Speakur

Word Pronunciation & Dictionary

illumination problem

Word Rarity Rare

Frequency: Zipf frequency 3.35 in modern English

Syllables
il-lu-mi-na-tion prob-lem
IPA
27
Scrabble Score
19
Letters
6
Syllables
12
Unique Chars

Meaning

noun

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.

Etymology

From illumination + problem.

Questions

What does illumination problem mean?
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.
Where does illumination problem come from?
From illumination + problem.

How to pronounce illumination problem

  1. Open the pronunciation page — Open the Speakur entry for “illumination problem”.
  2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
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