns and without confusion in the bottom of the retina that the thinking part of man may see them in those looking-glasses. But though we perceive all objects by a double organ, yet we never see the objects double, because the two nerves that are subservient to sight in our eyes are but two branches that unite in one pipe, ...
— The Existence of God • Francois de Salignac de La Mothe- Fenelon
... first picture which had ever been drawn in true perspective. Of course the building looked very Egyptian, with its sloping sides. The answer to his notion is easy enough. What is called the picture is not the picture from which the mind takes its perception; that picture is on the retina. The intermediate picture, as it may be called—the human artist's work—is itself seen perspectively. If the tower were so high that the sides, though parallel, appeared to meet in a point, the picture must also be so high ...
— A Budget of Paradoxes, Volume I (of II) • Augustus De Morgan
... is a cone-shaped bit of tissue hidden away at the base of the brain in a tiny cave behind and above its larger colleague, the pituitary. Microscopic scrutiny reveals that it is made up in part of nerve cells containing a pigment similar to that present in the cells of the retina, thus clinching the argument for its ancient function as an eye. But the outstanding and specifically glandular cells are large secreting affairs, which too reach back to the tidewater days of our ...
— The Glands Regulating Personality • Louis Berman, M.D.
... as it moved up and down the spectrum, but refusing to pass out of the blue into the other colours. It was plain that the spot belonged both to the eye and to the blue part of the spectrum. The result to which I have come is, that the appearance is due to the yellow spot on the retina, commonly called the Foramen Centrale of Soemmering. The most convenient method of observing the spot is by presenting to the eye in not too rapid succession, blue and yellow glasses, or, still better, allowing blue and yellow papers to revolve ...
— Five of Maxwell's Papers • James Clerk Maxwell
... But it lies in the nature of the case that they are useless when the investigation is to be into modes of existence which cannot impress themselves on our nerve-ends. For instance, what we know as colour is the vibration frequency of etheric waves striking on the retina of the eye, between certain definite limits—759 trillions of blows from the maximum, 436 trillions from the minimum—these waves give rise in us to the sensation which the brain translates into colour. (Why the 436 trillion blows at one end of a nerve become 'Red' at the other ...
— Annie Besant - An Autobiography • Annie Besant
... original investigations of Alhazen had to do largely with optics. He made particular studies of the eye itself, and the names given by him to various parts of the eye, as the vitreous humor, the cornea, and the retina, are still retained by anatomists. It is known that Ptolemy had studied the refraction of light, and that he, in common with his immediate predecessors, was aware that atmospheric refraction affects the apparent position of stars near the horizon. Alhazen ...
— A History of Science, Volume 2(of 5) • Henry Smith Williams
... and darkness came over me. While they were so shut, I heard an explosion. Next moment, I believe, I opened them, and saw this Picture. No sensitive-plate could have photographed it more instantaneously, as by an electric spark, than did my retina that evening, as for months after I saw it all. In another moment, I shut my lids again, and all was over. There was darkness once more, and I ...
— Recalled to Life • Grant Allen
... noise. Now if I strike this tuning fork you have a vibrating note. In other words, a succession of blows or wave vibrations of a certain kind affects the ear and we call it sound, just as a succession of other wave vibrations affects the retina and we have sight. If a moving picture moves slower than a certain number of pictures a minute you see the separate pictures; faster it is one ...
— The Poisoned Pen • Arthur B. Reeve
... a suppressed scream from one of the men present. A cold hand of ice about the heart of Prester Kleig. But the words of Professor Maniel were limned on the retina of his brain in letters of fire. Suppose Moyen were to project himself into the ...
— Astounding Stories of Super-Science April 1930 • Various
... muscle, fastened at the opposite side of the joint, is pulled, and the joint bent;—or they could trace backward any of the operations of the senses,—the sight, for example, from the object seen, through the coats of the eye, to the inverted picture of it formed upon the retina, which communicated the sensation to the optic nerve, by which it was conveyed to the brain. In all which they invariably succeeded, and shewed that the whole was clearly and ...
— A Practical Enquiry into the Philosophy of Education • James Gall
... set his wits to work; and for a long while he sat in silence, as if buried in some very profound speculation. Probably, there was no material substance in that valley that did not pass in review before the retina of his mental vision; and all ...
