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Funnel.png (640 × 459 pixels, file size: 12 KB, MIME type: image/png)
An image from the Permafacture Institute's paper on the design of solar funnels.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:00, 17 December 2009 | | 640 × 459 (12 KB) | Permafacture (talk | contribs) | An image from the Permafacture Institute's paper on the design of solar funnels. |
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