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E2-22 UMBRA AND PENUMBRA 10 years 6 days ago #77

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ID Code: E2-22
Purpose: Illustrates shadow umbra and penumbra
Description: The foam ball casts a shadow of each of the two point sources in the box. The umbra is where the two shadows overlap and the penumbra is where only one source is shadowed.
Availability: Available

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Last edit: by zzfixk21.
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