D'ALEMBERT, JEAN LE ROND.

Sur les Tautochrones.

(Berlin, Haude et Spener, 1767). 4to. Without wrappers as issued in "Memoires de l'Academie des Sciences et Belles Lettres", tome XXI, pp. 381-413.

First edition, in the periodical form. In this paper D'Alembert comments on the previous solutions - by Huygens, Fontaine, Euler, Lagrange - to the tautochrone problem, the problem of finding the curve for an object sliding without friction in uniform gravity to its lowest point and in its shortest time.- Withbound a paper by M.J.A. Euler: Recherches des Forces dont les Corps célestes sont sollicités qu'ils ne sont pas spherique. Berlin, Acad. Royale, tome XXI, 1767.

Order-nr.: 39045