— The Cliff Climbers - A Sequel to "The Plant Hunters" • Captain Mayne Reid
... imagine this was one of the occasions. She had known for long years how two souls could become knitted and interwoven into one, but I do not believe that before this incident she had ever comprehended how her physical self, as well, had become an ever present picture upon the mind's retina of her lover and ...
— A Man and a Woman • Stanley Waterloo
... fondly hoped was the promise of renewed and successful work. But in reality he never recovered Ireland. The mark of those two years had gone too deep. He died in April, 1886, just before the introduction of the Home Rule Bill, and I have always on the retina of the inward eye the impression of a moment at the western door of Westminster Abbey, after the funeral service. The flower-heaped coffin had gone through. My aunt and her adopted children followed it. ...
— A Writer's Recollections (In Two Volumes), Volume I • Mrs. Humphry Ward
... conceiving it to be entire brain. This it is not; but a conception of this nature will bring you near a comprehension of what it is. A luminous body imparts vibration to the luminiferous ether. The vibrations generate similar ones within the retina; these again communicate similar ones to the optic nerve. The nerve conveys similar ones to the brain; the brain, also, similar ones to the unparticled matter which permeates it. The motion of this latter is thought, of ...
— The Works of Edgar Allan Poe - Volume 2 (of 5) of the Raven Edition • Edgar Allan Poe
... an example. Its eyes also have become small and are deeply hidden in the muscles, although they are by no means as much degenerated as in the Proteus anguineus, and are still possessed of a lens and a retina. Their nerve of vision, however, has become very imperfect, and its connection with the brain is interrupted, so that the animal for this reason can have no perception of light. Notwithstanding the above, however, it ...
— Scientific American Supplement, No. 664, September 22,1888 • Various
... rock from which all other knowledge is hewn, it must be admitted that many well-proved facts are dark to the average man, even concerning the action of his own heart and the structure of his own retina. A century ago he and all his forefathers had not had the slightest notion of that electric discharge by means of which they had all wagged their tongues mistakenly; any more than they were awake to the secluded anguish of exceptional sensitiveness into which many a carelessly-begotten ...
— Daniel Deronda • George Eliot
... would have called, the sound died a murmur in his throat. His eyes were on the advancing figure; it seemed as if that object were to be forever branded on the retina. Still as he gazed, he was aware of another form, one sitting on the quay, unseen in shadow like himself, and seeing what he saw, and motionless as he. Would Mrs. Laudersdale dip her hands in murder? It all passed in a second of time; at the ...
— Atlantic Monthly Volume 6, No. 37, November, 1860 • Various
... was reported abroad, but I do not vouch for its truth. When under surgical treatment for his impaired vision, it was said that the operators in consultation decided on an experiment to test the powers of the retina to receive light, and in so doing blinded the other eye. Mr. Walsh went to England, having had a sum granted to him by the Victoria government. Whether he has recovered his ...
— Successful Exploration Through the Interior of Australia • William John Wills
... iris, choroid, and retina—the inner, vascular, and nervous coats of the eye—occur to a certain extent independently of each other, yet one usually supervenes upon the other, and, as the symptoms are thus made to coincide, it will be best for our present purposes to treat ...
— Special Report on Diseases of the Horse • United States Department of Agriculture
... something went whizzing past his head, and, embedding itself in a stunted oak behind him, shook and quivered with the shock,—a Tonto arrow. Only an instant did he see it, photographed as by electricity upon the retina, when with a sharp stinging pang and whirring "whist" and thud a second arrow, better aimed, tore through the flesh and muscles just at the outer corner of his left eye, and glanced away down the hill. With one spring he gained the edge of the shelf, ...
— Starlight Ranch - and Other Stories of Army Life on the Frontier • Charles King
... remarkable appearance, the elder Pliny, who was a great naturalist and a man of inquiring mind, resolved to go ashore and inspect more narrowly what was going on. But a rash resolve it proved. Steering towards Retina (now Resina), a port at the foot of the mountain, he was met, on his approach, by thick showers of hot cinders, which grew thicker and hotter as he advanced—falling on the ships along with lumps of pumice and pieces of rock, black but burning hot. ...
