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Updated: May 2, 2025
A single movement is entirely, by the hypothesis, a movement between two stops; if there are intermediate stops, it is no longer a single movement. At bottom, the illusion arises from this, that the movement, once effected, has laid along its course a motionless trajectory on which we can count as many immobilities as we will.
The strain of drawing a heavy bow is apt to pull the bow hand out of the line of sight. A 48-pound bow well drawn and loosed will give a lower trajectory than one of 55 pounds sluggishly handled. By the weight of a bow is not meant its avoirdupois, but the force necessary to draw the arrow to its head on the bow. It is all important to know how to string the bow.
The strong structural lines are the same; the capitals still display the inflorescence of Mussulman involutions, the fabulous entanglements of Assyrian patterns, reminiscences of Asiatic art transplanted to our soil; but we already see the union of dissimilar bays; columns struggle upwards, pillars are taller, the wide arches are less rigid, and have a lighter and longer trajectory; and the plain walls, enormous but already light, are pierced at prodigious heights with holes admitting the day.
For an hour the two had been standing there, wrapped in their long military overcoats, while Nissr had swooped on her appointed ways, with hurtling trajectory that had cleft the dark.
In fact, this deformed object, reduced to nothing, and quite unrecognisable, was the body of Satellite flattened like a bagpipe without wind, and mounting, for ever mounting! Thus a curious but logical, strange yet logical phenomenon took place under these singular conditions. Every object thrown out of the projectile would follow the same trajectory and only stop when it did.
When positive science speaks of time, what it refers to is the movement of a certain mobile T on its trajectory. This movement has been chosen by it as representative of time, and it is, by definition, uniform. Let us call T , T , T , ... etc., points which divide the trajectory of the mobile into equal parts from its origin T0.
Every kind of rocket is there: rockets which simply soar with a rush, burst into stars and fall; rockets which when they reach the highest point of their trajectory explode with a report that shakes the city and must make some of the campanili very nervous; rockets which burst into a million sparks; rockets which burst into a thousand streamers; rockets whose stars change colour as they fall; rockets whose stars do not fall at once but hang and hover in the air.
After a while the Ranger's inner lock opened, and a group of men hurried across to the orbit-ship. Probably a searching party, Tom thought. Soon the men came back, then returned to the orbit-ship. After another minute, he felt the vibration of the Scavenger's motors, and he knew that his snare had been triggered. He saw the little ship break free and streak out in its curving trajectory.
The wharves, roofs, and steeples of Charleston were black with expectant crowds, straining their eyes down the harbor where the silent castle loomed up through the dim morning light. Boom! From a mortar battery to the south a bombshell rises high into the air, describes its graceful trajectory and falls within Sumter's enclosure. It is the signal gun.
Such shelter is an excellent device on the condition, however, that behind it, a useful fire can be delivered. Look at these two ranks crouched under the cover of a small trench. Follow the direction of the shots. Even note the trajectory shown by the burst of flame. You will be convinced that, under such conditions, even simple horizontal firing is a fiction.
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