Keywords: Duhem Statique ch 2 fig 11.jpg en Fig 11 Sketch of Leonardo da Vinci suggesting he knew the true magnitudes of the normal and tangential components of force of a heavy body on an inclined plane Les Origines de la Statique 1905-1906 Pierre Duhem 1905 PD-old-auto-1996 France 1996 Works by this author may also be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works France is a life + 70 country 1916 Mechanical diagrams Manuscripts of the Bibliothèque de l'Institut de France Pierre Duhem |