illumination problem

名词 n.
中文释义

英文释义

名词 n.
  1. A mathematical problem, asking whether a room with mirrored walls can always be illuminated by a single-point light source, allowing for repeated reflection of light off the mirrored walls. It was solved in 1958: there are such rooms that cannot be thus illuminated.

词源

From illumination + problem.
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