cie

17-21-013

light, <photometric> noun

radiation within the spectral range of visible radiation

Note 1 to entry: Sometimes, the term "light" is also used in physics as a synonym of optical radiation, covering the spectral range from 100 nm to 1 mm and sometimes even covering the X‑ray spectral range. This misuse of the term "light" should be avoided.

Publication date: 2020-12
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