standard candle

Noun
  1. The basic unit of luminous intensity adopted under the Systeme International d'Unites;
    Equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2,046 degrees Kelvin (synset 113663013)
    is a type of: candlepower unit, luminous intensity unit - a measure of luminous intensity
    same as: candela, candle, cd

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