CCT
CCT yog txhais nyob rau hauv degrees Kelvin; lub teeb sov yog nyob ib ncig ntawm 2700K, txav mus rau nruab nrab dawb ntawm ib ncig ntawm 4000K, thiab kom txias dawb, ntawm 5000K lossis ntau dua.
Luminous flux
Hauv photometry, ci ntsa iab or luminous zog yog qhov ntsuas ntawm qhov pom lub zog ntawm lub teeb. Nws txawv ntawm radiant flux, qhov ntsuas ntawm tag nrho lub zog ntawm hluav taws xob hluav taws xob hluav taws xob (xws li infrared, ultraviolet, thiab pom lub teeb), nyob rau hauv lub luminous flux yog kho kom muaj kev cuam tshuam qhov sib txawv rhiab heev ntawm tib neeg lub qhov muag mus rau qhov sib txawv wavelengths ntawm lub teeb.
SI unit ntawm luminous flux yog qhov lub lumen (lm). Ib lub lumen txhais tau tias yog lub luminous flux ntawm lub teeb uas tsim los ntawm lub teeb qhov chaw uas emits ib tug candela ntawm luminous siv tshaj ib lub kaum ntse ntse ntawm ib tug steradian.
Hauv lwm lub tshuab ntawm chav nyob, luminous flux yuav muaj cov chav nyob ntawm lub zog.