A supplement to a revised account of the experiments made with the Bashforth chronograph to find the resistance of the air to the motion of projectiles

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1895 edition. Excerpt: ...under their special care. But I had no intention to make further experiments under such adverse conditions. I therefore applied for permission to remove my chronograph from Shoeburyness as soon as the experiments of 1867-8 were completed, unless the authorities had some additional experiments to be made, as / had no more to propose under existing circumstances. They desired to have the resistance of the air to a Whitworth shot determined. After considerable delay the experiment (of no scientific interest), was made, after which the chronograph was removed from Shoeburyness. 244. In carrying out the experiments of 1867-8, I had the assistance of Major C. F. Young, R. A., Director of Artillery Studies; Lieut.-Col. C. H. Owen, R.A., Professor of Artillery R. M. Academy; and three R. A. Officers, who had been members of the Advanced Class. These were at first Captain J. P. Morgan, R.A., and Captain A. Pord, R.A. But when the former left to take up an appointment, Lieut. J. Sladen, R.A., succeeded him. In turns one of these officers took charge of the gun, while the other assisted in the instrument room during the experiments at Shoeburyness; and at Woolwich they all took part in the reduction of the observations. Thus these three R. A Officers rendered efficient assistance, and became thoroughly conversant with all parts of my method of experimenting. 1 Reports, &c. p. 159. 30 METHOD OF CALCULATING TRAJECTORIES. 245. The next question that presented itself to me was--how were the results obtained to be used for the calculation of the trajectories of projectiles? I decided to adopt the solution of John Bernoulli, and to calculate the necessary integrals by quadratures, for the cubic law of resistance. These preliminary calculations,...