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Parabola   /pərˈæbələ/   Listen
Parabola

noun
(pl. parabolas)
1.
A plane curve formed by the intersection of a right circular cone and a plane parallel to an element of the curve.






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"Parabola" Quotes from Famous Books



... lord," said Cosmo, taking the first word that apology might be immediate, "I could make no one hear me, and therefore took the liberty of describing a parabola ...
— Warlock o' Glenwarlock • George MacDonald

... from one to the other a constant sum of vector radii"; the Hyperbole, "with repulsive foci, the desperate curve which plunges into space in infinite tentacles, approaching closer and closer to a straight line, the asymptote, without ever finally attaining it"; the Parabola, "which seeks fruitlessly in the infinite for its second, lost centre: it is the trajectory of the bomb: it is the path of certain comets which come one day to visit our sun, then flee into the depths whence they never ...
— Fabre, Poet of Science • Dr. G.V. (C.V.) Legros

... propositions they lead to are really general propositions. For example, when we have proved with respect to the circle, that a straight line can not meet it in more than two points, and when the same thing has been successively proved of the ellipse, the parabola, and the hyperbola, it may be laid down as a universal property of the sections of the cone. The distinction drawn in the two previous examples can have no place here, there being no difference between all known ...
— A System Of Logic, Ratiocinative And Inductive • John Stuart Mill

... a certain beautiful curve known to geometricians by the name of the parabola. Its form is shown in the adjoining figure; it is a curved line which bends in towards and around a certain point known as the focus. This would not be the occasion for any allusion to the geometrical properties of this curve; they should be sought in works on mathematics. It will here ...
— The Story of the Heavens • Robert Stawell Ball

... as the Ford Car hit the tar barrel end on. Its front axle went back ten inches and the rear wheels rose upward. Two shadowy forms, that were groundlings at another time, took wings and flew in a neat parabola over the windscreen, striking the metal surface of the road with a single thud. They made no effort to rise, but lay in awkward sprawling attitudes as though in the midst of violent ...
— Men of Affairs • Roland Pertwee

... remembered, that an intellect of Burke's combining power and enormous compass, could not, from necessity of nature, abstain from such speculations. For a man to reach a remote posterity, it is sometimes necessary that he should throw his voice over to them in a vast arch—it must sweep a parabola—which, therefore, rises high above the heads of those next to him, and is heard by the bystanders but indistinctly, like bees swarming in the upper air before they settle on the spot ...
— The Notebook of an English Opium-Eater • Thomas de Quincey

... and the horse "went into figures," as the cow-puncher phrase of that day was. There was a cut bank about four feet high on the hither side of the river, and over this the horse bucked. We went into the water with a splash. With a "pluck" the calf followed, described a parabola in the air, and landed beside us. Fortunately, this took the rope out from under the horse's tail, but left him thoroughly frightened. He could not do much bucking in the stream, for there were one or two places where we had to swim, and the shallows were either sandy or muddy; but ...
— Theodore Roosevelt - An Autobiography by Theodore Roosevelt • Theodore Roosevelt

... one of which is determined by a straight line and the other by a parabola approach one another, the rectangle included by the revolution of each will be equal to the sum of a series ...
— Moonbeams From the Larger Lunacy • Stephen Leacock



Words linked to "Parabola" :   conic section, parabolic, parabolical, conic



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