Luminous intensity

Luminous intensity is a measure of the energy emitted by a light source in a particular direction.

The SI unit of luminous intensity is the candela (cd).

1 cd is that luminous intensity emitted by a monochromatic light source of frequency 540 × 1012 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian.


Template:SI light units

See also

it:Intensità luminosa ja:光度 nl:Lichtsterkte pl:Światłość sl:svetilnost zh:发光强度

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