"illumination problem" meaning in English

See illumination problem in All languages combined, or Wiktionary

Noun

Etymology: From illumination + problem. Etymology templates: {{root|en|ine-pro|*lewk-}}, {{root|en|ine-pro|*gʷelH-}}, {{com|en|illumination|problem}} illumination + problem Head templates: {{en-noun|?}} illumination problem
  1. (mathematics) 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. Wikipedia link: illumination problem Categories (topical): Mathematics
    Sense id: en-illumination_problem-en-noun-A8Nrgt5L Categories (other): English entries with incorrect language header, Pages with 1 entry, Pages with entries Topics: mathematics, sciences
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        "(mathematics) 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."
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This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2025-01-06 from the enwiktionary dump dated 2025-01-01 using wiktextract (f889f65 and 8fbd9e8). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

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