— Wonders of Creation • Anonymous
... few of the points of difference. The crystalline lens in the higher cuttle-fish consists of two parts, placed one behind the other like two lenses, both having a very different structure and disposition to what occurs in the vertebrata. The retina is wholly different, with an actual inversion of the elemental parts, and with a large nervous ganglion included within the membranes of the eye. The relations of the muscles are as different as it is possible ...
— On the Origin of Species - 6th Edition • Charles Darwin
... beauty of form and color, the grace of motion, the harmony of tone, are seen and felt and appreciated at once. The image of substantial and material loveliness once seen leaves an impression as distinct and perfect upon the retina of memory as upon that of the eyes. It does not rise before us in detached and disconnected proportions, like that of spiritual loveliness, but in crowds, and in solitude, and in all the throngful varieties of thought and ...
— The Complete Works of Whittier - The Standard Library Edition with a linked Index • John Greenleaf Whittier
... over imperial Rome. Above, that canopy of translucent blue, iridescent and scintillating with a thousand colours, flicks of emerald and crimson, of rose and of mauve that merge and dance together, divide and reunite before the retina, until the gaze loses consciousness of all colour save one all-pervading sense ...
— "Unto Caesar" • Baroness Emmuska Orczy
... instinctive sense of proportion that some men have—a sense as real as an "ear for music"; or perhaps they lack a willingness or a capability to think about a situation with sufficient intentness to force a clear picture of the situation with all its various features upon the mental retina. ...
— The Navy as a Fighting Machine • Bradley A. Fiske
... their imprints, his language grows warm, his fancy swoops and grasps the significance of detail; these dumb survivals of the past become eloquent to his ears; his eyes discover in them a reflecting retina which, obedient to his command, resuscitates former contacts, a world buried and now found again. When attempting the historical novel, in which his persons are typical rather than individual, he still preserves this exactitude of local colouring. His descriptions ...
— Balzac • Frederick Lawton
... the mind brings with it inherited aptitudes is a simple matter of observation. That it inherits truths is a different proposition. The eye does not bring landscapes into the world on its retina,—why should the brain bring thoughts? Poetry settles such questions very simply ...
— Ralph Waldo Emerson • Oliver Wendell Holmes
... leather pieces strapped across the insides of their hands as a protection against splinters. These, like all other especial accoutrements, seemed to Bob somehow romantic, to be desired, infinitely picturesque. He passed on with the clear, yellow-white of the pine boards lingering back of his retina. ...
— The Rules of the Game • Stewart Edward White
... divisible in this sense, its particles must be imponderable, and a million of such molecules could not weigh more than an infinitely small one. But the particles of that imponderable matter, which, striking upon the retina, give us the sensation of light, are not in a ...
— Familiar Letters of Chemistry • Justus Liebig
... moans of the wounded rising up and sweeping by like vague wailings of the wind—all this might be taken for an artful appropriation of Victor Hugo's text; but I do not think it was, though it is possible that a faint reflection of a brilliant page, read in early youth, still lingered on the retina of M. Rostand's memory. If such were the case, it does not necessarily detract from the integrity of the conception or the ...
— Ponkapog Papers • Thomas Bailey Aldrich
... became suddenly illuminated by a vivid flash of sheet lightning that for an infinitesimal fraction of a second seemed to set the entire visible firmament ablaze, and caused every detail of the brig's hull and equipment to imprint a clear and perfectly distinct picture of itself upon the retina. They all listened for thunder, but none came. Suddenly, however, a few heavy drops of rain pattered upon the deck, and an instant later down came a perfect deluge with the sound of millions of small shot roaring and rattling on the deck and ...
— Dick Leslie's Luck - A Story of Shipwreck and Adventure • Harry Collingwood
... of pressure results from prolonged sitting or lying in one position, and as a result pain compels a muscular action that shifts the damaging pressure—this is the pain of anemia; when the rays of the blazing sun shine directly upon the retina, pain immediately causes a protective muscular action—the lid is closed, the head turns away—this is light pain; when standing too close to a blazing fire the excessive heat causes a pain which results in the protective muscular ...
— The Origin and Nature of Emotions • George W. Crile
... closed at last, occurred that strange trick of picture-making that the overtaxed brain plays upon the retina. A swift series of pictures of the day's doings began to whirl THROUGH rather than BEFORE the pupils of his shut eyes. Condy saw again a brief vision of the street, and Blix upon the corner waiting to cross; then it was the gay, brisk confusion of the water-front, the old mate's cabin aboard ...
