"Parabolic" Quotes from Famous Books
 ... is merely a source of light, and of course, of heat, which is placed at the focus of a parabolic reflector so that all of the rays emanating from the source travel in parallel lines. A searchlight, of course, gives off heat. If we place a lens of the same size as the searchlight aperture in the path of the beam and concentrate all the light, and heat, at one ...
— Astounding Stories of Super-Science, March 1930 • Various
... ground spherical, the reduction to parabolic form being attained in the process of polishing. A very interesting account of the practice of dealing with very large lenses will be found in Nature, May 1886, or the Journal of the Society of Arts, same date (I presume), by ...
— On Laboratory Arts • Richard Threlfall
... frequently on our Lord's lips, and that in very various connections. He sometimes, as in the instance before us, appended it to teaching which, from its parabolic form, required attention to disentangle the spiritual truth implied. He sometimes used it to commend some strange, new revolutionary teaching to men's investigation—as, for instance, after that great declaration of the nullity of ceremonial worship, ...
— Expositions of Holy Scripture - St. Matthew Chaps. IX to XXVIII • Alexander Maclaren
... by thermal and other effects of the current. They are chiefly used for lighting halls and railway stations, streets and open spaces, search-lights and lighthouses. They are sometimes naked, but as a rule their brightness is tempered by globes of ground or opal glass. In search-lights a parabolic mirror projects all the rays in any one direction, and in lighthouses the arc is placed in the focus of the condensing lenses, and the beam is visible for at least twenty or thirty miles on clear nights. Very powerful arc lights, equivalent to hundreds ...
— The Story Of Electricity • John Munro
... at present, it was necessary, in shooting with a rifle, to aim lower than the mark, in order to allow for an upward kick at the discharge; and, on the other hand, it was necessary, in shooting with heavy ordnance, to aim higher than the mark, in order to allow for a parabolic droop of the cannon-ball in transit. Many dramatists, in their endeavor to score a hit, still employ these compromising tricks of marksmanship: some aim lower than the judgment of their auditors, others aim higher than their taste. But, in view of the fact that under present metropolitan ...
— The Theory of the Theatre • Clayton Hamilton
... A. Thus the parallelism of moments in a temporal series begets the parallelism of levels in an instantaneous space, and thence—as it is easy to see—the parallelism of rects. Accordingly the Euclidean property of space arises from the parabolic property of time. It may be that there is reason to adopt a hyperbolic theory of time and a corresponding hyperbolic theory of space. Such a theory has not been worked out, so it is not possible to judge as to the character of the ...
— The Concept of Nature - The Tarner Lectures Delivered in Trinity College, November 1919 • Alfred North Whitehead
... venial treason bent, Frame thyself a government, For thy crest a brirnless hat, Poverty's aristocrat! Nonne habeam te tristem, Planet of the human system? Comet lank and melancholic —Orbit shocking parabolic— Seen for a little in the sky Of the world of sympathy— Seldom failing when predicted, Coming most when most restricted, Dragging a nebulous tail with thee Of hypothetic vagrancy— Of vagrants large, and vagrants small, Vagrants scarce visible at all! Matchless oracle of woe! Anarchy in ...
— What's Mine's Mine • George MacDonald
... seemed to him satisfactory, for though inclined to rebellion and positivism he was still the pupil of that mythical philosophy which attributed the value of things to their origin rather than to their uses, because it had first, in its parabolic way, erected the highest good into a First Cause. Still breathing, in spite of himself, this atmosphere of materialised Platonism, Hume could not discover the true origin of anything without imagining ...
— The Life of Reason • George Santayana
... referring to these things. Everything in this monster city interests me, and I cannot keep from talking, even at the risk of being instructive. People here seem always to express distances by parables. To a stranger it is just a little confusing to be so parabolic—so to speak. I collar a citizen, and I think I am going to get some valuable information out of him. I ask him how far it is to Birmingham, and he says it is twenty-one shillings and sixpence. Now we know that doesn't help a man who is trying to learn. I find myself down-town somewhere, ...
— Mark Twain, A Biography, 1835-1910, Complete - The Personal And Literary Life Of Samuel Langhorne Clemens • Albert Bigelow Paine
... globes like our own. They do not come from our own volcanoes, for the velocities with which they entered our atmosphere prove their cosmical origin. Had our atmosphere not entangled them, many, circuiting the sun in a parabolic or hyperbolic curve, would have escaped for ever from our system. The swift motions, which they had on entering our atmosphere, are considerably greater on the average than those of comets, and probably ...
— The Astronomy of the Bible - An Elementary Commentary on the Astronomical References - of Holy Scripture • E. Walter Maunder
... that it is possible by just a touch to convert the noblest sentiment into commonplace. No more than a touch is necessary. The parabolic mirror will reflect the star to a perfect focus. The elliptical mirror, varying from the parabola by less than the breadth of a hair, throws an image which is useless. But Mr. Cardew was far more wrong than he was right. He ...
— Catharine Furze • Mark Rutherford
... which dominates all the magnificent development of the social life, equally governs the fate and the parabolic career of ...
— Socialism and Modern Science (Darwin, Spencer, Marx) • Enrico Ferri
... asked him what he thought of Professor Silliman's notion about the comet's tail being an electric phenomenon, but he seemed to think little was known on the subject. He said this comet had never been seen before, and might never return again, as its path seemed parabolic, and not elliptical; but he said that what was peculiarly remarkable about it was the extreme agitation observed in the tail, and even in the nucleus, the motion appearing to be vibratory. With regard to meteoric ...
— First Impressions of the New World - On Two Travellers from the Old in the Autumn of 1858 • Isabella Strange Trotter |
