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Optics   /ˈɑptɪks/   Listen
Optics

noun
1.
The branch of physics that studies the physical properties of light.
2.
Optical properties.



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"Optics" Quotes from Famous Books



... listening to the discourse of "his ancient," or regaling him "with sweet converse"; and thus they onward jog, until the sign of the "Greyhound," stretching quite across the main street, greets their expectant optics, and seems to forbid their passing the open portal below. In they wend then, and having seen their horses "sorted," and the collar marks (as much as may be) carefully effaced by the shrewd application of a due quantity of grease and lamp-black, ...
— Jorrocks' Jaunts and Jollities • Robert Smith Surtees

... starving—that old rascal, perhaps, in his capacity as a magistrate, sentences to jail an unfortunate man whom hunger has driven into the "crime" of stealing a loaf of bread! Bah! ladies and gentlemen, take the beams out of your own eyes before you allude to the motes in the optics of your fellow beings. That's ...
— My Life: or the Adventures of Geo. Thompson - Being the Auto-Biography of an Author. Written by Himself. • George Thompson

... goes beyond the eye, and one has to depend upon the feel; and when one has once learned what a delicate affair touch is, one gets a horror of all coarse work, and is ready to forgive any amount of feebleness, sooner than that boldness which is akin to impudence. In optics the distinction is easily seen when the work is put to trial; but here too, as in drawing, it requires an educated eye to tell the difference when the work is only moderately bad; but with "bold" work, nothing can be seen but distortion ...
— The Two Paths • John Ruskin

... noblemen's seats, what do you find there, I ask? Cards, comedies, music, the opportunity for an agreeable intrigue in the society of your equals? No—but a hostess engaged in suckling and bathing her brats, or in studying chemistry and optics with some dirty school-master, who is given the seat of honour at table and a pavilion in the park to which he may retire when weary of the homage of the great; while as for the host, he is busy discussing education or political ...
— The Valley of Decision • Edith Wharton

... south than the Tibboos, some fifteen or twenty days' journey. From the town of Ghat to the base of this range is half a day, eastward, although the range looks, by the ordinary delusion of Desert optics, to ...
— Travels in the Great Desert of Sahara, in the Years of 1845 and 1846 • James Richardson

... of the New Learning mentioned at the beginning of this chapter. It is a statement made by Roger Bacon, the greatest of Oxonian scholars of the thirteenth century, who, long before the Renascence, did much to restore the study of science, especially in geography, chronology, and optics. In his Opus ...
— The Story of Extinct Civilizations of the West • Robert E. Anderson

... round and round, looking for her needle, which, strange to say, she could not find; she opened her snuff-box, and took a pinch to clear her optics. "Deary me, why, what's the matter with my snuff? and where can that needle be? Child, come and look for the needle; don't be ...
— Percival Keene • Frederick Marryat

... thereof, beloved," said Bothwell, in the same tone of raillery, "will be, firstly, that I will tweak thy proboscis or nose. Secondly, beloved, that I will administer my fist to thy distorted visual optics; and will conclude, beloved, with a practical application of the flat of my sword to the shoulders of ...
— Old Mortality, Complete, Illustrated • Sir Walter Scott

... abstained rigorously, at times, from all but purely vegetable food, and from all drinks but water; and it is also stated that some of his important labors were performed at these seasons of strict temperance. While writing his treatise on Optics, it is said he confined himself entirely to bread, with a little sack and water; and I have no doubt that his remarkable equanimity of temper, and that government of his animal appetites, throughout, for which he was so distinguished to the last hour of his life, were owing, in no small ...
— Vegetable Diet: As Sanctioned by Medical Men, and by Experience in All Ages • William Andrus Alcott

... style was the work of a follower, Agatharchos of Samos (fl. end of fifth century B.C.). He was a scene-painter, and by the necessities of his craft was led toward nature. Stage effect required a study of perspective, variation of light, and a knowledge of the laws of optics. The slight outline drawing of his predecessor was probably superseded by effective masses to create illusion. This was a distinct advance toward nature. Apollodorus (fl. end of fifth century B.C.) applied the principles ...
— A Text-Book of the History of Painting • John C. Van Dyke

... comes from a good fam'ly, like you-all,' says Old Man Enright to Dan, sort o' soothin' of him, 'oughter be removed above makin' comments on pore old Cape shiftin' his optics. Troo! it's a weakness, but where is the sport who hasn't weaknesses likewise. Which you-all is a mighty sight to one side of bein' perfect yourse'f, Dan, an' yet we don't go 'round breakin' the information ...
— Wolfville Days • Alfred Henry Lewis

... TRUTH.—The thought grows deeper as we advance. Obedience to the Way conducts to the vision of the Truth; ethics to spiritual optics. The truth-seeker must first submit himself in all humility and obedience to Christ; and when he is willing to do His will, he ...
— Love to the Uttermost - Expositions of John XIII.-XXI. • F. B. Meyer

... answer to your care. In the first place, I cannot address the answer to him, because the epistle is without date or direction; and in the next, the contents are so singular that I can scarce believe my optics, "which are made the fools of the other senses, or else worth ...
— The Works Of Lord Byron, Letters and Journals, Vol. 1 • Lord Byron, Edited by Rowland E. Prothero

... articles were from the pen of the editor. At a later period he was one of the leading contributors to the Encyclopaedia Britannica (seventh and eighth editions), the articles on Electricity, Hydrodynamics, Magnetism, Microscope, Optics, Stereoscope, Voltaic Electricity, &c., being from his pen. In 1819 Brewster undertook further editorial work by establishing, in conjunction with Robert Jameson (1774-1854), the Edinburgh Philosophical Journal, which took the place of the Edinburgh Magazine. The ...
— Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 - "Brescia" to "Bulgaria" • Various

... if you can understand what I mean, and at the same time, in their shifting shades of blue, green, and a nameless sort of dark grey, there was a sinister light in them that lent to the whole face an aspect almost alarming. Moreover, they were the most luminous optics I think I have ever seen in ...
— The Empty House And Other Ghost Stories • Algernon Blackwood

... wont to gaze at it. There she beheld another countenance, of a man well stricken in years, a pale, thin, scholar-like visage, with eyes dim and bleared by the lamplight that had served them to pore over many ponderous books. Yet those same bleared optics had a strange, penetrating power, when it was their owner's purpose to read the human soul. This figure of the study and the cloister, as Hester Prynne's womanly fancy failed not to recall, was slightly deformed, with the left shoulder a trifle higher than the right. Next rose before her, in memory's ...
— The Scarlet Letter • Nathaniel Hawthorne

