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What is an penubra?

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Anonymous

∙ 8y ago
Updated: 8/20/2019

a spreading cone of light

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Wiki User

∙ 8y ago
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How do penumbra and umbra relate to eclipses?

The umbra is the portion of a shadow from within which none of the light source is visible. The penumbra is the portion of a shadow from within which part but not all of the light source is visible. ______________________________ "Umbra" is the area of total shadow, while "penumbra" is the area of partial shadow.


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