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French text. Facsimile of the 1749 first edition. Hard cover, 8vo. Collation: [4], xxxviii,184 [8] pp. In publisher's brown cloth binding with faux spine labels lettered in silver. With four full-page reproduction plates. CONDITION: Fine. Very lightly bumped bottom corners. Ghost of a pencil mark to front free endpaper. ** A pleasing facsimile of d'Alembert's study of the "wobble" of the Earth on its axis, causing a change in the position of the sun seen during the Spring Equinox. ** Jean-Baptiste le Rond d'Alembert (1717-1783) was a French mathematician, and physicist, as well as being a co-editor of Diderot's famous "Encyclopédie" (1751-1772). He is most famous for his contributions to algebra (the "fundamental theorem of algebra") and physics (the "wave equation"). In this work, he gives a detailed explanation as to the motion of the Earth, and its effect on our observation of the Spring Equinox (with charts at the end to make sure you're following). An affordable way to own one of the great works of physics and astronomy. REF: Original work, BnF No.12148, bpt6k1521937c. (Paris: Chez David l'aîné, Libraire, Jean-Baptiste Coignard, Printer, 1749.)
Ref: SCI 9329
$125.00