File:Poinsot half spirals.svg
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Summary
| Description |
English: Three different Poinsot spirals, which satisfy the equation b = r cosh(θ/k) where k is a positive real number. The green, cyan and blue curves correspond to k=1.0, 3.0 and 6,0, respectively. These are half-spirals, since only positive values of θ are plotted; the negative values would give the mirror image about the x-axis (i.e., the horizontal). |
| Date | |
| Source | Own work |
| Author | WillowW |
| Other versions | en:Image:Poinsot1.PNG, another version with k=3.0. |
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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. |
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 01:42, 21 August 2008 | | 375 × 375 (30 KB) | WillowW | {{Information |Description=Improved version of GnuPlot image with Inkscape. |Source=self-made |Date=20 August 2008 |Author=WillowW |Permission= |other_versions= }} |
| 23:38, 12 August 2008 |  | 500 × 450 (24 KB) | WillowW | {{Information |Description={{en|1=Three different Poinsot spirals, which satisfy the equation ''b'' = ''r'' cosh(θ/''k''). The black, red and blue curves correspond to ''k''=1.0, 3.0 and 6,0, respectively. These are half-spirals, since only positive va |
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