International Commission on Illumination 1987. International Lighting VocabularyArchived 2010-02-27 at the Wayback Machine. Number 17.4. CIE, 4th edition. ISBN978-3-900734-07-7. By the International Lighting Vocabulary, the definition of light is: “Any radiation capable of causing a visual sensation directly.”
International Commission on Illumination 1987. International Lighting VocabularyArchived 2010-02-27 at the Wayback Machine. Number 17.4. CIE, 4th edition. ISBN978-3-900734-07-7. By the International Lighting Vocabulary, the definition of light is: “Any radiation capable of causing a visual sensation directly.”