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File:Equatorial sundial topview.gif

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Equatorial_sundial_topview.gif (400 × 300 pixels, file size: 2.96 MB, MIME type: image/gif, looped, 125 frames, 13 s)

Summary

Description Top view of an equatorial sundial. The hour lines are spaced equally about the circle, and the shadow of the cylindrical gnomon moves uniformly about. The height of the gnomon is 2.5 units and the outer radius of the dial is 6.0 units. This animation depicts the motion of the shadow from 3 a.m. to 9 p.m. on mid-summer's day, when the sun is at its highest declination. Sunset and sunrise occurs at 3am and 9pm on that day near the latitude 57.5°, roughly the latitude of Aberdeen or Gothenburg. Made 15 January 2008 by me using Blender.
Source Own work
Author WillowW
 
This animation was created with Blender by GIF.

Licensing

I, the copyright holder of this work, hereby publish it under the following licenses:
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.
w:en:Creative Commons
attribution
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File history

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Date/TimeThumbnailDimensionsUserComment
current11:19, 16 July 2016Thumbnail for version as of 11:19, 16 July 2016400 × 300 (2.96 MB)Erdavis7Previous version had slower framerate. Returned to 100 ms delay.
11:04, 16 July 2016Thumbnail for version as of 11:04, 16 July 2016400 × 300 (2.82 MB)Erdavis7Increased brightness and contrast. It seemed very dark before. If there was a reason for it, then revert freely.
17:51, 15 January 2008Thumbnail for version as of 17:51, 15 January 2008400 × 300 (2.96 MB)WillowW{{Information |Description=Top view of an equatorial sundial. The hour lines are spaced equally about the circle, and the shadow of the cylindrical gnomon moves uniformly about. The height of the gnomon is 2.5 units and the outer radius of the dial is 6

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