What%20is%20the%20symbol%20of%20luminous%20intensity%3F

Luminous intensity is a quantity for calling a light source
It is mostly applied with the approximation of a point source
It is represented by the symbol Iν, where the subscript ν denotes a photometric quantity

Written By:Garvit

Updated: November 16 2020 12:27:18 AM ET

The%20luminous%20intensity%20is%20a%20quantity%20for%20calling%20a%20light%20source.%20It%20is%20the%20luminous%20flux%20per%20unit%20solid%20angle.%20It%20is%20a%20quantity%20of%20photometry%2C%20taking%20into%20account%20the%20spectral%20response%20of%20the%20human%20eye%20%u2013%20typically%20for%20photopic%20vision%20like%20assuming%20enough%20of%20high%20light%20intensity%20%28luminance%29%20for%20color%20vision.%26nbsp%3B

It%20is%20mostly%20applied%20with%20the%20approximation%20of%20a%20point%20source%20-%20in%20distances%20which%20are%20maginificent%20to%20the%20extent%20of%20the%20source.

The%20analogous%20quantity%20in%20radiometry%20is%20the%20radiant%20intensity.%26nbsp%3B

It%20is%20independent%20of%20the%20distance%20from%20the%20light%20source%20%u2013%20in%20contrast%20to%20the%20irradiance%2C%20which%20scales%20with%20the%20inverse%20square%20of%20the%20distance%20from%20the%20light%20source.

It%20is%20represented%20by%20the%20symbol%20%3Ci%3EI%3C/i%3E%u03BD%2C%20where%20the%20subscript%20%u03BD%20denotes%20a%20photometric%20quantity%2C%20and%20its%20unit%20is%20the%20candela%2C%20an%20SI%20base%20unit%20%281%20cd%20%3D%201%20lumen/steradian%2C%20where%20the%20steradian%20is%20a%20measure%20of%20solid%20angle%29.%20An%20antiquated%20term%20for%20the%20candela%20is%20candlepower.