— Blix • Frank Norris
... this quality to difference in the LENGTH of ether waves impinging on the retina, which causes the sensation of color. The wave length M. 5269 gives a sensation of green, while M. 6867 ...
— A Color Notation - A measured color system, based on the three qualities Hue, - Value and Chroma • Albert H. Munsell
... next step is to realize that this ether is everywhere. This is shown by the undulatory theory of light. Light is not a substance but is the effect produced on the eye by the impinging of the ripples of the ether upon the retina. These waves are excessively minute, ranging in length from 1-39,000th of an inch at the red end of the spectrum to 1-57,000th at the violet end. Next remember that these waves are not composed of advancing ...
— The Creative Process in the Individual • Thomas Troward
... Physiological Society of London, in November 1900. It may be mentioned here, by the way, that, in course of his investigations on the Response of the Living and Non-Living substances, Dr. Bose constructed an "artificial retina" to study the characteristics of the excitatory change produced by a stimulus on the retina and these characteristics gave him a clue to the unexpected discovery of the "binocular alteration of vision" in man—"each ...
— Sir Jagadis Chunder Bose - His Life and Speeches • Sir Jagadis Chunder Bose
... was—immunity from his debts. They had grown on him latterly, as much as the work had. Careless Roland saw no way out of that difficulty, any more than he did out of the other, except by an emigration to that desired haven which had stereotyped itself on the retina of his imagination in colours of the brightest phantasy—Port Natal. For its own sake, Roland was hurrying to get to it, as well as that it might be convenient ...
— The Channings • Mrs. Henry Wood
... real one only when the thing was gone? I'm not an imaginative man; my mind, at home, usually worked with some precision; but this,—there seems to be, you might say, a blur, a—film over my mental retina. You see, I'm not a psychologist, and therefore can't use the big, foggy terms of man's conceit to explain what he never can explain,—himself, ...
— The Spinner's Book of Fiction • Various
... magic, the sudden blotting out of the slim human figure, the substitution of the draped form as she moved from the light into the shadow. But on Kingozi's retina remained the vision of her as she was. He ...
— The Leopard Woman • Stewart Edward White et al
... transverse axis) as well as downwards. These are relics of old surgery, and very rarely practised by any oculists of eminence, as, though easy to perform, and with very flattering immediate results, the risks of chronic inflammation of the whole globe and injury to the retina ...
— A Manual of the Operations of Surgery - For the Use of Senior Students, House Surgeons, and Junior Practitioners • Joseph Bell
... be shown even by a dying animal, whose breasts he had cut off, and whose spinal cord he had severed? Is it Magendie, operating for cataract and plunging the needle to the bottom of the patient's eye, that by experiment upon a human being he might see the effect of irritating the retina? ... Surely, in these names, and such as these, there can be no uplift or inspiration to young men toward that unselfish service and earnest work which alone shall help toward the amelioration of ...
— An Ethical Problem - Or, Sidelights upon Scientific Experimentation on Man and Animals • Albert Leffingwell
... the particles appear to be at perfect rest? How could we, even by the assistance of a telescope, see the most distant stars, if there was not a progressive motion of light from these stars to the retina ...
— The System of Nature, Vol. 1 • Baron D'Holbach
... sell by detale vendi. Retail, by pomalgrande, detale. Retail (trade) detala. Retailer revendisto. Retain gardi, teni. Retainer vasalo. Retaliate revengxi. Retaliation revengxo. Retard prokrasti, malhelpi. Retardation prokrasto, malhelpo. Retentive persista, premorebla. Retina retino. Retinue sekvantaro. Retire reeniri. Retirement kvieteco. Retort respondi, reparoli. Retort (chem. vessel) retorto. Retouch (revise) korekti. Retrace reveni, repasxi. Retract malkonfesi. Retreat (place) rifugxejo. ...
— English-Esperanto Dictionary • John Charles O'Connor and Charles Frederic Hayes
... heavens. The observer's back was turned to it, but on looking round the streak of light was seen to remain on its path some seconds. This streak is usually explained to be only the continuance of the impression made by the shining body on the retina. This cannot be, as in this case the meteor was not actually seen and yet the streak was clearly perceived. The rays of planets and stars also require another explanation than that ...
