candela
Isaac Kremer/ November 23, 2025/ / 0 comments
The basic SI unit of luminous intensity, equal to the luminous intensity of a source that emits monochromatic radiation of frequency 540 x 10 to the 12th hertz and that has a radiant intensity of 1/683 watt per steradian. Also called standard candle. Abbr. Cd. (Ching, 1995)