JOURNAL 



OF 



NATURAL PHILOSOPHY, CHEMISTRY, 



AND 



THE ARTS. 



AUGUST, 1811. 



ARTICLE I. 



On the Motion of Rockets both in Nonresisting and Resisting 

 Mediums, By W, Moore, Esq. 



(Continued from Vol. XXVIII, p. I69J 



To Mr. W. NICHOLSON. 

 SIR, 



JL HE following is a farther extension of my essay con- 



cerninj*' the motion of rockets in different mediums; which, 



if worthy acceptance, is quite at your service. The last two 



propositions are given as preparatory to my next inquiry, 



which is that of the several effecis of the wind upon the first 



motion of these machines, when it is blowing- in any given 



direction and velocity ; which I will communicate to you as 



soon as time will allow me properly to prepare a paper of 



them. 



From the results of the propositions that here follow, Curiott' fact« 



some very curious and important facts are ascertained; as ^sctrtaned ih 



,,"'.■' the foilowiaj 



that the motion ot a rocket can never become uniform propoiitioni, 



throughout the time of its burning under any law of resist- 



ince whatever; that bodies projected into resisting me- 



Vol, XXIX, No. 134,— -Aug. 18U, R dimms 