— A Popular Account of Dr. Livingstone's Expedition to the Zambesi and Its Tributaries • David Livingstone
... magic mirror, and transforms all that it encloses. There is a vastness of depth, too, in that concave hemisphere, through which the vision sinks like a falling star, that excites and fills the imagination. What it shows is only a shadow, but all things seen are mere shadows painted on the retina, and you have, at such times, a realistic sense of the beautiful and bold imagery which calls a favorite fountain of the East the Eye of ...
— Lippincott's Magazine Of Popular Literature And Science, No. 23, February, 1873, Vol. XI. • Various
... ago men imagined they had explained vision by saying that the luminous action of bodies produces on the retina pictures representative of external forms and colours. To this the physiologists [query, the physiologists] have objected, with reason, that if it was as images that the luminous impressions acted, there needed another eye within the eye to behold them. Does not a similar objection ...
— Blackwood's Edinburgh Magazine, No. CCCXXIX. - March, 1843, Vol. LIII. • Various
... its limit of vision in the stars of the sixth magnitude. The light of fainter stars than these does not affect the retina enough for them to be seen. A very small telescope penetrates to smaller, and, in general, without doubt, to more distant stars. A more powerful one penetrates deeper into space, and as its power is increased, so the boundaries of the visible universe are widened, ...
— Sir William Herschel: His Life and Works • Edward Singleton Holden
... will, or connected by the ordinary associative links of the metaphysician. Fixing my mind on a certain object, I strove to call it up in the character, not of an image of the conceptive faculty, but of a fever-vision on the retina. The image which I pictured to myself was that of a death's head, yellow and grim, and lighted up, as if from within, amid the darkness of a burial vault. But the death's head obstinately refused to rise. I had no control, ...
— The Cruise of the Betsey • Hugh Miller
... laws, and relate not to the mind, but to the eye,—not to the province of the metaphysician, but to that of the professor of optics. The lens of the camera obscura transmits the figures to the prepared paper, on quite the same principle on which in vision the crystalline lens conveys them to the retina. In the centre of the field in both cases there is much distinctness, while all around its circumference the images are indistinct and dim. We have but to fix the eye on some object directly in front of us, and then attempt, without removing it, to ascertain the forms of ...
— Leading Articles on Various Subjects • Hugh Miller
... good. Researchers are already using this new technique to target and destroy cells that cause breast cancer. Soon, we may be able to use it to prevent the onset of Alzheimer's Disease. Scientists are also working on an artificial retina to help many blind people to see and microchips that would directly stimulate damaged spinal cords and allow people who are now paralyzed ...
— Complete State of the Union Addresses from 1790 to the Present • Various
... recall, I should have to own that there are very few such. The two pictures which I have already referred to, those of Erasmus and of Dr. Johnson, come up more distinctly before my mind's eye than almost any faces of the living. My mental retina has, I fear, lost much of its sensitiveness. Long and repeated exposure of an object of any kind, in a strong light, is necessary to ...
— Our Hundred Days in Europe • Oliver Wendell Holmes
... (Figure 8) has a tough, dense, outer coat, the sclerotic (sc.), within which is a highly vascular and internally pigmented layer, the choroid, upon which the percipient nervous layer, the retina (r.) rests. The chief chamber of the eye is filled with a transparent jelly, the vitreous humour (v.h.). In front of the eye, the white sclerotic passes into the transparent cornea (c.). The epidermis is continued over the outer face of this as a thin, ...
— Text Book of Biology, Part 1: Vertebrata • H. G. Wells
... comprehensive glance that he had seen this, and it seemed still to be passing panorama-like across the retina of his eyes, when the faint flame died out and he dropped upon his knees beside the ...
— To Win or to Die - A Tale of the Klondike Gold Craze • George Manville Fenn
... persons. Thus, there are people who, when they once see any word (we will say a proper name) written or printed, can always afterwards spell that word unerringly, no matter how uncommon it may be. The mental retina, so to speak, receives so clear and exact an impression of the form of that word from the eye, that it retains and ...
— A Book for All Readers • Ainsworth Rand Spofford
... whom it is always morning, and others who remember something of the radiance of the young day even in the heart of midnight. These disprove the postulates of sameness and satiety, these are not smitten by the seen fact as are you of the microscopic retina, these "see life ...
