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Updated: June 28, 2025
So highly did he esteem this, that he directed the diagram to be engraved on his tombstone. He also treated of the quadrature of the circle and of the parabola; he wrote on Conoids and Spheroids, and on the spiral that bears his name, the genesis of which was suggested to him by his friend Conon the Alexandrian. As a mathematician, Europe produced no equal to him for nearly two thousand years.
There were stone jugs at each extremity, the sergeants of the rear-rank of this gastronomic platoon, whose corks had blown out and were still flying in space, while a bubbling white foam issued from their necks and fell majestically over their sides after describing a long parabola. A misleading sign, indeed!
"Did you imply that the orbit has ceased to be a parabola?" "Just so." "Is it then an hyperbola? and are we to be carried on far and away into remote distance, and never, never to return?" "I did not say an hyperbola." "And is it not?" "It is not." "Then it must be an ellipse?" "Yes." "And does its plane coincide with the plane of the earth?" "Yes." "Then it must be a periodic comet?" "It is."
The balloon is said to have described a visible parabola, like the trajectory of a projectile, and fell at Evreux in safety and beyond the range of the enemy's fire, though not far from their lines. This was on the 23rd of September.
The outline which would bound my walks would be, not a circle, but a parabola, or rather like one of those cometary orbits which have been thought to be non-returning curves, in this case opening westward, in which my house occupies the place of the sun.
His appearance was only momentary, yet in that moment Samuela hurled his harpoon into the air, where it described a beautiful parabola, coming down upon the disappearing monster's back just as the sea was closing over it. Oh, it was a splendid dart, worthy of the finest harpooner that ever lived!
Whether it was a parabola or a hyperbola, however, or whether it was disturbed or not, made very little difference as, in any case, the Projectile was bound to quit pretty soon the cone of the shadow, at a point directly opposite to where it had entered it.
It is one of the sad features of this subject, that each section has to end in lamentation. Servitude in the sphere of politics; literary feebleness in scholarship; decadence in art: to shun these conclusions is impossible. He who has undertaken to describe the parabola of a projectile, cannot be satisfied with tracing its gradual rise and determining its culmination.
Now and then, as the shell's wail swung over its long parabola, there came with the detonation, across the roofs, the rumble of falling masonry. Once I passed a house quietly burning, and on the pavement were lopped-off trees. The impartiality with which those far-off gunners distributed their attentions was disconcerting.
His gills crumpled in the rough embrace of the mud, and his eyes and sucker were choked with slime. It was only a desperate, convulsive, aimless wriggle that freed him. The next time he cleared his immediate surroundings, and shot a full six inches upwards, only to sink slowly to the ooze again, motionless, and exhausted. He had described an elegant parabola.
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