Keywords: Duhem Statique ch 2 fig 8.JPG en Fig 8 Another of Leonardo da Vinci's diagrams illustrating his tentative supposition that the proportion of the speed of a sphere down an inclined plane relative to free fall is the same as the fraction of the horizontal distance of the vertical of the point of contact to the vertical of the center of gravity over the sphere's radius; and later the proportion of the weights on either side of the vertical of the point of contact The figure is missing a label n whose location seems to belong at the bottom of the vertical of the center of gravity 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 1916 Mechanical diagrams Manuscripts of the Bibliothèque de l'Institut de France Pierre Duhem |