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Why do shadows seem to attract one another?

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In fact no matter what an object's shape is, when light is blocked by the object and forms shadow, there is a "rough outline" along the shadow. read more

When two objects (each with their own shadows and penumbrae) are moved near each other, at some point the penumbra from each object overlaps the penumbra from the other object and the combined penumbrae are nearly as dark as the normal shadow, making it appear that the two shadows are"reaching" for each other or are flowing together. read more

It would seem that all I'd need to do is create a box with a lot of partitions staggered slightly back from the one before it such that a photon meets and edge, turns a bit, meets another edge and turns some more and so on. read more

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