... navigable as yet by the human understanding, yet here and there to be coasted,—I wish at this point to direct the reader's attention upon a passage which he may happen to remember in Sir Isaac Newton: the passage occurs at the end of the 'Optics;' and the exact expressions I do not remember; but the sense is what I am going to state: Sir Isaac is speaking of God; and he takes occasion to say, that God is not good, but goodness; is not holy, but holiness; is not infinite, but infinity. This, I apprehend, will have struck many ...
— Theological Essays and Other Papers v1 • Thomas de Quincey

... optics teach, unfold Thy form to please me so, As when I dreamt of gems and gold Hid ...
— Journeys Through Bookland, Vol. 6 • Charles H. Sylvester

... it appears, instead of being flattened, is elongated at the poles: by ignorance of which the loss above mentioned occurs yearly. There is, or is to be, a substitute for attraction and an "application hitherto neglected, of a {138} recognized law of optics to the astronomical theory, showing the true orbits of the heavenly bodies to be perfectly circular, and their orbital motions to be perfectly uniform." all irregularities being, I suppose, optical delusions. Mr. Von Gumpach is a learned man; ...
— A Budget of Paradoxes, Volume II (of II) • Augustus de Morgan

... to-morrow I am off to Fulham, to be introduced to my aunt. Can't you fancy her?—grey gros-de-Naples gown: gold chain with an eyeglass; rather fat; two pugs, and a parrot! 'Start not, this is fancy's sketch!' I have not yet seen the respectable relative with my physical optics. What shall we have for dinner? Let me choose, you were always a bad caterer." As Ferrers thus rattled on, Maltravers felt himself growing younger: old times and old adventures crowded fast upon him; and the two friends spent a most agreeable ...
— Ernest Maltravers, Complete • Edward Bulwer-Lytton

... development of Descartes' system of thought preceded the metaphysical. His great achievements in analytical geometry, in optics, in physical research, his explanation of the laws of nature, and their application in his theory of the material universe, belong to the history of science. Algebra and geometry led him towards his method in metaphysical speculation. How do all primary truths ...
— A History of French Literature - Short Histories of the Literatures of the World: II. • Edward Dowden

... "either good or bad, but thinking makes it so." At every change of the mind's colored optics the scene before it changes also. I have sometimes contemplated the vast metropolis of England—or rather of the world—multitudinous and mighty LONDON—with the pride and hope and exultation, not of a patriot only, but of a cosmopolite—a man. Its grand national structures that seem ...
— Flowers and Flower-Gardens • David Lester Richardson

... and some more modern authors, has shown that the inference is a very strong presumption. Again, it is easy to over-value such complex instruments as we possess. The possessor of an up-to-date camera, well instructed in the function and manipulation of every part, but ignorant of all optics save a hand-to-mouth knowledge of the properties of his own lens, might say that a priori no picture could be taken with a cigar-box perforated by a pin-hole; and our ignorance of the mechanism of the Psychology ...
— Unconscious Memory • Samuel Butler

... ten minutes, during which I, by this time in perfect possession of my wits, observed all the female Brocklehursts produce their pocket-handkerchiefs and apply them to their optics, while the elderly lady swayed herself to and fro, and the two younger ones whispered, "How shocking!" ...
— Jane Eyre - an Autobiography • Charlotte Bronte

... according to simple necessities, he could not select, make, and use, with certainty, any tool, from the club with which he defends himself against his enemies or cracks the shells of fruit, up to the finest instruments of optics and chemistry, and even to the telegraph and steam engine. The conformity to law, with which the forces of nature act, far from being an impediment to his appointing and reaching his ends is much more the indispensable means by ...
— The Theories of Darwin and Their Relation to Philosophy, Religion, and Morality • Rudolf Schmid

... (1773-1829), physician and physicist, sometimes called the founder of physiological optics. He seems to have initiated the theory of color blindness that was later developed by Helmholtz. The attack referred to was because of his connection with the Board of Longitude, he having been made (1818) superintendent of the ...
— A Budget of Paradoxes, Volume I (of II) • Augustus De Morgan

... defences. Of course for FREMANTLE to dumfog HEWETT, (And show a world of watchers how to do it) Is first-rate practice; an eye-opener verily; Only I fancy I should laugh more merrily, If my eyes were the only optics gazing, Upon a feat that's no doubt most amazing; The Thames' mouth occupied by a fine fleet! The sight—as the fleet's mine—of course is sweet, But there's one thought that rather makes me blench:— Supposing ...
— Punch, or the London Charivari, Volume 93, August 13, 1887 • Various

... students than the originals, and which were sometimes used in place of them. Among mathematical works of this century were the Algorismus (Arithmetic) and the Libellus de Sphaera (On the Sphere) by John Holywood (Sacrobosco); and the Perspectiva Communis, i.e. Optics, by John (Peckham) of Pisa. A treatise on Music by John de Muris of Paris was produced in the early part of the fourteenth century. All of these were well-known university text-books. They appear ...
— Readings in the History of Education - Mediaeval Universities • Arthur O. Norton

... that the doctor had disappeared. Apparently when on the very verge of announcing his discovery he had been swallowed by the very force that he had loosened. There was nothing in known science outside of optics, that could in any way be blended with the Blind Spot. There were but two solutions; either the professor had been a victim of a clever rogue, or he had been overcome by the rashness of his own wisdom. At any rate, it was known from that minute on ...
— The Blind Spot • Austin Hall and Homer Eon Flint

... am not of opinion with some wise men, that the existence of objects depends on idea, yet I am convinced that their appearance is not a little influenced by it. The optics of some minds are in so unlucky a perspective as to throw a certain shade on every picture that is presented to them, while those of others (of which number was Harley), like the mirrors of the ladies, ...
— The Man of Feeling • Henry Mackenzie

... works badly. Now let us abolish it altogether and make a better one." But in doing so he begs the whole question at issue. The point is, can we make a better one or must we be content with patching up the old one? Take an illustration. Scientists tell us that from the point of view of optics the human eye is a clumsy instrument poorly contrived for its work. A certain great authority once said that if he had made it he would have been ashamed of it. This may be true. But the eye unfortunately is all we have to see by. If we destroy ...
— The Unsolved Riddle of Social Justice • Stephen Leacock

