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abstraction > mathematical concept > unit > luminous intensity unit |
luminous intensity unit comparison table |
Subject | is an acronym for | has definition | has historical origin | has symbol | represent | has approval agency | has approval date | is an instance of | is a unit of |
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candela | Syteme Internationale | the luminous intensity in a given direction, of a source that emits monochromatic radiation of frequency 540 × 1012 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian | in 1933 it was based on the luminous emission of a blackbody at the freezing temperature of platinum (2045 K) | cd | 13th CGPM | 1967 | base SI unit | luminous intensity |
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