FAQ

What is the Intensity of light?
Intensity of light is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle. Intensity of light is usually measured using the Candela for Luminous Intensity. Note that the value of Intensity of light is always negative.
Can the Intensity of light be negative?
Yes, the Intensity of light, measured in Luminous Intensity can be negative.
What unit is used to measure Intensity of light?
Intensity of light is usually measured using the Candela[cd] for Luminous Intensity. Candle (International)[cd], Decimal Candle[cd], Hefner Candle[cd] are the few other units in which Intensity of light can be measured.
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