... a thing is to discover how it operates. The eternal forms of things are laws of natural action. Such are the law of gravitation, the laws of optics or of chemical combination. A static picture unless so interpreted must be at once ...
— Essays Towards a Theory of Knowledge • Alexander Philip

... eminent professors of our Faculty of Medicine, has recently published two pamphlets full of interest relating to the archaeology of that science—[Greek: Melitai peri ten optiken ton archaion] (Studies on the Optics of the Ancients); and another small work in French, "Encore deux mots sur l'extraction de ...
— The Contemporary Review, Volume 36, September 1879 • Various

... bridge and stood, hands clasped behind his back, staring blankly out at blackness and the scattered stars. "I know there is a ship out there, and I know that a ship simply can't be invisible, not to radar and optics." ...
— A Matter of Magnitude • Al Sevcik

... table some discordant dish, [59] Should shock our optics, such as frogs for fish; As oil in lieu of butter men decry, And poppies please not in a modern pie; [lxxxiii] 630 If all such mixtures then be half a crime, We must have Excellence to relish rhyme. Mere roast and boiled no Epicure ...
— Byron's Poetical Works, Vol. 1 • Byron

... him. On the contrary, his passion for learning seemed to increase with the diminution of the time available for its gratification. He studied Italian, Greek, mathematics; Maclaurin's Fluxions served to "unbend his mind"; Smith's Harmonics and Optics and Ferguson's Astronomy were the nightly companions of his pillow. What he read stimulated without satisfying his intellect. He desired not only to know, but to discover. In 1772 he hired a small telescope, and through it caught a preliminary ...
— A Popular History of Astronomy During the Nineteenth Century - Fourth Edition • Agnes M. (Agnes Mary) Clerke

... mathematics. When, in the course of time, I took up astronomy, I determined to accept nothing on faith, but to see with my own eyes everything which others had seen before me. Having already some knowledge of the science of optics, I resolved to manufacture my own telescopes, and after many continuous, determined trials, I finally succeeded in completing a so-called Newtonian instrument, seven feet in length. From this I advanced to one ...
— Sir William Herschel: His Life and Works • Edward Singleton Holden

... reason, no doubt, besides his hatred of the Church, lay at the bottom of Condorcet's tolerance or more towards Mahometanism. The Arabian superstition was not fatal to knowledge, Arabian activity in algebra, chemistry, optics, and astronomy, atoned in Condorcet's eyes for ...
— Critical Miscellanies (Vol. 2 of 3) - Essay 3: Condorcet • John Morley

... and look at its skin; is it not white? What is the blackness then which envelops it but a shade, which ought not to determine the raven's color? That blackness is merely a shade. I appeal to the skilful in the science of optics, who will tell you, that if you pound a black stone or glass into fine powder, you will see that the powder is white." But the legate replied, "Does not the raven appear black to the sight?" The confirmator answered, "Will you, who are a man, ...
— The Delights of Wisdom Pertaining to Conjugial Love • Emanuel Swedenborg

... And with the other he his launce besped; And then felle bleedyng on the bloudie plaine. His launce it hytte Fitz Broque upon the hede; Upon his hede it made a wounde full slyghte, 405 But peerc'd his shoulder, ghastlie wounde inferne, Before his optics daunced a shade of nyghte, Whyche soone were closed ynn a sleepe eterne. The noble erlie than, withote a grone, Took flyghte, to fynde ...
— The Rowley Poems • Thomas Chatterton

... that field. Maxwell,[30] in his introduction to a paper on "The Dynamical Theory of the Electro-magnet Field," writes on the matter thus: "It appears therefore that certain phenomena in electricity and magnetism lead to the same conclusion as those of optics, namely, that there is an aetherial medium pervading all bodies and modified only in degree by their presence; that the parts of this medium are capable of being set in motion by electric currents and magnets; that this motion is communicated from one part of the medium to another ...
— Aether and Gravitation • William George Hooper

... Aristotle's De Anima. The anatomy of the eye is next described; this is done well and evidently at first hand, though the functions of the parts are not given with complete accuracy. Many other points of physiological optics are touched on, in general erroneously. Bacon then discusses vision in a right line, the laws of reflection and refraction, and the construction of mirrors and lenses. In this part of the work, as in the preceding, his reasoning depends essentially upon his peculiar view of natural ...
— Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 - "Austria, Lower" to "Bacon" • Various

... [Endnote BB] deluded long By Fancy's dazzling optics, these behold The images of some peculiar things With brighter hues resplendent, and portray'd With features nobler far than e'er adorn'd Their genuine objects. Hence the fever'd heart Pants with delirious hope for tinsel charms; Hence oft obtrusive on the eye of scorn, Untimely zeal her witless ...
— Poetical Works of Akenside - [Edited by George Gilfillan] • Mark Akenside

... organization of our senses. This is the fundamental law of perception, of modern psychology, variously expressed, but axiomatic in all physiological psychology.''[1] In this direction Helmholtz[2] has done pioneer work. He treats particularly the problem of 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 ...
— Robin Hood • J. Walker McSpadden

... enough to discern Mrs. Dyer from the other comely gentlewoman who lives up at staircase No. 5; or, if you should make a blunder in the twilight, Mrs. Dyer has too much good sense to be jealous for a mere effect of imperfect optics. But don't try to write the Lord's Prayer, Creed, and Ten Commandments, in the compass of a halfpenny; nor run after a midge or a mote to catch it; and leave off hunting for needles in bushels of hay, for all these things strain the eyes. The snow is six feet deep in ...
— The Works of Charles and Mary Lamb (Vol. 6) - Letters 1821-1842 • Charles and Mary Lamb

... But the curious investigator of ancient times, and the genuine lover of British biography, will seize upon the more prominent features in the life of this renowned philosopher; will reckon up his great discoveries in optics and physics; and will fancy, upon looking at the above picture of his study, that an explosion from gun-powder (of which our philosopher has been thought the inventor) has protruded the palings which are leaning against its sides. Bacon's "Opus Majus," which happened to meet the ...
— Bibliomania; or Book-Madness - A Bibliographical Romance • Thomas Frognall Dibdin

... influence which this Treatise has exercised in the development of the Science of Optics, it seems strange that two centuries should have passed before an English edition of the work appeared. Perhaps the circumstance is due to the mistaken zeal with which formerly everything that conflicted with the cherished ideas of Newton was denounced by ...
— Treatise on Light • Christiaan Huygens

