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#1 BMAD

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Posted 18 October 2013 - 04:29 PM

A Bright Star is a sphere, not just a point, that emits light in all directions from every point on its surface. A Dark Star is an opaque sphere whose dull black surface reflects no light. Dark Stars come in all sizes. Your assignment is to get and position a few of them around a given Bright Star in such a way as will absorb all its light, thus rendering it invisible from afar in every direction. What is the minimum number of Dark Stars required to carry out this task, and why?


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#2 DeGe

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Posted 18 October 2013 - 05:09 PM

Spoiler for Possibility


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#3 BMAD

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Posted 18 October 2013 - 05:16 PM

Spoiler for Possibility

Will that work in three dimensions?


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#4 DeGe

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Posted 18 October 2013 - 05:20 PM

 

Spoiler for Possibility

Will that work in three dimensions?

Good point.

Spoiler for For 3D

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#5 BMAD

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Posted 18 October 2013 - 05:39 PM

 

 

Spoiler for Possibility

Will that work in three dimensions?

Good point.

Spoiler for For 3D

 

Is that the least amount?


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#6 jordge

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Posted 18 October 2013 - 06:13 PM

Spoiler for I think the answer is.

 

(Although the scale of the problem makes my head hurt)


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