D'ALEMBERT, Jean le Rond. Essai d'une Nouvelle Théorie de la Résistance des Fluides, Paris: chez David l'aîné, 1752, small 4°, FIRST EDITION, 2 folding engraved plates (small hole to margin of last few leaves and plates), contemporary calf, spine gilt (tail of spine skilfully repaired, recornered, rubbed), bookplate of Philip Earl of Stanhope. [Norman 35; Polak 47]

細節

D'ALEMBERT, Jean le Rond. Essai d'une Nouvelle Théorie de la Résistance des Fluides, Paris: chez David l'aîné, 1752, small 4°, FIRST EDITION, 2 folding engraved plates (small hole to margin of last few leaves and plates), contemporary calf, spine gilt (tail of spine skilfully repaired, recornered, rubbed), bookplate of Philip Earl of Stanhope. [Norman 35; Polak 47]

拍品專文

An important work which analysed the forces exerted on an immersed oviform body and led to D'Alembert's statement of "the hydrostatical paradox: namely, that since there was no reason to assume that the flow pattern behind the oviform body differed from that in front of the body, then the forces exerted on the front of the body would be counteracted by those exerted on the back, and the body would have no resistance to the flow whatsoever" (Norman).