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More "Retina" Quotes from Famous Books
 ... and "light" means the effect of the one on the other;—and perhaps, also—(Plato saw farther into that mystery than any one has since, that I know of),—on something a little way within the eyes; but we may stand quite safe, close behind the retina, ...
— The Ethics of the Dust • John Ruskin
... was it he saw? for, sure as eyes were eyes, there was an island outlined upon the retina, so plainly perceptible, that his senses ...
— The Ocean Waifs - A Story of Adventure on Land and Sea • Mayne Reid
... 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 shifted, ...
— The Leopard Woman • Stewart Edward White et al
... 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 when at last he stopped the horse and ...
— Laramie Holds the Range • Frank H. Spearman
... idly backward to the old home, reviewing the years of war that had transformed me from boy to man as though by some magic. The varied incidents of march, camp, and battle were like dreams, so swiftly did they pass across the retina of the brain, each stirring event leading to another as I climbed from the ranks to command. Yet at the end of all came again the vision of Claire Mortimer, and I was seeing in her blue eyes the hope of the future. The candle sputtering ...
— My Lady of Doubt • Randall Parrish
... 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 ...
— The Autocrat of the Breakfast-Table • Oliver Wendell Holmes, Sr. (The Physician and Poet not the Jurist)
... the Locust is not sufficiently conspicuous to attract attention by itself. Then let us try red, the brightest colour to our retina and probably also to the Spiders'. None of the game hunted by the Epeirae being clad in scarlet, I make a small bundle out of red wool, a bait of the size of a Locust. I glue it ...
— The Wonders of Instinct • J. H. Fabre
... the pit of 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
... creating a world, composed of material and spiritual phenomena, ordained from the beginning that these several phenomena should proceed in parallel lines side by side in a constantly corresponding harmony. The sense of seeing results, it appears to us, from the formation of a picture upon the retina. The motion of the arm or the leg appears to result from an act of will; but in either case we mistake coincidence for causation. Between substances so wholly alien there can be no intercommunion; and we only suppose that the object seen produces the idea, and that the desire produces ...
— Froude's Essays in Literature and History - With Introduction by Hilaire Belloc • James Froude
... 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 ...
— Chinese Sketches • Herbert A. Giles
... 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 pencil rather than hard; sepia rather than India ink. It is ...
— How To Do It • Edward Everett Hale
... my literary calamity as a warning to my sedentary brothers. When my eyes dwell on any object, or whenever they are closed, there appear on a bluish film a number of mathematical squares, which are the reflection of the fine network of the retina, succeeded by blotches which subside into printed characters, apparently forming distinct words, arranged in straight lines as in a printed book; the monosyllables are often legible. This is the process of a few seconds. It is remarkable that the usual power of the eye ...
— Literary Character of Men of Genius - Drawn from Their Own Feelings and Confessions • Isaac D'Israeli
... 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
... 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
... organ of 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
... observed to lighten the whole 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 ...
— A Popular Account of Dr. Livingstone's Expedition to the Zambesi and Its Tributaries • David Livingstone
... she was gone. Shutting them again and opening, there she was, sunning herself, breathing deep and long, watching her own beauties as the light played with them. I tried this many times and it did not fail me. I could, with her assistance, bring her upon my retina or take her off it, as if I had worked a shutter across my eyes. But as I watched her so I got very excited. Her business was so mysterious, her pleasure in it so absorbing; she was visible and yet secret; I was visible, and yet she could be ignorant of it. I got the same throbbing ...
— Lore of Proserpine • Maurice Hewlett
... find a very delicate, dark-red membrane, very rich in blood-vessels—the choroid coat—and inside this the retina (o), the expansion of the optic nerve (i). The latter is the second cerebral nerve. It proceeds from the optic thalami (the second cerebral vesicle) to the eye; penetrates its outer envelopes, and then spreads out like ...
— The Evolution of Man, V.2 • Ernst Haeckel
... stone, and water, shine crimson in the light of a setting sun; but there is also the fact, which is not well known, that the eye may show its own hidden red—the crimson colour which is at the back of the retina and which is commonly supposed to be seen only with the ophthalmoscope. Nevertheless I find on inquiry among friends and acquaintances that there are instances of persons in which the iris when directly in front of the observer with the ...
— Afoot in England • W.H. Hudson
... 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 particles of the medium but pass onwards by the push which each particle in the line of ...
— The Creative Process in the Individual • Thomas Troward
... mountains in the coals of his grate; another by gentleness only sunshine and grasses on Monadnock. You will not say that he chooses, but that he is chosen so to see. Light opens the eye without our intention, and we are at no trouble to paint on the retina what must there appear. Success is fidelity to that which must appear. Weak men discuss forever the laws of Art, and contrive how to paint, questioning whether this or that element should have emphasis or be shown. If there is any question, there ...
— The Atlantic Monthly, Vol. 13, No. 76, February, 1864 • Various
... silver plate that once belonged to John Company, Bahadur, and that now repose on the groaning board of the Great Ornamental, amid a glory of Himalayan flowers, or blossoms from Eden's fields of asphodel, be reflected upon the eye's retina without producing positive thrills and vibrations of joy (that cannot be measured in terms of ohm or farad) shooting up and down the spinal cord and into the most hidden seats of pleasure! I certainly can never see the luxurious bloom of the silver sticks arranged in careless ...
— Twenty-One Days in India; and, the Teapot Series • George Robert Aberigh-Mackay
... case and had wired the authorities of the adjoining States to be on the look out for the guilty parties. There followed a description of the guilty parties photographed accurately from Mr. Bat Brydges's retina. ...
— The Freebooters of the Wilderness • Agnes C. Laut
... vastness of St. Peter's, the huge bronze canopy, the excited intention in the attitudes and garments of the prophets and evangelists in the mosaics above, and the red drapery which was being hung for Christmas spreading itself everywhere like a disease of the retina. ...
— Middlemarch • George Eliot
... are non-conductive to electric waves of ordinary length. Were the energy of a Marconi sending-instrument applied to an arc-lamp, it would generate a beam of a thousand candle-power. We have thus a means of comparing the sensitiveness of the retina to light with the responsiveness of the Marconi coherer to electric waves, after both radiations have undergone ...
— Little Masterpieces of Science: - Invention and Discovery • Various
... 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 ...
— Edison, His Life and Inventions • Frank Lewis Dyer and Thomas Commerford Martin
... Signac, who has painted some portraits and numerous landscapes. To these two painters is due the method of Pointillism, i.e. the division of tones, not only by touches, as in Monet's pictures, but by very small touches of equal size, causing the spheric shape to act equally upon the retina. The accumulation of these luminous points is carried out over the entire surface of the canvas without thick daubs of paint, and with regularity, whilst with Manet the paint is more or less dense. The theory of complementary colours is systematically applied. ...
— The French Impressionists (1860-1900) • Camille Mauclair
... from birth. Hence, the only possible way of correcting it is by the addition to the imperfect eye of carefully fitted lenses or spectacles which will neutralize this mechanical defect. To put it very roughly, if the eye is too flat to bring the light-rays to a focus upon the retina, which is far the commonest condition (the well-known "long sight," or hyperopia), we put a plus or bulging glass before the eye and thus correct its shape. But if the eye is too round and bulging, producing the familiar ...
— Preventable Diseases • Woods Hutchinson
... eye is kept constantly moving from object to object scarcely a suggestion of this blurred appearance can be detected. The phenomenon is striking, since, if the eye moves in the same direction as the train, it is certain that the images on the retina succeed one another even more rapidly than when the eye is at rest. A supposition which occurs to one at once as a possible explanation is that perchance during eye-movement the retinal ...
