DescriptionDuhem Statique ch 2 fig 7.jpg	English: Fig. 7: Another diagram showing the derivation of the magnitude of the circumvolubile (torque) from the product of the shortest distance of the line of force that pulls a lever arm to the fulcrum and the weight. From this, Da Vinci derived the moment of force about an axis within a single plane. From the figure, one can distinguish what leads to the correct value of the moment of an oblique lever arm: the product of the weight and the speed with which the weight lowers rather than the product of the weight and the speed with which the extremity of the lever arm turns.
Date	1905
Source	Les Origines de la Statique (1905-1906)
Author	Pierre Duhem  (1861–1916)       Alternative names pseudonym: Ch. Clérice; Pierre Maurice Marie Duhem; Pierre Maurice Duhem Description French philosopher, physicist, university teacher, chemist, mathematician and philosopher of science Date of birth/death 10 June 1861  14 September 1916  Location of birth/death 2nd arrondissement of Paris  Cabrespine  Authority file : Q314172 VIAF: 73852904 ISNI: 0000000121393104 LCCN: n79128986 NLA: 35048295 Open Library: OL53034A WorldCat creator QS:P170,Q314172
Permission (Reusing this file)	Public domainPublic domainfalsefalse The author died in 1916, so this work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer. This work is in the public domain in the United States because it meets three requirements: it was first published outside the United States (and not published in the U.S. within 30 days), it was first published before 1 March 1989 without copyright notice or before 1964 without copyright renewal or before the source country established copyright relations with the United States, it was in the public domain in its home country (France) on the URAA date (1 January 1996). For background information, see the explanations on Non-U.S. copyrights. 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. This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse

Public domain in the United States because both published before 1923 and public domain in its home country in 1996, so not eligible for United States URAA restoration of copyright. The author died in 1916, so works by this author are also in the public domain in countries and areas where the copyright term is the author's life plus 80 years or less. 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. Its home country was France, which followed the Berne Convention (70 years beyond the life of the author) beginning before 1996.