— The Kempton-Wace Letters • Jack London
... now watch the passage of the great mortar shells through the sky, looking like swiftly moving comets cleaving unfathomable space; then, falling, faster and faster, dropping out of the heights of night, they seemed to leave behind them tracks of fire that lingered on the dazzled retina long after they had disappeared. The explosion of the incendiary shells was even more spectacular; the burning matter of the chemical charge fell from them in showers of clear blue and golden stars, dropping slowly toward the ...
— Ailsa Paige • Robert W. Chambers
... certainly ought to if she has the desire; and she has time enough yet if the right man only thinks so. It is rather on the system I am pondering than on the individual, though the vision of Josie at thirty unwedded, and a little hard and worn, haunts my retina and makes me feel philosophical. Away down in the bottom of my boots or my soul, or wherever a man can most safely harbor a secret reflection, has long lain a feeling of wonder that the world continues to put its daintiest, most cherished, and ...
— The Opinions of a Philosopher • Robert Grant
... point to open his eye-lids the smallest possible bit, so that any one looking at him would have failed to observe any motion in them. The little slit however, admitted the whole scene to the retina, and he perceived that ten of the most cut-throat-looking men conceivable were seated in a semicircle in the act of receiving portions from the big pot into tin plates. Most of them were clothed in hunters' leathern costume, wore long boots with spurs, ...
— Charlie to the Rescue • R.M. Ballantyne
... draw them truly. It is, for instance, almost never that the wheel of a carriage really is round to your eye. It is round to your thought. But unless your eye is exactly opposite the hub of the wheel in the line of the axle, the wheel does not make a circle on the retina of your eye, and ought not to be represented by a circle in your drawing. To draw well, the first resolution and the first duty is to see well. Second, do not suppose that mere technical method has much to do with real success. Soft ...
— How To Do It • Edward Everett Hale
... hand before my face, but could not distinguish by sight that it was there. A few pale, phosphorescent gleams, that seemed to be wandering in the air, I was convinced were only the remembrances of the optic nerve,—eidolons of the retina; but they seemed to some extent plastic to my thoughts, and ready to become the subjective creations of the brain, outlined in the dark. I could conceive then how the brain, excited by fear, or stimulated by ...
— The Atlantic Monthly, Volume 20, No. 122, December, 1867 • Various
... we remember the figures of our dreams as optical images, though they have been purely mental conceptions, translated into the terms of actual sight. The impression of a dream-figure, indeed, appears to us to be as much the impression of an image received upon the retina of the eye, as our impressions of images actually so received. The whole thing is strange, of course, but not stranger than wireless telegraphy. It may be that the conditions of telepathy may some day be scientifically defined; and in that ...
— From a College Window • Arthur Christopher Benson
... the fireplace; while his companion nursed his bruises and scowled from a safe refuge behind the table. The unshaven faces of several others of the gang were peering curiously in through the open door. I know now I saw all this, for the picture of it is upon the retina of memory, but at the moment everything I appeared to perceive or hear occurred in the ...
— My Lady of the North • Randall Parrish
... laid a more delicate, friable membrane, consisting mainly of blood vessels and pigment cells (the choroid), which in its turn is lined by the extremely delicate and sensitive expansion of the nerve of sight (the retina). The anterior fifth of the globe of the eye bulges forward from what would have been the direct line of the sclerotic, and thus forms a segment of a much smaller sphere than is inclosed by the sclerotic. Its walls, too, have in health a perfect translucency, from which it has derived ...
— Special Report on Diseases of the Horse • United States Department of Agriculture
... front of the eye in a dark room, it appears not as an illuminated spark, but as a line of fire; a so-called shooting star, or a flash of lightning produces the same effect. This result is purely physiological, and is due to the fact that the retina of the eye may be considered as practically a sensitized plate of relatively slow speed, and an image impressed upon it remains, before being effaced, for a period of from one-tenth to one-seventh of a second, varying according to ...
— Edison, His Life and Inventions • Frank Lewis Dyer and Thomas Commerford Martin
... suffered my eye only to glance in its vicinity alone. I was not, of course, at that time aware that this apparent paradox was occasioned by the center of the visual area being less susceptible of feeble impressions of light than the exterior portions of the retina. This knowledge, and some of another kind, came afterwards in the course of an eventful five years, during which I have dropped the prejudices of my former humble situation in life, and forgotten the bellows-mender in far different occupations. But at the epoch ...
