Lumens (Iv) oand/or candelas per square meter.
Luminous intensity is measured in candela, the symbol is cd.
stilb(sb)
candela--------------------------------------------The official international definition of candela (1979) is:"The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 x 10e12 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian".
The SI unit of luminous intensity (luminosity) is thecandela (CD).illuminance: pH = phot = CD·sr·cm-2 (= 104 lx)luminance: L = Lambert = CD·cm-2 (= 104 lx)luminous emission: sb = stilb = CD·cm-2 (= 104 CD·m-2)quantity of light: lumerg = CD·sr·s (= 1 lm·s)
If the bulb is switched off, then we would call it non-luminous.
Planets( Mercury, Venus, Earth, Jupiter, Saturn, Uranus, Neptune) and also Moons are Non-Luminous objects they don't emit light. The reason we see them because they reflect light from the Sun.
The symbol of candela is cd. The luminous intensity or candlepower of a light is expressed in candelas.
Length: mcurrent: Atemperature: Kmass: kgtime: sluminous intensity: cd
Luxmeter measures luminous intensity. The SI unit of luminous intensity is candela (cd).
In the SI the unit of luminous intensity is candela(cd).
Mass | Unit : Kilogram | Symbol : kg. Length | Unit : meter | Symbol : m. Time | Unit : second | Symbol : s. Temperature | Unit : kelvin | Symbol : °K. Amount | Unit : mole | Symbol : mol. Electric Current | Unit : ampere | Symbol : A. Luminous Intensity | Unit : candela | Symbol : cd.
The SI unit of luminous intensity is the candela.
candela
The SI unit of Intensity of light is CANDELA.
The SI unit for luminous intensity is candela (cd).
stilb(sb)
Lumens
A candela is the power emitted by a source of light in a set direction with a correction to account for the different sensitivity of the human eye to different wavelengths of light. One candela is defined as the luminous intensity of a light source emitting light in one direction at a frequency of 540 x 1012 hertz and has a radiant intensity in that direction of 1/683 watts per steradian.