... creating light not only involves the Divine Conception of the thing, and the marvellous method of its production,[1] but doubtless, also, all those wonderful laws of reflection, refraction, polarization, and a thousand others, which the science of Physical Optics investigates. ...
— Creation and Its Records • B.H. Baden-Powell

... the letter proportionately more extended or condensed, and lighter or heavier in face, than the pattern. All these variations are necessary for the production of a properly graded modern series containing the usual sizes. In fact, on account of the laws of optics, which cannot be gone into here, only one size of a series is cut in absolutely exact proportion ...
— The Building of a Book • Various

... telephones are long; local service outside Minsk is neglected and poor; intercity - Belarus has a partly developed fiber-optic backbone system presently serving at least 13 major cities (1998); Belarus's fiber optics form synchronous digital hierarchy rings through other countries' systems; an inadequate analog system remains operational international: Belarus is a member of the Trans-European Line (TEL), Trans-Asia-Europe Fiber-Optic Line ...
— The 2000 CIA World Factbook • United States. Central Intelligence Agency.

... the man addressed. "Our science of optics is still very defective, and though our ...
— In the Year 2889 • Jules Verne and Michel Verne

... rocks, they would run away as in a terrible fright; but if they were feeding in the valleys, and I was upon the rocks, they took no notice of me; from whence I concluded, that by the position of their optics, their sight was so directed downward, that they did not readily see objects that were above them: so, afterwards, I took this method—I always climbed the rocks first, to get above them, and then had frequently ...
— The Life and Adventures of Robinson Crusoe Of York, Mariner, Vol. 1 • Daniel Defoe

... universally allowed by the writers on optics, that the eye at all times sees an equal number of physical points, and that a man on the top of a mountain has no larger an image presented to his senses, than when he is cooped up in the narrowest court or chamber. ...
— A Treatise of Human Nature • David Hume

... Cambridge, and in 1662 the Gresham Professorship of Geometry, which he resigned on being appointed first Lucasian Professor of Mathematics in the same university. During his tenure of this chair he pub. two mathematical works of great learning and elegance, the first on Geometry and the second on Optics. In 1669 he resigned in favour of his pupil, Isaac Newton, who was long considered his only superior among English mathematicians. About this time also he composed his Expositions of the Creed, The Lord's Prayer, Decalogue, and Sacraments. He was made a D.D. by royal mandate ...
— A Short Biographical Dictionary of English Literature • John W. Cousin

... old friends, whom distance cannot diminish, figuring up in the air (so they appear to our optics), yet on terra firma still—for so we must in courtesy interpret that speck of deeper blue, which the decorous artist, to prevent absurdity, had made to spring ...
— English Prose - A Series of Related Essays for the Discussion and Practice • Frederick William Roe (edit. and select.)

... Panton, "only this is not a good time for studying optics. What we want is knowledge that shall bring us to the brig without being shot ...
— Fire Island - Being the Adventures of Uncertain Naturalists in an Unknown Track • G. Manville Fenn

... may wish well to the world, and struggle for its good, on some other plan than precisely that which you have laid down? And will you cast off a friend for no unworthiness, but merely because he stands upon his right as an individual being, and looks at matters through his own optics, instead of yours?" ...
— The Blithedale Romance • Nathaniel Hawthorne

... the ordinary principles of optics on the part of the reader is assumed, for there are plenty of books on the theory of lenses, and, in any case, it is my intention to treat of the art rather than of the science of the subject. By far the best short statement of the principles involved which I have seen is Lord ...
— On Laboratory Arts • Richard Threlfall

... light, and both men hastened to examine the prisoner's hand. After a single glance their eyes met and each set of optics inquired ...
— Romance of California Life • John Habberton

... north to the branch library to turn in his book on which a six-cent fine impended. With the yellow card in his hand, he went over to the fiction section of the open shelves. No more Hentys, no more Optics. He was in love, and love stories he ...
— A Son of the City - A Story of Boy Life • Herman Gastrell Seely

... lay down their ploughs and work; and fly into red fury of confused war against the best-conditioned of Kings! Try if you can find that true. Scepticism writing about Belief may have great gifts; but it is really ultra vires there. It is Blindness laying-down the Laws of Optics.— ...
— The Great Events by Famous Historians, Volume 11 • Various

... faculty of looking two ways at once, like Brahma; and my optics were irresistibly drawn in an ...
— Inez - A Tale of the Alamo • Augusta J. Evans

... the president. "I should not like to state that of itself mere paralysis need incapacitate a professor. Dr. Thrum, our professor of the theory of music, is, as you know, paralysed in his ears, and Mr. Slant, our professor of optics, is paralysed in his right eye. But this is a case of paralysis of the brain. I fear it is incompatible with ...
— Arcadian Adventures with the Idle Rich • Stephen Leacock

... pressures, wind force and direction, atmospheric electricity, sunshine when the sun did shine, and the elements of terrestrial magnetism. Thanks to Simpson, we also had investigations of the upper air currents, aurora observations, atmospheric optics, gravity determination and what is more, some fine practical teaching that enabled the various sledging units properly to observe and collect data of meteorological importance. Simpson's place was essentially at the base station; ...
— South with Scott • Edward R. G. R. Evans

... Electro-optics. The branch of natural science treating of the relations between light and electricity. Both are supposed to be phenomena of or due to the luminiferous ether. To it may be referred ...
— The Standard Electrical Dictionary - A Popular Dictionary of Words and Terms Used in the Practice - of Electrical Engineering • T. O'Conor Slone

... to any other than the redoubted Colonel de Hamal. What a very finished, highly polished little pate it was! What a figure, so trim and natty! What womanish feet and hands! How daintily he held a glass to one of his optics! with what admiration he gazed upon the Cleopatra! and then, how engagingly he tittered and whispered a friend at his elbow! Oh, the man of sense! Oh, the refined gentleman of superior taste and tact! I observed him for about ten minutes, and perceived that he was exceedingly taken with ...
— Villette • Charlotte Bronte

... ABERRATION (in Optics).—In the refraction of light by a convex lens the rays passing through different parts of the lens are brought to a focus at slightly different distances—this is called SPHERICAL ABERRATION; at the same time the coloured rays are separated by the prismatic ...
— On the Origin of Species - 6th Edition • Charles Darwin

