. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. eminentmathematicians, have favored the belief in the possibility of perpetualmotion, although admitting difficulties in the way of its it, w^e find De la Hire, Parent, Papin, Desaguliers, and the greatmajority of scientific men of all classes and co
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. eminentmathematicians, have favored the belief in the possibility of perpetualmotion, although admitting difficulties in the way of its it, w^e find De la Hire, Parent, Papin, Desaguliers, and the greatmajority of scientific men of all classes and countries. It is evident,therefore, that even mathematicians are not agreed. 914. PERPETUAL MOTION,onstration by Dr. Desaguhers in The inventors paradox. A dem-1719, in regard to the balance ofweights at unequal dis-tances from the center ofoscillation, showing thatthe weight P balances theweight W at any positionon the cross arm H, I, onthe vertical arm B, E,when pivoted to thedouble-scale beam A, B,and D, E, in which theresolution of forces ismade apparent in a prac-tical form so often over-looked by the inventorsof perpetual-motion cut representing Desaguliers balance, with his explanation, goes to show how persistently inventors have ignored the geometrical bearing of this problem for nearly two PERPETUAL MOTION. 365 Desaguliers^ Demonstration.—A, C, B, E, K, D is a balance in the formof a parallelogram passing through a sht in the upright piece, N, O, stand-ing on the pedestal, M, so as to be movable upon the center pins C and the upright pieces, A, D and B, E, of this balance, are fixed at rightangles the horizontal pieces F, G and H, I. That the equal weights, P, W,must keep each other in equihbrium is evident; but it does not at firstappear so plainly, that if W be removed to V, being suspended at 6, yetit shall still keep P in equilibrium, though the experiment shows it. Nay,if W be successively moved to any of the points, i, 2, 3, E, 4,
Size: 1656px × 1509px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