— Harvard Psychological Studies, Volume 1 • Various
... you've got it down to shut your eyes, and open them very cautiously in a minute or so's time. One still sees. The sense of vision is a question of length of vibration, and not of multitude of impacts; but there's a kind of shock to the retina, a nasty giddy confusion just at the time, if the eyes ...
— Twelve Stories and a Dream • H. G. Wells
... 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 that the picture-sides, though ...
— A Budget of Paradoxes, Volume I (of II) • Augustus De Morgan
... sound, have tuned themselves at last into a perfect gamut in the developed ear of men and mammals. Meanwhile corresponding percipient centres have grown up in the brain, so that the coloured picture flashed by an external scene upon the eye is telegraphed from the sensitive mirror of the retina, through the many-stranded cable of the optic nerve, straight up to the appropriate headquarters in the thinking brain. Stage by stage the continuous process has gone on unceasingly, from the jelly-fish with its tiny black specks of eyes, through infinite steps of progression, ...
— Falling in Love - With Other Essays on More Exact Branches of Science • Grant Allen
... wonder. He told me the other day that he is going to cure what is called split retina, which ...
— The Further Adventures of Quincy Adams Sawyer and Mason's Corner Folks • Charles Felton Pidgin
... as 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 ...
— The Lady Paramount • Henry Harland
... not produce any motion in us if it is not itself in motion. As soon as I see an object, my eyes must be struck by it; I can not conceive of light and of vision without a motion in the luminous, extended, and colored body which communicates itself to my eye, or which acts upon my retina. As soon as I smell a body, my olfactory nerve must be irritated or put into motion by the parts exhaled from an odorous body. As soon as I hear a sound, the tympanum of my ear must be struck by the air put in motion by a sonorous body, which could not act if it was not moved of itself. ...
— Superstition In All Ages (1732) - Common Sense • Jean Meslier
... 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 same ...
— The Practice and Science Of Drawing • Harold Speed
... the compound eye is at the base of the ommatidia, at their junction with the optic nerve; see retina. ...
— Explanation of Terms Used in Entomology • John. B. Smith
... is her work then—the giving of Form; then the separately Apolline work is the giving of Light; or, more strictly, Sight: giving that faculty to the retina to which we owe not merely the idea of light, but the existence of it; for light is to be defined only as the sensation produced in the eye of an animal, under given conditions; those same conditions ...
— The Crown of Wild Olive • John Ruskin
... in the same state until the 7th of December. The uncertain clambering motion was now increasing, and likewise the defect of sight. He ran against almost every person and every thing. The cornea was transparent, the iris contracted, there was no opacity of the lens, or pink tint of the retina, but a peculiar glassy appearance, as unconscious of everything around it. An emetic was given, and, after that, an ounce of ...
— The Dog - A nineteenth-century dog-lovers' manual, - a combination of the essential and the esoteric. • William Youatt
... and the section mounted in Farrant's solution or glycerine. The kidney may be treated in the same way. The cornea of the eye can be readily cut by embedding in paraffin, and the section may be mounted in Farrant's solution. The crystalline lens and retina may ...
— Scientific American Supplement, No. 492, June 6, 1885 • Various
... remain, but monarchs have ceased to visit Portici 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 temples and villas, the theatres and private houses of the famous buried ...
— The Naples Riviera • Herbert M. Vaughan
... Administration, human and divine. As an epitome or miniature, then, the Laws of Language must be an exact reproduction of the Laws of the Universe. Language itself, in other words, must be an epitome or miniature image, in all its perfection, of the Universe at large; as the image formed upon the retina of the eye, though infinitely small in the comparison, is an exact epitome or image, inversely, of the external world presented ...
— Continental Monthly , Vol. 5, No. 6, June, 1864 - Devoted to Literature and National Policy • Various
... suffering. Then it happened. One of the lads, apparently startled, let off his gun. The charge struck a tree a few yards off, and the shot glanced. It did not strike him full. The face is only slightly peppered and the brain quite uninjured. But shots pierced the retina of each eye, and the ...
— The Rosary • Florence L. Barclay
... 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 ...
— Leading Articles on Various Subjects • Hugh Miller
... prevents too much light from entering. At night, or whenever the light is scarce, the eye often requires to grasp all it can. The pupil then expands; more and more light is admitted according as the pupil grows larger. The illumination of the image on the retina is thus effectively controlled in accordance with ...
— The Story of the Heavens • Robert Stawell Ball
... second pair of cranial nerves. In mammalia, the eyes are limited to two in number, which in man are placed in circular cavities of the skull, beneath the anterior lobes of the cerebrum. Three membranes form the lining of this inner sphere of the eye, called respectively the Sclerotic, Choroid, and Retina. ...
— The People's Common Sense Medical Adviser in Plain English • R. V. Pierce
... mid-morning throws 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 ...
— "Unto Caesar" • Baroness Emmuska Orczy
... there is some interpretation of nature to which man as such is equal in some degree. He derives an impression from the sight of nature which an animal does not derive; for though the material spectacle is imprinted on its retina, as it is on man's, it does not see what man sees. The sun rose, then, and the sun descended, the stars looked down upon the earth, the mountains climbed to heaven, the cliffs stood upon the shore, the same as now, countless ages before a single being existed who saw it. The counterpart of this ...
— Occasional Papers - Selected from The Guardian, The Times, and The Saturday Review, - 1846-1890 • R.W. Church
... 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 is doubtful whether the ...
— Scientific American Supplement, No. 664, September 22,1888 • Various
... matters in hand, and it is called logic; but it is not by logic, certainly not by logic alone, that the faculty I speak of is acquired. The infant does not learn to spell and read the hues upon his retina by any scientific rule; nor does the student learn accuracy of thought by any manual or treatise. The instruction given him, of whatever kind, if it be really instruction, is mainly, or at least pre-eminently, this,—a ...
— The Idea of a University Defined and Illustrated: In Nine - Discourses Delivered to the Catholics of Dublin • John Henry Newman
... distant unchartered world two ships lay wrecked and a lone man stared at a star hyacinth. Its brilliance burned into his retina ... and he knew that men could easily kill and kill ...
— The Star Hyacinths • James H. Schmitz
... light vessel to be got ready, and gave me the liberty, if I thought proper, to attend him. I rather chose to continue my studies, for, as it happened, he had given me an employment of that kind. As he was passing out of the house he received dispatches: the marines at Retina, terrified at the imminent peril (for the place lay beneath the mountain, and there was no retreat but by ships), entreated his aid in this extremity. He accordingly changed his first design, and what he began ...
— The San Francisco Calamity • Various
... 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 ...
— Under Fire - The Story of a Squad • Henri Barbusse
... other quite cool. For he who has not something of the artist about him, who cannot paint beautiful landscapes in his head, will never see any outside. Beautiful nature, this most subjective of all works of art, which is painted on the retina of the eye instead of on wood or canvas, will differ every time according to the mental viewpoint of the onlooker; and as it is with individuals so it is with whole generations. The comprehension of the artistically beautiful is not half so dependent upon great ...
— The German Classics of The Nineteenth and Twentieth Centuries, Vol. VIII • Various
... or not the spirit of Titian had instructed the little creature to keep me there, I cannot say, but the result was that I sat for a quarter of an hour before the altar without a movement, so that every particular of the painting is photographed on my retina. Six months later the same cat led me to a courtyard opposite the Sacristy door ...
