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 ProjectilesUniversity Press, 1895 - 56 pages |
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Supplement to a Revised Account of the Experiments Made with the Bashforth ... Francis Bashforth Aucun aperçu disponible - 2014 |
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Supplement to a Revised Account of the Experiments Made with the Bashforth ... Francis Bashforth Aucun aperçu disponible - 2018 |
Expressions et termes fréquents
4-inch B.L. gun accuracy Advanced Class afterwards BALLISTIC EXPERIMENTS Bashforth Chronograph calculated range calculating trajectories Captain J. P. chronoscope coefficients of resistance correct cubic law cylinder G diameter Director of Artillery electro-magnet Eleva elevation elongated projectiles elongated shot errors experimental experiments of 1867-8 flight Fort Monroe galvanic current given Gunnery J. P. Morgan John Bernoulli kite-like action Krupp Krupp'sche Fabrik labours law of resistance Major Ingalls Martini-Henry Mayevski measured ment Meppen Motion of Projectiles muzzle velocity O. S. Committee obtained ogival-headed shot old M.L. guns Ordnance Select Committee printed Proceedings Professor Bashforth's Professor Greenhill published R. A. Inst R. A. Institution R. A. Officers R. M. Academy range table recent B.L. guns records referred remaining magnetism Remaining Velocity remarked Report round shot ROYAL ARTILLERY OFFICERS scientific screens ST JOHN'S COLLEGE steadiness Tabelle Tables of Remaining tested unsteady velocities 900 vertical drift Woolwich αγ دو
Fréquemment cités
Page 37 - Tables of remaining velocity, time of flight, and energy of various projectiles, calculated from the results of experiments made with the Bashforth chronograph, 1865 —1870. London, 1871; 8°.
Page 46 - Bashforth's tables, has been tested by firing a large number of rounds through paper screens placed at different points along the range. The rifle used in the experiment was the Martini-Henry, and the screens were erected at intervals along a 500 yards and a loco-yards range. The result of the experiment was most satisfactory, the mean heights of the bullet-holes in the screens agreeing closely with the heights found by calculation.
Page 32 - Those Englishmen who take an interest in the progress of science are apt to suppose that, in some way which they have never clearly understood, the pursuit of scientific truth is not only its own reward, but also a sufficient source of food, drink, and clothing.
Page 29 - The differential character of this instrument makes the results obtained from it worthy of a high degree of credit, " since in this way each experiment supplies means of testing the accuracy of the results, which are wholly wanting when only two intervals of time are measured, and that by two different instruments...
Page 32 - ... in the public mind a vague belief that men who occupy their time with the endeavour to add to knowledge in this or that branch of science are mysteriously supported by the State Exchequer, and are thus fair game for attacking with all sorts of demands for gratuitous service ; or, on the other hand, the notion at work appears sometimes to be that the making of new knowledge — in fact, scientific discovery — is an agreeable pastime, in which some ingenious gentlemen, whose business in other...
Page 32 - ... directly connected with the avowed object of our association; namely, ' the advancement of science.' I propose to place before you a few observations upon the provision which exists in this country for the advancement of that branch of science to which section D is dedicated; namely, biology. I am aware that it is usual for those who speak of men of science and their pursuits to ignore altogether such sordid topics as the one which I have chosen to bring forward. A certain pride, on the one hand,...
Page 48 - On the Trajectory of a Projectile for the Cubic Law of Resistance by Professor Greenhill, MA, appeared in the Proceedings for July, 1889.
Page 47 - The experiments upon which they are " based were made under his own direction at various times between 1865 and " 1876, with his chronograph, probably the most complete and accurate instru" ment for measuring small intervals of time yet invented,