EULER, [LEONHARD].

Recherches sur la veritable courbe que decrivent les corps jettes dans l'air ou dans un autre fluide quelconque.

(Berlin, Haude et Spener, 1755). 4to. No wrappers as issued in "Memoires de l'Academie Royale des Sciences et Belles Lettres". tome IX, pp. 321-352.

First printing of this Euler-paper in which he examines curves of airborne bodies. Euler describes how the forces acting on a cannonball give different differential equations for the ascending branch than for descending branch.

See Eneström E217.

Order-nr.: 44267