— A Wanderer in Venice • E.V. Lucas
... the inner side of which is 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 the ...
— Special Report on Diseases of the Horse • United States Department of Agriculture
... the hour. Once in a hundred years a six months' carnival is allowable to so ponderous a body. Civilization here aims to see itself not simply as in a glass, but in a multitude of glasses. To steer its optics through the architectural muddle in the basin before us it will need the retina that lies behind ...
— Lippincott's Magazine of Popular Literature and Science, April, 1876. • Various
... is to be acquired by an operation of the mind directly opposite to what is necessary in delineating the sections of bodies; the mind must here be intent only upon the objects that are delineated upon the retina, exactly what we see; it must forget or suspend the knowledge which it has acquired from experience, and must see with the eye of childhood, no further than the surface. Every person, who is accustomed to drawing in perspective, sees external nature, when he pleases, merely as a picture: ...
— Practical Education, Volume II • Maria Edgeworth
... steadily at the corpse for some time, impressing a picture of it in every detail on his mental retina. Struck by an idea, he bent over and touched the patch of blood in the dead man's breast, then looked at his finger. There was no stain. The blood was quite congealed. Then he tried to unclench the judge's right hand, ...
— The Hampstead Mystery • John R. Watson
... temperature of the sun and of the electric spark, others again with electro-photometry and the chemistry of the electric arc. With Professor J. G. M'Kendrick, of Glasgow, he investigated the physiological action of light, and examined the changes which take place in the electrical condition of the retina under its influence. With Professor G. D. Liveing, one of his colleagues at Cambridge, he began in 1878 a long series of spectroscopic observations, the later of which were devoted to the spectroscopic examination of various gaseous ...
— Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 - "Destructors" to "Diameter" • Various
... so kind as to give me the following remarks on certain inherited imperfections. First, hypermetropia, or morbidly long sight: in this affection, the organ, instead of being spherical, is too flat from front to back, and is often altogether too small, so that the retina is brought too forward for the focus of the humours; consequently a convex glass is required for clear vision of near objects, and frequently even of distant ones. This state occurs congenitally, or at a very early age, often in several ...
— The Variation of Animals and Plants Under Domestication, Volume II (of 2) • Charles Darwin
... "The greatest of all the prejudices we have retained from our infancy is that of believing that the beasts think."[40] If the beasts can properly be said to see at all, "they see as we do when our mind is distracted and keenly applied elsewhere; the images of outward objects paint themselves on the retina, and possibly even the impressions made in the optic nerves determine our limbs to different movements, but we feel nothing of it all, and move as if we were automata."[41] The sentience of the animal to the lash of his tyrant is not other than the sensitivity of the plant to the influences ...
— Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 2 - "Demijohn" to "Destructor" • Various
... and shade effects on the toe of the boot. The afternoon sun, streaming in through the window, must have shone on the boot in such a manner as to give it a momentary and fictitious aspect of redness. If Mr. Downing recollects, he did not look long at the boot. The picture on the retina of the eye, consequently, had not time to fade. I remember thinking myself, at the moment, that the boot appeared to have a certain reddish ...
— Mike • P. G. Wodehouse
... becomes extended, so to speak, over an external surface, and defined into limited figures. We are not disposed to lay any greater stress than Dr Brown himself upon the image said to be traced upon the retina; but we say that the eye, as well as the touch, immediately informs us of ...
— Blackwood's Edinburgh Magazine, Volume 61, No. 379, May, 1847 • Various
... elaboration. Ralph Nickleby, Squeers, Smike, little Nell, Quilp, Barnaby Rudge, Steerforth, Paul Dombey, Lady Dedlock, Joe, each and all show how carefully they were elaborated; how distinctly they presented themselves to the retina of the mind of their distinguished creator. When this is borne in mind, it will be at once understood why the Mrs. Pipchin of Hablot Browne was not the Mrs. Pipchin with whose outward appearance and mental peculiarities the author himself ...
— English Caricaturists and Graphic Humourists of the Nineteenth Century. - How they Illustrated and Interpreted their Times. • Graham Everitt
... Law for the Heliotropic Reactions of Animals and Plants. X. The Effect of Rapid Changes in Intensity of Light. XI. The Relative Heliotropic Efficiency of Light of Different Wave Lengths. XII. Change in the Sense of Heliotropism. XIII. Geotropism. XIV. Forced Movements Caused by Moving Retina Images: Rheotropism: Anemotropism. XV. Stereotropism. XVI. Chemotropism. XVII. Thermotropism. XVIII. Instincts. XIX. Memory Images ...
— Manhood of Humanity. • Alfred Korzybski
... 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 ...
— Wonders of Creation • Anonymous
... blushes commenced by a small circumscribed spot on the cheeks, over the parotidean plexus of nerves, and then increased into a circle; between this blushing circle and the blush on the neck there was an evident line of demarcation, although both arose simultaneously. The retina, which is naturally red in the albino, invariably increased at the same time in redness. Every one must have noticed how easily after one blush fresh blushes chase each other over the face. Blushing is preceded by a peculiar sensation in the ...
— Introduction to the Science of Sociology • Robert E. Park
... 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 behind him ...
— The Free Range • Francis William Sullivan
... you'll keep it to yourself, Mr. Crane, I'll tell you something: My native country's scientists have developed a rather simple device, though they haven't published anything about it in the scientific journals. Let me give you a brief explanation: Light strikes the retina of the eye; the rods and cones pass on impulses to the bipolar cells, which send them on to the optic nerve, which goes ...
— They Twinkled Like Jewels • Philip Jose Farmer
... 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 ...
— Edgar Allan Poe's Complete Poetical Works • Edgar Allan Poe
... 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 which they are bringing ...
— The Origins of Contemporary France, Volume 1 (of 6) - The Ancient Regime • Hippolyte A. Taine
... the diver; "pierce into you like a gimblet, goin' slap agin the retina, turnin' short down the jugular, right into the heart, where they create an agreeable sort o' fermentation. Oh! Don't I know?—my Susan ...
— Under the Waves - Diving in Deep Waters • R M Ballantyne
... processes in the brain and are afterwards projected into P. There is not, however, an unextended image which forms itself in consciousness and then projects itself into the position P. Really, the point P, and the rays which it emits, together with the retina and nervous elements affected in the process of perception, all form a single whole. The point P is an indispensable factor in this whole and it is really in P and not anywhere else that the image of P is formed and perceived.[Footnote: Cf. Matter ...
— Bergson and His Philosophy • J. Alexander Gunn
... number, sat on a chair under his desk. Before recommencing she gazed boldly at the house, and certain placards—'Smoking permitted,' 'Emergency exit,' 'Ices,' and 'Fancy Dress Balls'—were fixed for ever on the retina of her eye. At the end of the second movement there was more applause, and the conductor tapped appreciation with his stick against the pillar of his desk; the leader of the listless orchestra also tapped ...
— Tales of the Five Towns • Arnold Bennett
... breeze, after lunch, which took us gently up past Wargrave and Shiplake. Mellowed in the drowsy sunlight of a summer's afternoon, Wargrave, nestling where the river bends, makes a sweet old picture as you pass it, and one that lingers long upon the retina of memory. ...
— Three Men in a Boa • Jerome K. Jerome
... optics, and physiological optics is the study of perception by means of the sense of sight. We see things in the external world through the medium of light which they direct upon our eyes. The light strikes the retina, and causes a sensation. The sensation brought to the brain by means of the optic nerve becomes the condition of the representation in consciousness of certain objects distributed in space.... We make use of the sensation which the light stimulates ...