— The Works of Edgar Allan Poe - Volume 1 (of 5) of the Raven Edition • Edgar Allan Poe
... reasonable theory of optics, and especially of dioptrics or vision through lenses. He compared the mechanism of the eye with that of Porta's "Camera Obscura," but made no attempt to explain how the image formed on the retina is understood by the brain. He went carefully into the question of refraction, the importance of which Tycho had been the first astronomer to recognise, though he only applied it at low altitudes, and had not arrived at a true theory or accurate values. Kepler wasted ...
— Kepler • Walter W. Bryant
... that, in the nature of things, many minds must change their key now and then, on penalty of getting out of tune or losing their voices. You know, I suppose,—he said,—what is meant by complementary colors? You know the effect, too, which the prolonged impression of any one color has on the retina. If you close your eyes after looking steadily at a RED object, you see a ...
— The Autocrat of the Breakfast-Table • Oliver Wendell Holmes, Sr. (The Physician and Poet not the Jurist)
... neither cold nor sound, but is made in terms of size, shape, and inherent qualities; for at least every object appears to my fingers standing solidly right side up, and is not an inverted image on the retina which, I understand, your brain is at infinite though unconscious labour to set back on its feet. A tangible object passes complete into my brain with the warmth of life upon it, and occupies the same place that it does in space; for, without egotism, the mind is as ...
— The World I Live In • Helen Keller
... clambering motion was now increasing, and likewise the defect of sight. He ran against almost every person and every thing. The cornea was transparent, the iris contracted, there was no opacity of the lens, or pink tint of the retina, but a peculiar glassy appearance, as unconscious of everything around it. An emetic was given, and, after that, an ounce ...
— The Dog - A nineteenth-century dog-lovers' manual, - a combination of the essential and the esoteric. • William Youatt
... discourses of an idiot. Fatalities of flesh and blood, unending strife,—I saw all pass before my eyes, until night caused me to lose my taste for day, and now I cannot distinguish flowers from thistles. Everything is confused in my wearied retina. ...
— Brazilian Tales • Joaquim Maria Machado de Assis
... been maintained by high authority, that the natural acuteness of our sensuous faculties cannot be heightened by use, and hence, that the minutest details of the image formed on the retina are as perfect in the most untrained as in the most thoroughly disciplined organ. This may be questioned, and it is agreed on all hands that the power of multifarious perception and rapid discrimination may be immensely ...
— The Earth as Modified by Human Action • George P. Marsh
... and the close attention consequently necessary causes both the eyes and the brain to tire. Most persons quickly find this out themselves, and the tendency is rather to hold the book too near, for the nearer the object to the eye, the larger its picture upon the retina, or back eye wall. But here we encounter another danger. The nearer the object the eyes are concentrated upon, the greater the muscular effort necessary; so that by holding the book too near, the labor of reading is greatly ...
— Scientific American Supplement, No. 647, May 26, 1888 • Various
... and wandered back with him through all the weary days of famine and disease; and with him was also the patient Madeline, sharing his pains and perils, never doubting, never complaining. His mind's retina vibrated to a score of pictures, stern, clear-cut, and the hand of the past drew back with heavy fingers on his heart. It was the psychological moment. Malemute Kid was half-tempted to play his reserve card and win the game; but ...
— The Son of the Wolf • Jack London
... since the days of Bomba, and the old royal demesne has been turned into an agricultural college. Adjoining and practically forming part of Portici is the town of Resina, which preserves almost intact the old classical name of Retina that it bore in the distant days when it served as the port of Herculaneum. Here then in the mean streets of Resina we find ourselves standing above, though certainly not upon, historic ground, for the ...
— The Naples Riviera • Herbert M. Vaughan
... possess the hare; then follows a longer or shorter train of other thoughts, which end in a volition and an act—the loosing of the greyhound from the leash. These several thoughts are the concomitants of a process which goes on in the nervous system of the man. Unless the nerve-elements of the retina, of the optic nerve, of the brain, of the spinal cord, and of the nerves of the arms, went through certain physical changes in due order and correlation, the various states of consciousness which have been enumerated would not make their ...
