File:Bipolar coordinates.png

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Bipolar_coordinates.png (246 × 280 pixels, file size: 4 KB, MIME type: image/png)

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Summary

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Description
English: Illustration of the bipolar coordinate system. σ is the angle between the two foci and the point in question, whereas τ is the logarithm of the ratio of the distances. The corresponding σ and τ isosurfaces are shown in red and blue, respectively.
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Author user:WillowW: This image was made by me using Xfig and is licensed under the GFDL.
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I, the copyright holder of this work, hereby publish it under the following license:
GNU head 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/TimeThumbnailDimensionsUserComment
current14:34, 24 October 2006Thumbnail for version as of 14:34, 24 October 2006246 × 280 (4 KB)WillowW (talk | contribs)Updated to label the point P. Otherwise, the same as first version.
14:18, 24 October 2006Thumbnail for version as of 14:18, 24 October 2006246 × 289 (4 KB)WillowW (talk | contribs)Illustration of the bipolar coordinate system. σ is the angle between the two foci and the point in question, whereas τ is the logarithm of the ratio of the distances. The corresponding σ and τ isosurfaces are shown in red and blue, respectively. T

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