... forgotten, or to be remembered only when an old governor was recalled, or a new creature of office sent out. Those great provinces had been in the especial department of the Secretary of State, assisted by the Board of Trade. That secretary had been the Duke of Newcastle, a man whose optics seem never to have reached beyond Whitehall. It would scarcely be credited, what reams of papers, representations, memorials, and petitions from that quarter of the world lay mouldering and unopened in his office. He even knew as little of the geography ...
— Blackwood's Edinburgh Magazine, No. CCCLXXVI. February, 1847. Vol. LXI. • Various

... very rare accomplishments; and is pronounced by Roger Bacon, a very competent judge, of whom we shall presently have occasion to speak, to have spent much of his time, for nearly forty years, in the study of geometry, astronomy, optics, and other branches of mathematical learning, in all of which he much excelled. So that, as we are informed from the same authority, this same Robert of Lincoln, and his friend, Friar Adam de Marisco, were the two most learned men in the world, and excelled ...
— Lives of the Necromancers • William Godwin

... "white magic," bringing into service the laws of nature—the precursor of applied science. His book on meteorology was the first in which sound ideas were broached on this subject; his researches in optics gave the world the camera obscura, and possibly the telescope; in chemistry he seems to have been the first to show how to reduce the metallic oxides, and thus to have laid the foundation of several important industries. ...
— History of the Warfare of Science with Theology in Christendom • Andrew Dickson White

... peculiarly important. By this I mean, a general knowledge of the mathematics, of mechanics, optics, hydrostatics, astronomy, chemistry, botany, and the like. The teaching of these should be accompanied by experiments. Experimental philosophy, as I observed before, is peculiarly interesting to youth. Such ...
— A Portraiture of Quakerism, Volume III (of 3) • Thomas Clarkson

... drift of the art itself is something totally distinct from that of the physical science to which it is related; and it is not more absurd to say that physiology or anatomy constitute the science of poetry or dramatic art than that acoustics and harmonics are the science of music; optics, of painting; mechanics, or other branches of physical science, ...
— The Mind of the Artist - Thoughts and Sayings of Painters and Sculptors on Their Art • Various

... the technical term 'virtual memory', prob. from the term 'virtual image' in optics] 1. Common alternative to {logical}; often used to refer to the artificial objects (like addressable virtual memory larger than physical memory) simulated by a computer system as a convenient way to manage access to shared resources. 2. Simulated; performing ...
— The Jargon File, Version 4.0.0

... little, although they could not help being interested in observing the bohemianism of these gently reared but decadent sons of respectable English families. As soon as they could they left the table, and Tobey, observing their uneasiness in spite of his damaged and nearly useless optics, decided to send them to another room where they could pass the afternoon without further annoyance. Stubby escorted the party and ushered them into a good sized room which he said was "Algy's study," although no one ever ...
— Aunt Jane's Nieces and Uncle John • Edith Van Dyne

... don't go a minute! Here!" says he, "glue your optics to that." He chucked out a specimen peppered with yaller. "That's my mine. I'm just thinkin' of taking a half interest in the mint. You can pick her to go twenty thousand to the ton—help yourselves, gents." He began sortin' rock. "Oh, here!" says ...
— Red Saunders' Pets and Other Critters • Henry Wallace Phillips

... Scottish natural philosopher, born at Jedburgh; edited the "Edinburgh Encyclopaedia," in the pages of which Carlyle served his apprenticeship; specially distinguished for his discoveries in light, his studies in optics, and for his optical inventions, such as the kaleidoscope and the stereoscope; connected with most scientific associations of his time; wrote largely on scientific and other subjects, e. g., a Life of Newton, as well as Lives of Euler, Kepler, ...
— The Nuttall Encyclopaedia - Being a Concise and Comprehensive Dictionary of General Knowledge • Edited by Rev. James Wood

... epic boldness and wholeness we cannot attribute to Goethe. He is still a little straitened, a little pestered by the doubting and critical optics which our time turns upon man, a little victimized by his knowledge of limitary conditions and secondary laws. Nevertheless, a noble man is not to his eye "contained between hat and boots," but is of untold depth and dimension. He indicates traits of the soul with that repose in his facts and ...
— The Atlantic Monthly, Volume 16, No. 96, October 1865 • Various

... extending far and wide, but superficially, sometimes with exactness over particular departments, sometimes occupied together on one and the same portion, sometimes holding one part in common, and then ranging on this side or that in absolute divergence one from the other. Thus Optics has for its subject the whole visible creation, so far forth as it is simply visible; Mental Philosophy has a narrower province, but a richer one. Astronomy, plane and physical, each has the same subject-matter, but views it or treats it differently; lastly, Geology and Comparative ...
— The Idea of a University Defined and Illustrated: In Nine - Discourses Delivered to the Catholics of Dublin • John Henry Newman

... Celebrated Juvenile hit the Fresh Air the second Defendant came into The Dock, taking long sneaky Strides and undulating like a Roller Coaster. She was a tall Gal and very Pale, with Belladonna Optics and her Hair shook out and a fine rhythmical Bellows ...
— Knocking the Neighbors • George Ade

... psychological optics can contribute similar material. The questions of color harmony and color contrast, light intensity and mutual support of uniformly colored objects, of irradiation, depth and perspective, are significant for an effective display in the show-window, and the laboratory ...
— Psychology and Industrial Efficiency • Hugo Muensterberg

... Loose teeth by the sponge are soon lick'd up, And next time you MAY get home first. Still I'm not sure you'd like it exactly (Such tastes as a rule are acquired), And you'll find in a nutshell this fact lie, Bruised optics are ...
— Poems • Adam Lindsay Gordon

... stamping his foot vigorously. "It's all them dratted 'skeaters or flies, or sunthin's got inter my durned old optics as I can't see! Hail the ship, Eric my lad, an' tell 'em to send a boat to take us off, will ...
— Fritz and Eric - The Brother Crusoes • John Conroy Hutcheson

... investigation. As a school-boy I obtained (despite the frequent closing of my visual organs) considerable Insight into Physical Science in the course of numerous pugilistic encounters. A close Application to Optics at that time enabled me to get ...
— Punchinello, Vol. 1, No. 26, September 24, 1870 • Various

... fether" (Cooper), while pencil is from Old Fr. pincel (pinceau), a painter's brush, from Lat. penicillus, a little tail. The modern meaning of pencil, which still meant painter's brush in the 18th century, is due to association with pen. The older sense survives in optics and in the expression "pencilled eyebrows." The ferrule of a walking-stick is a distinct word from ferule, an aid to education. The latter is Lat. ferula, "an herbe like big fenell, and maye be called fenell giant. Also a rodde, ...
— The Romance of Words (4th ed.) • Ernest Weekley

