File:Shadow interaction demonstration.jpg

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Shadow_interaction_demonstration.jpg (489 × 260 pixels, file size: 15 KB, MIME type: image/jpeg)

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Description
English: An extremely crude diagram for a RefDesk question showing how the top shadow umbra (cyan) expands (purple) as the antumbra of the lower object approaches it. The purple segment, once a partial shadow, becomes completely dark due to the proximity of the second object.
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Author Wnt

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I, the copyright holder of this work, hereby publish it under the following licenses:
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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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current00:30, 23 August 2010Thumbnail for version as of 00:30, 23 August 2010489 × 260 (15 KB)Wnt (talk | contribs){{Information |Description={{en|1=An extremely crude diagram for a RefDesk question showing how the top shadow umbra (cyan) expands (purple) as the antumbra of the lower object approaches it. The purple segment, once a partial shadow, becomes completely

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