— Robin Hood • J. Walker McSpadden
... other. In this manner of expression, we follow exactly the principles on which we started, and suit our language to our ideas and habits of thinking. By the law of optics things are reflected upon the retina of the eye inversely, that is, upside down; but they are always seen in a proper relation to each other, and if there is any thing wrong in the case, it is overcome by early habit; and so our language accords with things as they are manifested ...
— Lectures on Language - As Particularly Connected with English Grammar. • William S. Balch
... instant she had passed; and it took a little while for the blur of black and white that she had flashed upon his retina to clear into an image—which even then, from under-exposure, was obscure and piecemeal: a black riding-habit, of some flexile stuff, that fluttered in a multitude of pretty curves and folds; a small black hat, a toque, set upon a loosely-fastened mass of black hair; a ...
— Grey Roses • Henry Harland
... of the very best things the material presence is worthless save as first step to a spiritual existence within our soul. This is particularly the case with music. There is nothing in the realm of sound at all corresponding to the actual photographing of a visible object on the retina; our auditive apparatus, whatever its mysteries, gives no sign of being in any way of the nature of a phonograph. Moreover, one element of music is certainly due to the sense of locomotion, the rhythm; so that sound, to become ...
— Hortus Vitae - Essays on the Gardening of Life • Violet Paget, AKA Vernon Lee
... to the retina of the eye, the looking- glass of the brain, upside down, and it is by study that begins at birth, and is finished ere remembrance commences, that the child of God and man is able to detect the true relation of material things to himself. We have not yet learned ...
— Brook Farm • John Thomas Codman
... system of blood vessels on to a white screen merely by turning a strong light sideways into my eye. And the explanation of it was quite simple. The retinal vessels stand out slightly in relief, and thus a perfect shadow of the system is cast on the retina. It was this shadow I saw, and the white screen was merely a convenient background for it. I don't know ...
— Cleo The Magnificent - The Muse of the Real • Louis Zangwill
... to stare long enough at it to get the image of some distinct object imprinted upon your retina, then you need but stare again at some space of indistinct colouring and you will see the impression of your distinct object reprinted a ...
— Desert Love • Joan Conquest
... point with the centre of our eye we are most sensitive to slight 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 ...
— Psychology and Social Sanity • Hugo Muensterberg
... I mean to say—how are they going to be held fast by the optic apparatus? The lens, you understand. I want to be able to shove them into a sketch-book, like you fellows. Well, how? That's what I want to know. How to turn my retina into a canvas." ...
— South Wind • Norman Douglas
... chamber began to grow light, like very early morning. He could see nothing, but the retina of his eyes was affected. He fancied that he heard music, but while he was listening for it, it stopped. The light grew stronger, the air grew warmer; he heard the confused sound ...
— A Voyage to Arcturus • David Lindsay
... saw it not. At least it made no sensible impression on him. His mental retina was capable of receiving only two pictures: the concentrated accumulation of past sin—the terrible anticipation of future retribution. Between these two, present danger and suffering ...
— The Madman and the Pirate • R.M. Ballantyne
... 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 eye supplements its fellow by turns, instead of acting as a continuously ...
— Sir Jagadis Chunder Bose - His Life and Speeches • Sir Jagadis Chunder Bose
... 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 ...
— The Origin and Nature of Emotions • George W. Crile
... 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
... 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 ...
— Field and Hedgerow • Richard Jefferies
... circulatory process which, in its spasms of activity, gives rise to spots, produces in its regular course the singular "marbled" appearance, for the recording of which we are no longer at the mercy of the fugitive or delusive impressions of the human retina. And precisely this circulatory process it is which gives to our great luminary its permance as a sun, or warming ...
— A Popular History of Astronomy During the Nineteenth Century - Fourth Edition • Agnes M. (Agnes Mary) Clerke
... perceived, 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 ...
— Scientific American Supplement, No. 647, May 26, 1888 • Various
... second, myopia, or progressive shortsightedness, a 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 are usually the first ...
— Five Lectures on Blindness • Kate M. Foley
... 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 of even ...
— The Opium Habit • Horace B. Day
... of objects in motion, a picture truly drawn, truly coloured, and which is either very large to correct the divergence of light and convergence of visual axes, or if small, as viewed through a glass, would affect the retina exactly as the realities. But the desideratum still remained of being able to paint motion. Now this too has been recently accomplished, and in many cases with singular felicity, by making the picture transparent, and throwing lights and shadows upon it from behind. ...
— The Mirror of Literature, Amusement, and Instruction - Vol. 14, Issue 405, December 19, 1829 • Various
... his pipe, and turned to meet her gaze. Then, he realized that never in his life had he looked into human eyes that in cruelty, keenness, and suspicion equaled these. That glare went through the retina, into the brain, and down, down to the hidden and undiscoverable recess of the soul, plumbing, searching, proving. He began to feel as though he were looking at a dazzling light... Suddenly, the light was turned off, ...
— The Wilderness Trail • Frank Williams
... the air ahead of us was filled 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 ...
— The Killer • Stewart Edward White
... art[49] to manipulate a camel's hair pencil, than to manipulate a china tray and a glass vial. It is no more art to lay on color delicately, than to lay on acid delicately. It is no more art to use the cornea and retina for the reception of an image, than to use a lens and a piece of silvered paper. But the moment that inner part of the man, or rather that entire and only being of the man, of which cornea and retina, fingers and hands, ...
— The Stones of Venice, Volume III (of 3) • John Ruskin
... to the old man that night, and even long after his eyes were closed, the silver things seemed arrayed in line upon his mental retina. And when, after a long while, he fell into a troubled slumber, it was only to dream. And in his dream old Judge Robinson's mother-in-law seemed to come and stand before him—black dress, side curls, and all—and when he looked at her for the first time in his life ...
— Moriah's Mourning and Other Half-Hour Sketches • Ruth McEnery Stuart
... above the crater. Taking a last look, we "fell in" in Indian file, and got back to the house, with no further accident than a few bruises, about ten o'clock. The walk had required caution, and it was long after I had closed my eyes ere the retina yielded the impressions that had been so nervously drawn on them. The next morning at nine, we started on our return to the ship, sauntering leisurely along, picking strawberries by the way, and enjoying all the satisfaction inherent to the successful accomplishment of ...
— Blackwood's Edinburgh Magazine, Volume 62, Number 361, November, 1845. • Various
... in one 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 ...
— To Win or to Die - A Tale of the Klondike Gold Craze • George Manville Fenn
... five little grimy-faced boys on the bench before him, showing wide unblinking eyes turned up in coldly rational interrogative stares, with a figuratively bulging she-bear in the retina of each, and it ...
— A Circuit Rider's Wife • Corra Harris
... plain ordinary room in the barracks at Fort Bliss; but there wasn't a map or copy of 'rules and regulations' hanging on the yellowish white walls that I can't see now, whenever I shut my eyes. I guess they were all photographed on my 'mental retina,' as the writing folks say. The three officers were in full uniform, to do honour to the case, and of course there wasn't a man present dressed in 'cits.' All were army chaps, even to the headquarters clerk who took notes of the proceedings, the orderly who kept ...
— Secret History Revealed By Lady Peggy O'Malley • C. N. Williamson and A. M. Williamson
... she will. She 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, ...