... have dwelt at considerable length on repetition and inversion; we now come to the reciprocal interference [Footnote: The word "interference" has here the meaning given to it in Optics, where it indicates the partial superposition and neutralisation, by each other, of two series of light-waves.] of series. This is a comic effect, the precise formula of which is very difficult to disentangle, by reason of the extraordinary ...
— Laughter: An Essay on the Meaning of the Comic • Henri Bergson

... here "the appearance of a great many broken rivers of foam, making their way over the falls, while the fine islands add greatly to the beauty of the scene;" neither papa with his spectacles, nor I with my keen optics, could see more than a ripple on the surface of the water. These falls, however, are sufficient to prevent vessels of any great burden ascending or descending beyond this point of the river, and hence ...
— First Impressions of the New World - On Two Travellers from the Old in the Autumn of 1858 • Isabella Strange Trotter

... dubious waves of error tossed, His ship half-foundered, and his compass lost, Sees, far as human optics may command, A sleeping fog, and fancies it dry land: Spreads all his canvas, every sinew plies; Pants for 't, aims at it, ...
— Talkers - With Illustrations • John Bate

... volume, it is in all respects admirable. It is a mystery to us how Mr. Abbott can so simplify the most abstruse and difficult principles, in which optics especially abounds, as to bring them within the grasp of quite youthful readers; we can only be very grateful to him for the result. This book is up to our latest knowledge of the wonderful force of which it treats, and yet weaves all its ...
— Publisher's Advertising (1872) • Anonymous

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

... disgust, into the dull and matter-of-fact routine of actual existence. Hence the misery of the imaginative man!—hence his little sympathy with the mass, who, tame and soulless, look upon life and the things of life, not through the refining medium of ideality, but through the grossly magnifying optics of mere sense ...
— Wacousta: A Tale of the Pontiac Conspiracy (Complete) • John Richardson

... suffice for evidence: And whoso desires to penetrate Deeper, must dive by the spirit-sense— No optics like yours, at ...
— Browning's England - A Study in English Influences in Browning • Helen Archibald Clarke

... when they will cross each other in the exact moment of their several bisections—my aspiring half-crown tending gradually towards the fixed stars, so that perhaps it might be right to make the man in the moon trustee for that part of the accumulations which rises above the optics of sublunary bankers; whilst the Ceylon pillar is constantly unweaving its own granite texture, and dwindling earthwards. It is probable that each of the parties will have reached its consummation about the ...
— Narrative And Miscellaneous Papers • Thomas De Quincey

... other charlatans of this sort, assumed a theatrical magnificence, and an air of science calculated to deceive the vulgar. His best instrument of deception was the phantasmagoria; and as, by means of this abuse of the science of optics, he called up shades which were asked for, and almost always recognised, his correspondence with the other world was a thing proved by the ...
— The Memoirs of Louis XV. and XVI., Volume 2 • Madame du Hausset, and of an Unknown English Girl and the Princess Lamballe

... Edict of Nantes. He was graduated from Christ Church College, Oxford, in 1710, succeeding Keill as lecturer in Experimental Philosophy. He was especially learned in natural philosophy, mathematics, geometry, and optics, having lectured before the King on various occasions. He was very popular in the Grand Lodge, and his power as an orator made his manner of conferring a degree impressive—which may explain his having been accused of inventing the degrees. He was a loyal and able Mason, ...
— The Builders - A Story and Study of Masonry • Joseph Fort Newton

... that our careful efforts at concealment had been so easily seen through, with never a word to show us that they saw. They had followed up words of ours on the science of optics, asked innocent questions about glasses and the like, and were aware of the defective eyesight ...
— Herland • Charlotte Perkins Stetson Gilman

... astonishment and the mud, having swallowed eighteen ounces avoirdupois weight of the sacred soil of Mississippi while endeavoring to express my admiration of the performance of the mule. When I had removed the mire from my optics, in which cotton-seed would have grown freely, I beheld the mule in the dim distance. I could not see the brute plainly, but I could determine his course by the frequent falling of a human figure along the road. I knew the figures were those of his enemies, the much-abused Hebrews—that ...
— Incidents of the War: Humorous, Pathetic, and Descriptive • Alf Burnett

... English philosopher and mathematician, who was born on Christmas day, 1642, and died March. 20th, 1727. He was much distinguished for his very important discoveries in Optics and other branches of Natural Philosophy. See the first volume of Pursuit of Knowledge under Difficulties, forming the fourteenth volume of The ...
— The American Woman's Home • Catherine E. Beecher and Harriet Beecher Stowe

... and I'll get six months. He knew where I'd go. I haven't any money," and tears not only filled the wondrous optics of poor Miss Montmorency, but flowed ...
— The Strange Adventures of Mr. Middleton • Wardon Allan Curtis

... twelve months old. He was a man of striking mental vigour, an original and efficient teacher, and the author of a book upon algebra which was considered meritorious in its day. His knowledge of optics was highly remarkable. He had distinct ideas of perspective, of the projections of the sphere, and of the forms assumed by plane or solid figures in certain positions. For performing computations he devised a machine ...
— Diderot and the Encyclopaedists (Vol 1 of 2) • John Morley

... volumes of vapour,' etc. The last verse of Susan was to be got rid of, at all events. It threw a kind of dubiety upon Susan's moral conduct. Susan is a servant maid. I see her trundling her mop, and contemplating the whirling phenomenon through blurred optics; but to term her 'a poor outcast' seems as much as to say that poor Susan was no better than she should be, which I trust was not what you meant ...
— The Poetical Works of William Wordsworth - Volume 1 of 8 • Edited by William Knight

... transplendency[obs3]; luminousness &c. adj.; luminosity; lucidity; renitency|, nitency[obs3]; radiance,, radiation; irradiation, illumination. actinic rays, actinism; Roentgen-ray, Xray; photography, heliography; photometer &c. 445. [Science of light] optics; photology[obs3], photometry; dioptrics[obs3], catoptrics[obs3]. [Distribution of light] chiaroscuro, clairobscur[obs3], clear obscure, breadth, light and shade, black and white, tonality. reflection, refraction, dispersion; refractivity. V. shine, glow, glitter; glister, ...
— Roget's Thesaurus

