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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.






WordNet 3.0 © 2010 Princeton University








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"Parabola" Quotes from Famous Books



... behind it, is a circle only when a perpendicular, let fall on the plane from the eye, passes through the centre of the sphere. In other positions the projection of the sphere becomes an ellipse, or one of its varieties, the parabola and hyperbola. The parabola is the boundary of the projection of a sphere upon a plane, when the eye is just as far from the plane as the outer edge of the sphere is, and the hyperbola is a similar curve formed by bringing the eye ...
— Atlantic Monthly, Vol. 5, No. 30, April, 1860 • Various

... miraculously fast, never employs a straight line except to cut off an angle and so obtain a curve, neither does man himself always rely upon it. The bullet which he aims direct proceeds by a curve, and when you wish to strike a certain point in space, you impel your bombshell along its cruel parabola. None of your men of science have drawn from this fact the simple deduction that the Curve is the law of the material worlds and the Straight line that of the Spiritual worlds; one is the theory of finite creations, ...
— Seraphita • Honore de Balzac

... side, toppled over on the other, and with a tremendous crash, and sudden shock, sent all the outsides, myself among the number, flying through the air like sea-gulls. As for me, after describing a very respectable parabola, my angle of incidence landed me in a bonnet-maker's shop, having passed through a large plate-glass window, and destroyed more leghorns and dunstables than a year's pay would recompense. I have but light recollection of the details of that occasion, until ...
— The Confessions of Harry Lorrequer, Vol. 1 • Charles James Lever

... the blade, then the ear, after that the full corn in the ear. A person who complains of the men of 1688 for not having been men of 1835 might just as well complain of a projectile for describing a parabola, or of quicksilver for being heavier ...
— Critical and Historical Essays Volume 1 • Thomas Babington Macaulay

... moment, as if the vessel was responsive to the appeal of Aramis, a second cloud of smoke mounted slowly to the heavens, and from the bosom of that cloud sparkled an arrow of flame, which described a parabola like a rainbow, and fell into the sea, where it continued to burn, illuminating a space of a quarter of ...
— The Man in the Iron Mask • Alexandre Dumas, Pere

... their fancy. In Harry and Lucy, for instance, Lucy, who is the only human figure in the book, is perpetually being snubbed by the terrible hard-headed Harry, with his desperate interest in machinery, by the repellent father who delights to explain the laws of gravity and the parabola described by the stone which Harry throws. What was undervalued in those old, dry, high-principled books was the charm of vivid apprehension, of fanciful imagination, of simple, neighbourly kindliness. ...
— From a College Window • Arthur Christopher Benson



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



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