Haske mai haske
Hasken da tushen haske ke fitarwa a kowane lokaci naúka ana kiransa hasken haske na tushen hasken φ Wakilin, sunan naúrar: lm (lumens).
haske tsanani
Hasken haske mai haske wanda tushen haske ke fitarwa a cikin naúrar ƙaƙƙarfan kusurwar da aka ba da ita an ayyana shi azaman ƙarfin hasken hasken a waccan hanyar, wanda aka bayyana azaman I.
I= Haske mai haske a takamaiman kusurwa Ф ÷ Takamaiman kusurwa Ω (cd/㎡)
haske
Haske mai haske a kowane yanki a kowace naúra ƙaƙƙarfan kusurwar hasken a cikin takamaiman shugabanci.Wakilin L. L=I/S (cd/m2), candela/m2, wanda kuma aka sani da launin toka.
haskakawa
Hasken haske da aka samu a kowane yanki, wanda aka bayyana a cikin E. Lux (Lx)
E=d Ф/ dS(Lm/m2)
E = I/R2 (R = nisa daga tushen haske zuwa jirgin sama mai haske)