File:SeasonDuration.png
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Original file (948 × 338 pixels, file size: 29 KB, MIME type: image/png)
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This is a file from the Wikimedia Commons. The description on its description page there is shown below.
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Summary
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English: The durations of the seasons. The season lengths are different because Orbital mechanics require that the length of the seasons be proportional to the areas of the seasonal quadrants, so when the eccentricity is extreme, the seasons on the far side of the orbit can be substantially longer in duration. Today, when fall and winter occur at closest approach, the earth is moving at its maximum velocity and therefore fall and winter are slightly shorter than spring and summer. Today, summer is 4.66 days longer than winter and spring is 2.9 days longer than fall. |
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Made from data found on the US Naval Observatory site. The source web page is: https://sites.google.com/site/bensonfamilyhomepage/Home/ice-age-and-global-warming |
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| Author | GregBenson at English Wikipedia | |||
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Licensing
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The depicted text is ineligible for copyright and therefore in the public domain because it is not a “literary work” or other protected type in sense of the local copyright law. Facts, data, and unoriginal information which is common property without sufficiently creative authorship in a general typeface or basic handwriting, and simple geometric shapes are not protected by copyright.
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File history
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 03:07, 22 July 2008 | 948 × 338 (29 KB) | 718 Bot | {{Template:BadJPEG}} == Summary == I made this chart from data found on the US Naval Observatory site. It shows the durations of the seasons. The season lengths are different because Orbital mechanics require that the length of the seasons be proportion |
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