— The Opinions of a Philosopher • Robert Grant
... miles from the sun to the earth, and then says that the sun after all is a pretty poor thing considered in connection with what other suns there are. When you find furthermore that some stars are so far distant that the light you are now receiving on your retina started from them centuries ago, you say to yourself: "Well, what's the use? If we are such atoms and so unimportant in the ...
— Ethics in Service • William Howard Taft
... have been a sermon-copyist, busy only towards Sunday. He may have been a loafer pure and simple. I say I don't know; but he was a landmark of the place, idiosyncratic enough to be stamped indelibly on at any rate one retina. ...
— Punch, or the London Charivari, Vol. 146, March 25, 1914 • Various
... arrangement so far described depicts things on the retina the unaccustomed way up. By using a concave glass instead of a convex, and placing it so as to prevent any image being formed, except on the retina ...
— Pioneers of Science • Oliver Lodge
... me in my description if you will endeavour to draw the following landscape on the retina of ...
— Hudson Bay • R.M. Ballantyne
... from the Sun, and light from the remote Stars, setting out upon its journey earth-ward from some, at the time the Chaldeans commenced to build the Tower of Babel? Or how the image of an external object comes to and fixes itself upon the retina of the eye; and when there, how that mere empty, unsubstantial image becomes transmuted into the wondrous thing that we call SIGHT? Or how the waves of the atmosphere striking upon the tympanum of ...
— Morals and Dogma of the Ancient and Accepted Scottish Rite of Freemasonry • Albert Pike
... and black boxes plied on the floor by his table—the desk, hat-case, umbrella, coats, rugs, and mufflers, all ready for a journey—reached my brain and suggested thought. The mise en scene had remained in every detail fixed upon my retina; and how I wondered—'When is he going—how soon? Is he going to carry me away and place me ...
— Uncle Silas - A Tale of Bartram-Haugh • J.S. Le Fanu
... anxiety amongst my companions. I shall have to mention several other instances of the wonderful quickness and accuracy with which Brown as well as Charley were able to recognize localities which they had previously seen. The impressions on their retina seem to be naturally more intense than on that of the European; and their recollections are remarkably exact, even to the most minute details. Trees peculiarly formed or grouped, broken branches, slight clevations of the ground—in fact, a hundred things, which ...
— Journal of an Overland Expedition in Australia • Ludwig Leichhardt
... 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. ...
— Scientific American Supplement No. 275 • Various
... in one of two ways—first, as a vivid picture affecting the focus and retina of the eye, perfect in its outline and colouring, and giving the impression of being either distant or near or at moderate range, Secondly, it may be conveyed as a vivid impression accompanied by a hazy and undefined formation in the crystal field. In this form it becomes an apperception ...
— How to Read the Crystal - or, Crystal and Seer • Sepharial
... well said, 'in every object there is inexhaustible meaning; the eye sees in it what the eye brings means of seeing.' To Newton and to Newton's Dog Diamond, what a different pair of Universes; while the painting on the optical retina of both was, most likely, the same! Let the Reader here, in this sick-room of Louis, endeavour to look with the ...
— The French Revolution • Thomas Carlyle
... 17), the apparent sizes of things vary as we move, and this means that the quantity of sensation, when I observe the apple from a nearer point, is greater. The man of science tells me that the image which the object looked at projects upon the retina of the eye grows larger as we approach objects. The thing, then, may remain unchanged; our sensations will vary according to the impression which is made upon ...
— An Introduction to Philosophy • George Stuart Fullerton
... 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. After them came Mr. Gladstone, with other members of the ...
— A Writer's Recollections (In Two Volumes), Volume I • Mrs. Humphry Ward
... a number of animals of the same species, in which the eye is not developed. They 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 ...
— Darwiniana - Essays and Reviews Pertaining to Darwinism • Asa Gray
... theory of color, white, red, and yellow are the so-called "dissimilating" colors in the three pairs, white-black, red-green, and yellow-blue, corresponding to three hypothetical visual substances in the retina. These substances, that is, in undergoing a kind of chemical disintegration under the action of light-rays, are supposed to give the sensations white, red, or yellow respectively, and in renewing themselves again to give the sensations of black, green, and blue. The dissimilating process seems ...
— The Psychology of Beauty • Ethel D. Puffer
... 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 next breath he summoned every generous power in his ...
— Atlantic Monthly Volume 6, No. 37, November, 1860 • Various
... addition to the imperfect eye of carefully fitted lenses or spectacles which will neutralize this mechanical defect. To put it very roughly, if the eye is too flat to bring the light-rays to a focus upon the retina, which is far the commonest condition (the well-known "long sight," or hyperopia), we put a plus or bulging glass before the eye and thus correct its shape. But if the eye is too round and bulging, producing the familiar "short sight," or myopia, ...
— Preventable Diseases • Woods Hutchinson
... 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 ...
— The New Physics and Its Evolution • Lucien Poincare
... 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, ...
— The Autocrat of the Breakfast-Table • Oliver Wendell Holmes, Sr. (The Physician and Poet not the Jurist)
... furnishes 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 is doubtful whether the degeneration and gradual ...
— Scientific American Supplement, No. 664, September 22,1888 • Various
... as you've got it down to shut your eyes, and open them very cautiously in a minute or so's time. One still sees. The sense of vision is a question of length of vibration, and not of multitude of impacts; but there's a kind of shock to the retina, a nasty giddy confusion just at the time, if the eyes are ...
— Twelve Stories and a Dream • H. G. Wells
... 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 vertebrate ancestors, when Eurypterus ...
— The Glands Regulating Personality • Louis Berman, M.D.
... likewise have lenses 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 see ...
— Common Science • Carleton W. Washburne
... 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 slowly before the eye. In ...
— Five of Maxwell's Papers • James Clerk Maxwell
... first I was as incapable as a swathed infant—stepping with limbs I could not see. I was weak and very hungry. I went and stared at nothing in my shaving-glass, at nothing save where an attenuated pigment still remained behind the retina of my eyes, fainter than mist. I had to hang on to the table and press my ...
— The Invisible Man • H. G. Wells
... sense of external life was brought into activity, and she projected on the paper before her groups of people, or groups of mountains, with a vividness that showed she had only to transfer them from the retina: they had no need of any additional processes. She made no remarks on society, or inferences from what she saw in the present to what had been in the past or might be in the future. It was simply a power of representation, unequalled in its ...
— Atlantic Monthly, Volume 12, No. 73, November, 1863 • Various
... is presented to the retina of the eye, the looking- glass of the brain, upside down, and it is by study that begins at birth, and is finished ere remembrance commences, that the child of God and man is able to detect the true relation of material things ...
— Brook Farm • John Thomas Codman
... physiological optics is the study of perception by means of the sense of sight. We see things in the external world through the medium of light which they direct upon our eyes. The light strikes the retina, and causes a sensation. The sensation brought to the brain by means of the optic nerve becomes the condition of the representation in consciousness of certain objects distributed in space.... We make use of the sensation which the ...
— Robin Hood • J. Walker McSpadden
... To these two painters is due the method of Pointillism, i.e. the division of tones, not only by touches, as in Monet's pictures, but by very small touches of equal size, causing the spheric shape to act equally upon the retina. The accumulation of these luminous points is carried out over the entire surface of the canvas without thick daubs of paint, and with regularity, whilst with Manet the paint is more or less dense. The ...
— The French Impressionists (1860-1900) • Camille Mauclair
... his efforts, forcing Pat's head back by sitting upon it. Pat twisted and writhed to throw him off. But the man stayed with him, and finally had him prone to earth again. Whereupon Pat experienced the chagrin of his first defeat. Yet he could see. Upon the retina of each eye danced a picture. It was that of his mistress, surrounded by open-mouthed spectators, outside the fence, gazing down upon him with seeming approval. This once, but only this once, he felt dislike ...
