Phallo e khanyang
Leseli le hlahisoang ke mohloli oa leseli ka nako ea yuniti le bitsoa flux e khanyang ea mohloli oa leseli φ Emela, lebitso la yuniti: lm (lumens).
matla a kganya
Phallo e khanyang e hlahisoang ke mohloli oa leseli karolong e tiileng ea yuniti ea tsela e fanoeng e hlalosoa e le matla a khanya a mohloli oa leseli ntlheng eo, a hlahisoang joalo ka I.
I=Luminous flux ka lehlakoreng le itseng Ф ÷ khutlo e khethehileng Ω (cd/㎡)
kganya
The luminous flux per unit unit per unit solid angle ea lebone ka tsela e itseng.E emetsoe ke L. L=I/S (cd/m2), candela/m2, e tsejoang hape e le grayscale.
khanya
Phallo e khanyang e amohetsoeng sebakeng se seng le se seng, e hlahisoang ka E. Lux (Lx)
E=d Ф/ dS(Lm/m2)
E=I/R2 (R=bohole ho tloha mohloling oa leseli ho ea sefofaneng se bonesitsoeng)