File:Elicoide-conica.gif
Original file (344 × 743 pixels, file size: 711 KB, MIME type: image/gif, looped, 17 frames, 1.7 s)
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Summary
edit| Description |
L'immagine visualizza una rigata concoidica con direttrici elicoidali simmetriche. La retta di sostegno coincide con l'asse di un cono quadrico. Il movimento trasrotazionale della retta generatrice avviene su piani che hanno la stessa giacitura di unasezione retta dello stesso cono.
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| Source | Own work |
| Author | Hasanisawi |
Provenienza
editQuesta immagine proviene dal sito personale di Hasan ISAWI (docente di geometria descrittiva all'università ""la sapienza"" di Roma]]).
Autorizzazione accordata :
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:35, 23 February 2008 | | 344 × 743 (711 KB) | Hasanisawi (talk | contribs) | {{Information |Description= |Source=self-made |Date= |Author= Hasanisawi |Permission= |other_versions= }} L'immagine visualizza una rigata concoidica con direttrici elicoidali simmetriche. La retta di sostegno coincide con l'asse |
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