... origin and formation of our solar system, and, extending beyond this, through the discoveries of Herschel, affording an insight into the distribution of the stellar archipelagos, and of the grand outlines of celestial architecture. In physics, the decomposition of light and the principles of optics discovered by Newton, the velocity of sound, the form of its undulations, and from Sauveur to Chladni, from Newton to Bernouilli and Lagrange, the experimental laws and leading theorems of Acoustics, ...
— The Origins of Contemporary France, Volume 1 (of 6) - The Ancient Regime • Hippolyte A. Taine

... so glorious a thing after all; if a tempering, not of human frailty, but of charity for the shortcomings, sympathy for the needs, of ordinary mortals, would not subdue the effulgence of his talents and virtues into mild lustre, more tolerable to the optics of fallible beholders ...
— At Last • Marion Harland

... were the best that the market could supply, yet he was able, from his knowledge of optics and chemistry, to improve them for his own uses far beyond the ability of the makers. His studio was filled with examples of his work, and his mind was stocked with information and opinions on all subjects ranging from international policies ...
— The Grain Ship • Morgan Robertson

... so wasted as they seem to have been. Not only Functions of a Quaternion, but other of these books, chatty books about hydro-mechanics and dynamics of a particle (no, not an article—that might have been helpful—a particle), gossipy books about optics and differential equations, many of these have a comforting air of cleanness; as if, having bought them at the instigation of my instructor, I had felt that this was enough, and that their mere presence in my bookcase ...
— If I May • A. A. Milne

... I was there?' said Lake, in rather a changed tone. Larkin looked up, and Lake laughed in his face quietly the most impertinent laugh he had ever seen or heard, with his yellow eyes fixed on the lawyer's pink little optics. 'I was there, and Hockley was there, and Mark Wylder was there—was not he?' and Lake stared and laughed, and the attorney stared; and Lake added, 'What a d—d cunning fellow you are; ...
— Wylder's Hand • J. Sheridan Le Fanu

... branches of physics—electricity and magnetism. The whole scheme of these important sciences rests on the hypothesis of "electric fluidity," or of imponderable matter of which the existence is nothing less than proved. Or optics? Optics certainly appertain to the most important and completest branch of physics, and yet the undulatory theory of light, which we accept now as the indispensable basis of optics, rests on an unproved hypothesis, on the subjective assumption of an ethereal medium, ...
— Freedom in Science and Teaching. - from the German of Ernst Haeckel • Ernst Haeckel

... you lie, son," said the man who was minus one of his optics, as he thrust his face close down to that of Ted, as though he would look straight into his heart; but this was something that no one else had ever succeeded in doing, and the attempt did not prove ...
— The Banner Boy Scouts - Or, The Struggle for Leadership • George A. Warren

... so might we here show that the cause which we have hitherto found to determine progress holds in these cases also. Instances might be given proving how, in Science, an advance of one division presently advances other divisions—how Astronomy has been immensely forwarded by discoveries in Optics, while other optical discoveries have initiated Microscopic Anatomy, and greatly aided the growth of Physiology—how Chemistry has indirectly increased our knowledge of Electricity, Magnetism, Biology, Geology—how ...
— Essays: Scientific, Political, & Speculative, Vol. I • Herbert Spencer

... computer-aided design and manufactures, medical electronics, fiber optics), wood and paper products, potash and phosphates, food, beverages, and tobacco, caustic soda, cement, construction, metals products, chemical products, plastics, ...
— The 2008 CIA World Factbook • United States. Central Intelligence Agency.

... be pert. To come back to what I was originally saying—I repeat, sir, I am at twelve paces from my object, six from the mirror, which, doubled by reflection, makes twelve; such is the law of optics. I suppose ...
— Handy Andy, Vol. 2 - A Tale of Irish Life • Samuel Lover

... physics, and as having forgotten all that had passed within the last two years, save when the sight of evils that he would have mitigated or removed, happened to remind him of it. He occupied himself busily with chemistry and optics, with astronomy and mechanics, and above all with meteorology, which was a new science in those days, and the value of which to the study of the conditions of human health, of the productions of the earth, of navigation, excited his most ardent anticipations. ...
— Critical Miscellanies (Vol. 2 of 3) - Turgot • John Morley

... respecting their composition. The first principles of natural philosophy or general physics ought not to be entirely unknown to the chemist. As the most active agents are fluids, elastic fluids, heat, light, and electricity, he ought to have a general knowledge of mechanics, hydrodynamics, pneumatics, optics, and electricity. Latin and Greek among the dead and French among the modern languages are necessary, and, as the most important after French, German and Italian. In natural history and in literature what belongs to a liberal education, ...
— Consolations in Travel - or, the Last Days of a Philosopher • Humphrey Davy

... pair of optics, love, you've never, never seen— One my mother blacked last night, the other ...
— Thelma • Marie Corelli

... discussed optics, as they called it, and whether a certain injury to the brain would produce blindness or not, but they could not agree about it, and said they must test it by experiment by and by; and next they discussed plants, and that interested me, because in the summer Sadie and I had ...
— The $30,000 Bequest and Other Stories • Mark Twain

... the Sand Beach Beacon was quite instructive; since we viewed there a practical application of an important principle in optics, based on the reflection ...
— By Water to the Columbian Exposition • Johanna S. Wisthaler

... the anthelion of the Scandinavian Alps, and the aerial cities so often seen by explorers and travelers? Do not they defy the law of optics? Must we understand the intricacies of articulation and the forces back of it before we can appropriate speech? Must we discard all belief in an infinite mind because we cannot understand it, and therefore say we are not a part of it because there is no Infinite? Should we discard the belief ...
— 10,000 Dreams Interpreted • Gustavus Hindman Miller

... emancipate mankind from the control of the animal instincts, and in the purely physical and mathematical sciences it does. In mathematics, dynamics, optics, acoustics, astronomy, electricity, engineering, and mechanics, the dictates of pure intellect are seldom interfered with by any blind impulse, attraction, or prejudice. But it is very different in the realm of opinion—in matters in which reason should be supreme, with ...
— Buchanan's Journal of Man, February 1887 - Volume 1, Number 1 • Various

... particular branch of knowledge, there is often an internal secret despair of finding the truth, which so far paralyzes their efforts as to prevent them from seeking it with that deep earnestness, without which it is seldom found. The history of optics furnishes a most impressive illustration of the justness of this remark. Previous to the time of Newton, no one seemed to entertain a real hope that this branch of knowledge would ever assume the form and clearness of scientific truth. The laws and properties of so ethereal a substance ...
— A Theodicy, or, Vindication of the Divine Glory • Albert Taylor Bledsoe