— Bred of the Desert - A Horse and a Romance • Marcus Horton
... just a plain ordinary room in the barracks at Fort Bliss; but there wasn't a map or copy of 'rules and regulations' hanging on the yellowish white walls that I can't see now, whenever I shut my eyes. I guess they were all photographed on my 'mental retina,' as the writing folks say. The three officers were in full uniform, to do honour to the case, and of course there wasn't a man present dressed in 'cits.' All were army chaps, even to the headquarters clerk who took ...
— Secret History Revealed By Lady Peggy O'Malley • C. N. Williamson and A. M. Williamson
... can, he argued, know the outer world, because our sense impressions are literally 'impressions' or stamps made by external objects upon our organs. To see, for instance, is to be struck by an infinitely tenuous stream of images, flowing from the object and directly impinging upon the retina. Such streams are flowing from all objects in every direction—an idea which seemed incredible until the modern discoveries about light, sound, and radiation. Thus there is direct contact with reality, and consequently knowledge. ...
— Five Stages of Greek Religion • Gilbert Murray
... the dog turned his head. No human tympanum in the room vibrated to my cry. No human retina was recipient of my anguish. What fine, unclassified senses had the highly-organized animal by which he should become aware of me? The dog turned his noble head—he was a St. Bernard, with the moral qualities of the breed well ...
— The Gates Between • Elizabeth Stuart Phelps
... nausea and qualms at the pit of 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 ...
— The Downfall • Emile Zola
... choice, which of the two), that gleams-in from the circumambient Eternity, and colours with its own hues our little islet of Time. The Understanding is indeed thy window, too clear thou canst not make it; but Fantasy is thy eye, with its colour-giving retina, healthy or diseased. Have not I myself known five-hundred living soldiers sabred into crows'-meat for a piece of glazed cotton, which they called their Flag; which, had you sold it at any market-cross, would ...
— Sartor Resartus, and On Heroes, Hero-Worship, and the Heroic in History • Thomas Carlyle
... flash of a gigantic lantern behind the dense masses of cloud lying piled along the western horizon, the light being so brilliant as to be quite dazzling after the Cimmerian darkness to which our eyes had become accustomed. But, despite the dazzling brilliancy of the sudden illumination, the retina of my eyes caught and retained the vision of three large proas broad on our starboard quarter, about two miles distant, situated precisely as Roberts had described them; and that this vision was no illusion ...
— The Cruise of the "Esmeralda" • Harry Collingwood
... 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 ...
— How To Do It • Edward Everett Hale
... cool. For he who has not something of the artist about him, who cannot paint beautiful landscapes in his head, will never see any outside. Beautiful nature, this most subjective of all works of art, which is painted on the retina of the eye instead of on wood or canvas, will differ every time according to the mental viewpoint of the onlooker; and as it is with individuals so it is with whole generations. The comprehension of the artistically beautiful is not half so dependent upon great cultural presuppositions as ...
— The German Classics of The Nineteenth and Twentieth Centuries, Vol. VIII • Various
... 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 appearance. So that in this, as in ...
— Darwiniana • Thomas Henry Huxley
... the stronger light of the day; like owls, and bats, and many quadrupeds, and flying insects. When the eye is inflamed, great light becomes eminently painful, owing to the increased irritative motions of the retina, and the consequent increased sensation. Thus when the eye is dazzled with sudden light, the pain is not owing to the motion of the iris; for it is the contraction of the iris, which relieves the pain from sudden light; but to the ...
— Zoonomia, Vol. II - Or, the Laws of Organic Life • Erasmus Darwin
... of his way of readjusting her vision. Lily, turning her eyes from him, found herself scanning her little world through his retina: it was as though the pink lamps had been shut off and the dusty daylight let in. She looked down the long table, studying its occupants one by one, from Gus Trenor, with his heavy carnivorous head sunk between his shoulders, as he preyed on a jellied plover, ...
— House of Mirth • Edith Wharton
... of the tent, he twists his eyes away so far, that, from the front, little else than their whites can be seen. But enough of the retina is uncovered to receive an impression from behind; this showing the mestizo tilting his cup, and spilling its contents ...
— The Death Shot - A Story Retold • Mayne Reid
... of 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 by ...
— Ralph Waldo Emerson • Oliver Wendell Holmes
... 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 ...
— A Practical Enquiry into the Philosophy of Education • James Gall
... 1.40 grain euphthalmine inserted, and examination of eye grounds showed no optic atrophy. The right eye ground (retina) was slightly higher in color than ...
— The Attempted Assassination of ex-President Theodore Roosevelt • Oliver Remey
... and did the work. [Footnote: A strange incident connected with Mr. Walsh's misfortune 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 sight I ...
— Successful Exploration Through the Interior of Australia • William John Wills
... woman never have I seen or heard of since, and but for her presence I could have explained the incident: called it, say, subjection of the mental powers to the domination of physical reflex action, and the man's presence could have been termed a false impression on the retina. ...
— The Book of Dreams and Ghosts • Andrew Lang
... the Sun, and light from the remote Stars, setting out upon its journey earth-ward from some, at the time the Chaldeans commenced to build the Tower of Babel? Or how the image of an external object comes to and fixes itself upon the retina of the eye; and when there, how that mere empty, unsubstantial image becomes transmuted into the wondrous thing that we call SIGHT? Or how the waves of the atmosphere striking upon the tympanum of the ear—those thin, invisible waves—produce the equally ...
— Morals and Dogma of the Ancient and Accepted Scottish Rite of Freemasonry • Albert Pike
... eye has 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, ...
— Sir William Herschel: His Life and Works • Edward Singleton Holden
... 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 ...
— Dick Leslie's Luck - A Story of Shipwreck and Adventure • Harry Collingwood
... that if the eyes are closed, no visual disturbances can be sensed, nevertheless, as a matter of fact the eye-lids are not wholly opaque. Sight may be obtained through them, as you may prove by closing your eyes and moving your fingers before them. The lids transmit light to the retina and it is quite likely that you are frequently awakened by a beam of light falling upon your closed eye-lids. For this reason, one who is inclined to be wakeful should shut out from the bed-room all avenues whereby light may enter ...
— How to Use Your Mind • Harry D. Kitson
... course, by the attraction of opaque bodies. From the first we derive the principles on which mirrors are constructed; to the second we are indebted for the power of the lenses, and the blessings of sight,—for the light acts upon the retina of the eye in the same manner as on the lens of a camera. The latter has no important ...
— The History and Practice of the Art of Photography • Henry H. Snelling
... a tumour composed of neuroglia. It is met with exclusively in the central nervous system, retina, and optic nerve. It is a slowly growing, soft, ill-defined tumour, which displaces the adjacent nerve centres and nerve tracts, and is liable to become the seat of haemorrhage and thus to give rise to pressure symptoms resembling apoplexy. The glioma of the retina tends to grow ...
— Manual of Surgery - Volume First: General Surgery. Sixth Edition. • Alexis Thomson and Alexander Miles
... ploughed by succeeding avalanches that have slipped from the huge upper snowfields above. In short, there is no insignificant line or mark that has not its memory or its indication of the strange phenomena of the upper world. True, the same picture is painted upon the retina of all classes of observers; and so Porson and a schoolboy and a peasant might receive the same physical impression from a set of black and white marks on the page of a Greek play; but to one they would be an incoherent conglomeration ...
