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- W3091883325 abstract "At the beginning of this month Lieut.-Col. H. R. Halford applied to the author to obtain for him the law of atmospheric resistance resulting from his experiments in shooting with Metford’s match-rifle, a small bore with increasing pitch. Col. Halford had determined by experiment the elevations required for the ranges 100, 200, &c. up to 1100 yards, each determination being derived from a very large number of shots; and the table of experimental elevations, corresponding to these various ranges, formed the datum furnished to the author. As all the trajectories were very low, the greatest elevation amounting to only 2° 35' 30”, the author assumed, as a sufficiently close approximation that the vertical motion was determined solely by the force of gravity, and that the effect of the resistance of the air on the velocity was the same as if the projectile had moved strictly in a horizontal line. Consequently the depression of the point in which the target is struck, below the initial tangent to the path, becomes a measure of the time of flight, according to the usual law of falling bodies; and the mean horizontal velocity being thus known for a series of different ranges, we can calculate the mean velocity for every 100 yards of a long range, and thence determine the resistance." @default.
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- W3091883325 date "1868-12-31" @default.
- W3091883325 modified "2023-09-23" @default.
- W3091883325 title "On the law of the resistance of the air to rifled projectiles" @default.
- W3091883325 doi "https://doi.org/10.1098/rspl.1867.0065" @default.
- W3091883325 hasPublicationYear "1868" @default.
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