Definition of Candela (cd):
Metric (SI) unit of luminous intensity that measures the brightness of the light itself and not the illuminance (the amount of light falling on an object which is measured in lux). One candela represents monochromatic radiation at a frequency of 540 terahertz (THz) and radiant intensity of 1/683 watt per steradian. It replaces the older candle, standard candle, and international candle units.
The SI unit of luminous intensity. One candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 × 10¹² Hz and that has a radiant intensity in that direction of 1/683 watt per steradian.
How to use Candela (cd) in a sentence?
- SI (Système Internationale d Unites) uses seven different fundamental units, the meter, kilogram, second, ampere, kelvin, candela, and mole.
Meaning of Candela (cd) & Candela (cd) Definition