... the doughty commodore permitted his two unmatched optics to rest mournfully upon his shipmates. For nearly a minute he gazed at them, the while he struggled to stifle the awful fear within him. In the Gibney veins there flowed not a drop of craven blood, but the hideous prospect before him was almost more than the brave commodore ...
— Captain Scraggs - or, The Green-Pea Pirates • Peter B. Kyne

... doubt about the genuineness of a check we at once communicate, either by telegraph, special messenger, or telephone, with the supposed drawer of the check, and in this way turn doubt into certainty. During the last three years not a single wrong check has passed our vigilant optics, and, though I say it who should not, I do not believe there is a cleverer set of experts any where than those ...
— Disputed Handwriting • Jerome B. Lavay

... of light! How glows the soul, with more than earthly joy, In fondly imaging their blest employ! How oft, dear Cowper! at the close of day, When contemplation sheds her mental ray, I seem, through optics of the mind to see Thy sainted spirit, from incumbrance free! Marking how quick, in various hearts, arise Those seeds of virtue, that thy verse supplies! What joy, not speakable by mortal tongue, What praises, to the harp of ...
— Poems on Serious and Sacred Subjects - Printed only as Private Tokens of Regard, for the Particular - Friends of the Author • William Hayley

... brooding had to be abandoned as too expensive, and he proceeded to study optics. He gave a very accurate explanation of the action of the human eye, and made many hypotheses, some of them shrewd and close to the mark, concerning the law of refraction of light in dense media: but though several minor ...
— Pioneers of Science • Oliver Lodge

... making a name for himself as a master of plain business diction, was told off to draft me an answer to the War Office which should remove as many beams as possible out of their optics. He overdid it: the whole tone of it indeed was despondent, so much so that, as I told Braithwaite, a S. of S. for War getting so dark a presentment of our prospects would be bound to begin to think it might be better to recall the whole expedition. So I rewrote ...
— Gallipoli Diary, Volume 2 • Ian Hamilton

... grass lawn; and the same expense incurred to make the ground a laboratory of sweets, might suffice to render it agreeable to the palate as well as to the olfactory nerves, and that even without offending the most delicate optics. It is only in accordance with our plan to give the hint and to put before the reader such novel points as may facilitate the proposed arrangement. It is one objection to the formation of a kitchen garden ...
— Enquire Within Upon Everything - The Great Victorian Domestic Standby • Anonymous

... not embrace all the achievements by which Kepler has immortalised his name, and earned for himself the proud title of 'Legislator of the Heavens;' he predicted transits of Mercury and Venus, made important discoveries in optics, and was the inventor ...
— The Astronomy of Milton's 'Paradise Lost' • Thomas Orchard

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

... some place not of honour, stands or sprawls up querulous, that he too, though short, may see,—one squalidest bleared mortal, redolent of soot and horse-drugs: Jean Paul Marat of Neuchatel! O Marat, Renovator of Human Science, Lecturer on Optics; O thou remarkablest Horseleech, once in D'Artois' Stables,—as thy bleared soul looks forth, through thy bleared, dull-acrid, wo-stricken face, what sees it in all this? Any faintest light of hope; like dayspring after Nova-Zembla night? Or is it but blue sulphur-light, and spectres; ...
— The French Revolution • Thomas Carlyle

... sky. I can produce blazing symphonies. I will prove to you that colour is also music. This sounds as if I were a victim to that lesion of the brain called 'coloured-audition.' Perhaps! Not Helmholtz or Chevreul can tell me anything new in the science of optics. I am the possessor of the rainbow secrets—for somewhere in Iceland, a runic legend runs, there is a region vast as night, where all the rainbows—worn out or to be used—drift about in their vapoury limbo. I have the ...
— Visionaries • James Huneker

... diminutive that they bear the same proportion to the rest of the intellectual that Eels in vinegar do to the rest of the material world; the latter are only to be seen through microscopes, and the former only through the false optics of a Rosicrucian understanding." And finally, he decides that "these diminutive beings are only Sawney (that is, Alexander Pope), taking the change; for it is he, a little lump of flesh, that talks, instead of a little spirit." Dennis's profound gravity contributes ...
— Calamities and Quarrels of Authors • Isaac D'Israeli

... find in this number an excellent article on "Parlor Magic," in which they are told, by Professor Leo Grindon, one of the Faculty of the Royal School of Chemistry in Manchester, England, how to perform some very interesting, and in some cases, quite astonishing experiments in chemistry, optics, etc. Some of our readers may be familiar with a few of these experiments, but the majority of them will be found novel to nearly all young people. Occasionally, there are materials or ingredients called for, which are somewhat expensive, and some of the experiments require a good deal of time ...
— St. Nicholas Magazine for Boys and Girls, Vol. 5, October 1878, No. 12 • Various

... anatomy only that Master Albert studies. He has a taste for optics also; and knows all about refraction and reflection. What with his knowledge of the skull inside, and the vitreous lens outside, if any man in the world is to draw an eye, here's the man to do it, surely! With a hand which can give ...
— Ariadne Florentina - Six Lectures on Wood and Metal Engraving • John Ruskin

... discourses and systems of human learning. In this branch [of science] the beam of light is explained on those methods of demonstration which form the glory not so much of Mathematics as of Physics and are graced with the flowers of both [Footnote: 5. Such of Leonardo's notes on Optics or on Perspective as bear exclusively on Mathematics or Physics could not be included in the arrangement of the libro di pittura which is here presented to the reader. They are however but few.]. But its axioms being laid down at great length, I shall abridge them to a conclusive brevity, ...
— The Notebooks of Leonardo Da Vinci, Complete • Leonardo Da Vinci

... musical engagements was eagerly devoted to study. In his desire to perfect his knowledge of the more abstruse parts of the theory of music he had occasion to learn mathematics; from mathematics the transition to optics was a natural one; and once he had commenced to study optics, he was of course brought to a knowledge of the telescope, and thence ...
— The Story of the Heavens • Robert Stawell Ball



Words linked to "Optics" :   fibre optics, resolve, aplanatic, catoptrics, aspheric, optical, meniscus, astigmatism, aspherical, holography, natural philosophy, bifocal, stigmatism, aberrate, collimate, astigmia, physics, reflect, apochromatic, property, refract



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