— English Prose - A Series of Related Essays for the Discussion and Practice • Frederick William Roe (edit. and select.)
... other bodily powers which go to form technical skill,—more notably yet does the hand come in play with the painter. Here the material is little, the imagination mighty indeed, but less overwhelming than with poet and musician; but the technique, the God-given and labor-trained cunning of retina and wrist, how all-important! ...
— Lippincott's Magazine, December 1878 • Various
... to slight 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 ...
— Psychology and Social Sanity • Hugo Muensterberg
... well; and she planned a hundred vengeances. That is to say, her mind did not occupy itself with plots possible to make real; but rather it dabbled among those fragmentary visions that love to overlap and displace one another upon the changeful retina of the ...
— Gentle Julia • Booth Tarkington
... beneath the countless waves of sound. For the voice of the jungle is the voice of love, of hatred, of hope, of despair—and in the night-time, when the dominance of sense-activity shifts from eye to ear, from retina to nostril, it cries aloud its confidences to all the world. But the human mind is not equal to a true understanding of these; for in a tropical jungle the birds and the frogs, the beasts and the insects are sending out their messages so swiftly one upon the other, that the senses fail ...
— Edge of the Jungle • William Beebe
... corpse for some time, impressing a picture of it in every detail on his mental retina. Struck by an idea, he bent over and touched the patch of blood in the dead man's breast, then looked at his finger. There was no stain. The blood was quite congealed. Then he tried to unclench the judge's right hand, but ...
— The Hampstead Mystery • John R. Watson
... small pale patch been occupying a corner of my retina for the last half hour; it turns out to be ...
— The Lost Kafoozalum • Pauline Ashwell
... important 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) if it is a state of damnation. The first ...
— Appreciations and Criticisms of the Works of Charles Dickens • G. K. Chesterton
... eye-glass, which became the clear part of the eye, called the cornea. At the same time, the little sensitive spot at the bottom of the eye-pit spread out into the shape of the bottom of a cup, called the retina; and then the hollow of that cup between the retina and the cornea filled up with a clear, soft, animal jelly called the vitreous humor, and we have the eye as it is ...
— A Handbook of Health • Woods Hutchinson
... itself, even then, but slowly and imperfectly. But the 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 feeling and ...
— The Complete Works of Whittier - The Standard Library Edition with a linked Index • John Greenleaf Whittier
... "You ought to know that no respectable TK would lay a lift on a retina. I just squeezed off a couple of small arteries. He's back in ...
— Vigorish • Gordon Randall Garrett
... sunburn, I knew it was caused by the ultraviolet rays, the same as from the sun; and I knew that nothing but my light could produce those rays at night time. And as a physician I knew what I did not know as an inventor—the swift amblyopia that follows the impact of this light on the retina. As a physician, too, I can inform you that your country has not permanently blinded a single American seaman or officer. ...
— The Wreck of the Titan - or, Futility • Morgan Robertson
... and innervated from the pallial nerve-cords. They are termed according to their size, micraesthetes and megalaesthetes. In the common species of Chiton and many others of the family Chitonidae the megalaesthetes are developed into definite eyes, the most complicated of which have retina, pigment within the eye, cornea and crystalline lens (intra-pigmental eyes) (fig. 2). The eyes are arranged in rows running diagonally from the median anterior beak of each valve to its lateral borders There may be only one such row on either side, or many rows. In some species the total number ...
— Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 2 - "Chicago, University of" to "Chiton" • Various
... it by a tall yew hedge, was a bowling-green, containing just about as much ground as Corporal Trim wished for. So that as Trim uttered the words, "a rood and a half of ground, to do what they would with," this identical bowling-green instantly presented itself upon the retina of ...
— The World's Greatest Books, Vol VIII • Arthur Mee and J.A. Hammerton, Eds.
... for years on the retina of Knight's eye: the dead and brown stubble, the weeds among it, the distant belt of beeches shutting out the view of the house, the leaves of which were now red and ...
— A Pair of Blue Eyes • Thomas Hardy
... 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 ...
— The Channings • Mrs. Henry Wood
... fingers, it is utterly impossible to conceive that we have not two round objects under them; and, though light is undoubtedly a mere sensation arising in the brain, it is utterly impossible to conceive that it is not outside the retina. In the same way, he who touches anything with a rod, not only is irresistibly led to believe that the sensation of contact is at the end of the rod, but is utterly incapable of conceiving that this sensation is really in ...
— Hume - (English Men of Letters Series) • T.H. Huxley
... the little creature from further suffering. Then it happened. One of the lads, apparently startled, let off his gun. The charge struck a tree a few yards off, and the shot glanced. It did not strike him full. The face is only slightly peppered and the brain quite uninjured. But shots pierced the retina of each eye, and the ...
— The Rosary • Florence L. Barclay
... Michel Ardan offered a large field for physiological analysis. This astonishing man lived in a perpetual disposition to hyperbole, and had not yet passed the age of superlatives; objects depicted themselves on the retina of his eye with exaggerated dimensions; from thence an association of gigantic ideas; he saw everything on a large scale except ...
— The Moon-Voyage • Jules Verne
... aberration, which is due to the fact that the circumferential and central rays have not the same focus. The human eye labours under a similar defect, and from this, and other causes, it arises that when the naked light from fifty cells is looked at the blur of light upon the retina is sufficient to destroy the definition of the retinal image of the carbons. A long list of indictments might indeed be brought against the eye—its opacity, its want of symmetry, its lack of achromatism, its partial blindness. All these taken together caused Helmholt to say that, ...
— Six Lectures on Light - Delivered In The United States In 1872-1873 • John Tyndall
... parts at the points 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 action of moving away—this is heat pain; when the urinary ...
— The Origin and Nature of Emotions • George W. Crile
... be altogether a mistake. If matter were infinitely 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 ...
— Familiar Letters of Chemistry • Justus Liebig
... directly and intimately related is the nervous system. The sense organs themselves are merely modifications of the nerve ends together with certain mechanisms for enabling stimuli to act on the nerve ends. The eye is merely the optic nerve spread out to form the retina and modified in certain ways to make it sensitive to ether vibrations. In addition to this, there is, of course, the focusing mechanism of the eye. So for all the sense organs; they are, each of them, some sort of modification of nerve-endings ...
— The Science of Human Nature - A Psychology for Beginners • William Henry Pyle
... impressions on the retina proves that the effect of external influences on nerve-vesicles is not necessarily transitory. In this there is a correspondence to the duration, the emergence, the extinction, of impressions on photographic ...
— History of the Conflict Between Religion and Science • John William Draper
... 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 ...
— The Killer • Stewart Edward White
... away on a Commoner girl—he meant it. Flashed the picture on her mental retina of the little solemn oath to Louise. What he asked was impossible—for him and ...
— Orphans of the Storm • Henry MacMahon
... the substances found upon our planet, and shown how everything living and dead is put together from them. It is accomplishing wonders before us every day, such as Arabian story-tellers used to string together in their fables. It spreads the sensitive film on the artificial retina which looks upon us through the optician's lens for a few seconds, and fixes an image that will outlive its original. It questions the light of the sun, and detects the vaporized metals floating around ...
— Medical Essays • Oliver Wendell Holmes, Sr.
... object to object scarcely a suggestion of this blurred appearance can be detected. The phenomenon is striking, since, if the eye moves in the same direction as the train, it is certain that the images on the retina succeed one another even more rapidly than when the eye is at rest. A supposition which occurs to one at once as a possible explanation is that perchance during eye-movement the retinal stimulations ...
