File:Ptolemaic elements.svg

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Ptolemaic_elements.svg‎ (SVG file, nominally 168 × 168 pixels, file size: 25 KB)

A simple illustration showing the basic elements of Ptolemaic astronomy. It shows a planet rotating on an epicycle which is itself rotating around a deferent inside a crystalline sphere. The center of the system is marked with an X, and the earth is slightly off of the center. Opposite the earth is the equant point, which is what the planetary deferent would actually rotate around. Distances have been exaggerated as has the simplicity for the purposes of illustration.

Created by User:Fastfission in Adobe Illustrator.

[edit] Licensing

Public domain This work has been released into the public domain by its author, Fastfission. This applies worldwide.
In some countries this may not be legally possible; if so:
Fastfission grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

If you want to credit someone, credit "Wikimedia Commons." Otherwise don't credit anyone, that's fine by me. --Fastfission 15:02, 14 April 2008 (UTC)

File history

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Date/TimeThumbnailDimensionsUserComment
current15:25, 8 November 2009Thumbnail for version as of 15:25, 8 November 2009168 × 168 (25 KB)Fastfission (update metadata)
16:23, 31 December 2005Thumbnail for version as of 16:23, 31 December 2005168 × 168 (24 KB)Fastfission (modify this a bit. remove the little arrows (not necessary, somewhat cheesy), and put the epicycle itself in its own little sphere)
19:42, 30 December 2005Thumbnail for version as of 19:42, 30 December 2005153 × 153 (28 KB)Fastfission
19:38, 30 December 2005Thumbnail for version as of 19:38, 30 December 2005153 × 153 (29 KB)Fastfission (shift the elements around a little)
19:37, 30 December 2005Thumbnail for version as of 19:37, 30 December 2005153 × 153 (29 KB)Fastfission (A simple illustration showing the three basic elements of Ptolemaic geometry. It shows a planet rotating on an epicycle which is itself rotating around a deferrent inside a crystalline sphere. The center of the system is marked with an X, and the earth is)
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This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
Width 168
Height 168
Retrieved from "http://en.wikipedia.org/wiki/File:Ptolemaic_elements.svg"
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