File:Profils.arcs.XVe.siecle.png
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...Nous atteignons les dernières expressions de la méthode adoptée pour le tracé des profils d'arcs, pendant la première moitié du XVe siècle. Soit (fig. 26) en A un arc-doubleau, composé de deux claveaux superposés. Le boudin inférieur a est tracé d'abord au moyen de deux cercles; abc étant un triangle équilatéral, c'est-à-dire les lignes ab, ac, étant à 60º; le rayon de la contre-courbe du filet eb étant égal au diamètre ae...
Public domainPublic domainfalsefalse |
This image comes from Dictionary of French Architecture from 11th to 16th Century (1856) by Eugène Viollet-le-Duc (1814-1879).
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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 was published (or registered with the U.S. Copyright Office) before January 1, 1929. | |
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
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 21:05, 26 December 2013 | 537 × 819 (22 KB) | Vieux têtard (talk | contribs) | Redressement, contraste, profondeur à 16 bits | |
18:01, 8 June 2006 | 537 × 819 (38 KB) | BuzzWikimedia (talk | contribs) | ...Nous atteignons les dernières expressions de la méthode adoptée pour le tracé des profils d'arcs, pendant la première moitié du XV<sup>e</sup> siècle. Soit (fig. 26) en A un arc-doubleau, composé de deux claveaux superposés. Le boudin inféri |
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