— Harvard Psychological Studies, Volume 1 • Various
... of the proprieties of which impressions, we may collect these short definitions of Colours: That Blue is an impression on the Retina of an oblique and confus'd pulse of light, whose weakest part precedes, and whose strongest follows. And, that Red is an impression on the Retina of an oblique and confus'd pulse of light, whose strongest part ...
— Micrographia • Robert Hooke
... the electric spark, others again with electro-photometry and the chemistry of the electric arc. With Professor J. G. M'Kendrick, of Glasgow, he investigated the physiological action of light, and examined the changes which take place in the electrical condition of the retina under its influence. With Professor G. D. Liveing, one of his colleagues at Cambridge, he began in 1878 a long series of spectroscopic observations, the later of which were devoted to the spectroscopic examination of various gaseous constituents separated from atmospheric air by the aid ...
— Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 - "Destructors" to "Diameter" • Various
... shortsightedness, a 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 ...
— Five Lectures on Blindness • Kate M. Foley
... bleak, distant unchartered world two ships lay wrecked and a lone man stared at a star hyacinth. Its brilliance burned into his retina ... and he knew that men could easily kill and kill ...
— The Star Hyacinths • James H. Schmitz
... 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 a ...
— Phantom Fortune, A Novel • M. E. Braddon
... look 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, ...
— A Strange Story, Complete • Edward Bulwer-Lytton
... the demands must be met by modifying the artificial illuminants which are available. Vision is accomplished entirely by the distinction of brightness and color. An image of any scene or any object is focused upon the retina as a miniature map in light, shade, and color. Although the distinction of brightness is a more important function in vision than the ability to distinguish colors, color-vision is far more important in daily life than is ordinarily appreciated. One may go through life color-blind without ...
— Artificial Light - Its Influence upon Civilization • M. Luckiesh
... and the highest emotions, by the certainty of expiation and the fullness of atoning equity, where virtue is victorious, vice is vanquished, and the ways of Allah are justified to man. They are a panorama which remains ken-speckle upon the mental retina. They form a phantasmagoria in which archangels and angels, devils and goblins, men of air, of fire, of water, naturally mingle with men of earth; where flying horses and talking fishes are utterly realistic; where King and Prince meet fisherman and pauper, lamia and cannibal; where citizen jostles ...
— Library of the World's Best Literature, Ancient and Modern, Vol. 7 • Various
... sweetness made the air a passionate delight; a luscious fruit dropped, with all its royal gloss, into the river beside her, and she could not put out a hand to catch it. She saw now all that passed, but no longer with any afterthoughts of reference to herself; so sights might slip across the retina of a dead man's eye; her identity seemed fading from her, as from some substance on the point of dissolution into the wide universe. She felt like one who, under an aesthetic influence, seems to himself careering through mid-air, conscious only of motion ...
— The Atlantic Monthly, Volume 16, No. 96, October 1865 • Various
... distance above the dense cloud which hung, a lurid canopy, above the crater. Taking a last look, we "fell in" in Indian file, and got back to the house, with no further accident than a few bruises, about ten o'clock. The walk had required caution, and it was long after I had closed my eyes ere the retina yielded the impressions that had been so nervously drawn on them. The next morning at nine, we started on our return to the ship, sauntering leisurely along, picking strawberries by the way, and enjoying all the satisfaction ...
— Blackwood's Edinburgh Magazine, Volume 62, Number 361, November, 1845. • Various
... explore the shelf, when 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. ...
— Starlight Ranch - and Other Stories of Army Life on the Frontier • Charles King
... 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
... I record my literary calamity as a warning to my sedentary brothers. When my eyes dwell on any object, or whenever they are closed, there appear on a bluish film a number of mathematical squares, which are the reflection of the fine network of the retina, succeeded by blotches which subside into printed characters, apparently forming distinct words, arranged in straight lines as in a printed book; the monosyllables are often legible. This is the process of a few seconds. It is remarkable that the usual power ...
— Literary Character of Men of Genius - Drawn from Their Own Feelings and Confessions • Isaac D'Israeli
... shadows upward over the eyes? If this be not so, another thing is certain: namely, that the eyes of the actors suffer from the light, so that the effective play of their glances is precluded. Coming from below, the light strikes the retina in places generally protected (except in sailors, who have to see the sun reflected in the water), and for this reason one observes hardly anything but a vulgar rolling of the eyes, either sideways ...
— Plays by August Strindberg, Second series • August Strindberg
... 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 emotion, might multiply these phantasms, moulding them into the likeness ...
— The Atlantic Monthly, Volume 20, No. 122, December, 1867 • Various
... incomparably faster than that of radiating or conducting away from the surface of the collision. In the eye of the observer a single impact of the atoms would cause an instantaneous flash, but if the impacts were repeated with sufficient rapidity they would produce a continuous impression upon his retina. To him then the surface of the metal would appear continuously incandescent and of constant luminous intensity, while in reality the light would be either intermittent or at least changing periodically in intensity. The metal piece would rise in temperature until equilibrium was attained—that ...
— Experiments with Alternate Currents of High Potential and High - Frequency • Nikola Tesla
... external shell. Its external face is related to the muscles and fatty cushion. It receives posteriorly, a little lower than its middle portion, the insertion of the optic nerve, which passes through the shell and spreads out to form a very thin membrane, the retina or ...
— Common Diseases of Farm Animals • R. A. Craig, D. V. M.
... 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
... loose the usual assortment of sounds, it seemed as though the roadway below boiled over. Horses reared, plunged and stampeded, while high above the head of a long-tailed chestnut a countryman floated forth into space, a vision, in its brief perfectness, delightfully photographed on the retina. ...
— All on the Irish Shore - Irish Sketches • E. Somerville and Martin Ross
... Dr. L. T. Troland of Harvard tells us, "are built up on the same principle as the ordinary 'half-tone' engravings; that is, they are made up of minute dottings or stripplings far too small to be detected by the eye. . . . The sensitiveness of the retina is so great that a visual sensation can be produced by relatively few Quanta of the right kind of light." Through a master's divine knowledge of light phenomena, he can instantly project into perceptible manifestation the ubiquitous ...
— Autobiography of a YOGI • Paramhansa Yogananda
... acts on a plant and its degree of curvature; it was indeed hardly possible to perceive any difference in the curvature of some seedlings of Phalaris exposed to a light, which, though dim, was very much brighter than that to which others had been exposed. The retina, after being stimulated by a bright light, feels the effect for some time; and Phalaris continued to bend for nearly half an hour towards the side which had been illuminated. The retina cannot perceive a dim light after it has been exposed to a bright one; ...
— The Power of Movement in Plants • Charles Darwin
... termed corpuscles. In the work just referred to regarding this matter, he asks the question, "Are not rays of light very small bodies emitted from shining substances?" These small particles or corpuscles were supposed by him to actually strike the retina of the eye, and so produce the sensation of Sight, in the same way that odorous particles entering the nostril, come into contact with the olfactory nerves and produce the sensation of Smell. In order, however, to account for certain phenomena of light, he was compelled to postulate ...
— Aether and Gravitation • William George Hooper
... with other colors, is different from the same color seen by itself. It has a distinct and peculiar power upon the retina dependent on its association. Consequently, the color of any object is not more dependent upon the nature of the object itself, and the eye beholding it, than on the color of the objects near it; in this respect also, therefore, it is ...
— Modern Painters Volume I (of V) • John Ruskin
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