An essay on the powers and mechanism of nature; : intended, by a deeper analysis of physical principles, to extend, improve, and more firmly establish, the grand superstructure of the Newtonian system. / By Robert Young.

  • Young, Robert
Date:
M DCC LXXXVIII. [1788]
Catalogue details

Licence: Public Domain Mark

Credit: An essay on the powers and mechanism of nature; : intended, by a deeper analysis of physical principles, to extend, improve, and more firmly establish, the grand superstructure of the Newtonian system. / By Robert Young. Source: Wellcome Collection.

    159/374 (page 131)
    [ ] The obftacle, by its cohefion, relifls to the a6live body only (c 130), but does not refift the admiffionof the active substance (m 116); the obftacle, therefore, impedes the body only, but not the ACTIVE substance; and the active SUBSTANCE Continuing to move, leaves behind it the body to which it belonged, and, finding the obftacle in its way, readily enters it. It has been already proved by inference from c the effe8:s, that the active substance does pafs out of an impelling body into one impelled. Here it is proved from the nature of the active SUBSTANCE, as motivc and unfolid, and the nature of matter as quiefcent and refilling pene- tration by matter, that this muft neceflarily happen. The obstacle becomes active by this d ACCESSION TO IT OF THE ACTIVE SUBSTANCE (H115). When a sufficient quantity of acti- e VITY IS THUS INDUCED IN THE OBSTACLE, IT WELL BE CAPABLE OF MOVING, SO AS NOT TO IMPEDE THE OTHER ACTIVE BODY, AND WILL BE NO LONGER AN OBSTACLE, UNLESS ITSELF BE ALSO IMPEDED BY ANOTHER OBSTACLE.