— Darwiniana • Thomas Henry Huxley
... instantaneously; indeed, by using platinum wires on the receiver connected with the negative pole, by the incandescence of these wires according to the different degrees of electricity we can obtain a picture, of a fugitive kind, it is true, but yet so vivid that the impression on the retina does not fade during the relatively very brief space of time the slide occupies in traveling over all the contacts. A Ruhmkorff coil may also be employed for obtaining sparks in proportion to the current emitted. The apparatus is ...
— Scientific American Supplement No. 275 • Various
... much the same as music is to our ear. You know we can distinguish different notes when the air-waves play slowly or quickly upon the drum of the ear (as we shall see in Lecture VI) and somewhat in the same way the tiny waves of the ether play on the retina or curtain at the back of our eye, and make the nerves carry different messages to the brain: and the colour we see depends upon the number of waves which play upon ...
— The Fairy-Land of Science • Arabella B. Buckley
... except the fate of the soul; and literature is only redeemed from an utter triviality, surpassing that of naughts and crosses, by the fact that it describes not the world around us or the things on the retina of the eye or the enormous irrelevancy of encyclopaedias, but some condition to which the human spirit can come. All good writers express the state of their souls, even (as occurs in some cases of very good writers) ...
— Appreciations and Criticisms of the Works of Charles Dickens • G. K. Chesterton
... in town,' said Colonel Delville, whereupon Mrs. Mostyn, while counters were being distributed, explained to the company on scientific principles why the room was comfortable, expatiating upon the effect of yellow and brown upon the retina, and some curious facts relating to the optic machinery of water-fleas, as lately discovered by ...
— Phantom Fortune, A Novel • M. E. Braddon
... focus is another proof of the illusion of material sense. On the eye's retina, sky and tree-tops apparently join hands, clouds and ocean meet 122:18 and mingle. The barometer, - that little prophet of storm and sunshine, denying the testimony of the senses, - points to fair weather in the midst of murky 122:21 clouds and drenching rain. Experience is ...
— Science and Health With Key to the Scriptures • Mary Baker Eddy
... vegetables seems to depend on a disagreeable sensation in some distant part, and not on the irritation of the muscles themselves. Thus when a particle of dust stimulates the ball of the eye, the eye-lids are instantly closed, and when too much light pains the retina, the muscles of the iris contract its aperture, and this not by any connection or consent of the nerves of those parts, but as an effort to prevent or to remove a disagreeable sensation, which evinces that vegetables are endued with sensation, or that each bud has ...
— The Botanic Garden - A Poem in Two Parts. Part 1: The Economy of Vegetation • Erasmus Darwin
... adhesiveness. His ear grasps the true ring of certain potteries, porcelains, or qualities of beaten metal. I know an expert on Japanese pottery who, when a sixth sense tells him that two pots apparently identical come really from different kilns, puts them behind his back and refers the matter from his retina to his finger-tips. Thus alternately challenged and trusted, the eye should become extraordinarily expert. A Florentine collector once saw in a junk-shop a marble head of beautiful workmanship. Ninety-nine amateurs out of a hundred would have said. "What a beautiful ...
— The Collectors • Frank Jewett Mather
... in upon the shunting screen the infra-red transformer. This device, developed long before to render possible the use of Terrestrial eyes in the opaque atmosphere of Venus, stepped up the fog-piercing long waves into the frequencies of light capable of affecting the earthly retina. Instantly the dull gray blank of the shunting screen became transformed into a clear and colorful picture of the great city of ...
— Spacehounds of IPC • Edward Elmer Smith
... if his retina had reacted like a photographic plate, a picture developed itself, which, in the end, by a series of recurrences, became quite singularly circumstantial. The dog-cart and its occupants, with the stretch of brown road, and the hedge-rows and meadows at either side, were visible ...
— The Lady Paramount • Henry Harland
... condition in which the axis of the eye gradually grows longer. This lengthening is accompanied by stretching of the eyeball, and such children always run the risk of the inner and most important part of the wall of the eye, the retina or nerve layer, being torn away, and blindness resulting. When nearsightedness is discovered early, and glasses are given that make distant vision normal, and all needless near work forbidden, the myopia may be held in check, and any considerable increase prevented. Teachers ...
— Five Lectures on Blindness • Kate M. Foley |
