Radiance (L)
Radiance is the flux per unit area, per unit solid angle. L = dΦ / dw dA⊥. A⊥is the projected area of dA on a hypothetical surface perpendicular to w (where w is a unit vector).
Radiance is the flux per unit area, per unit solid angle. L = dΦ / dw dA⊥. A⊥is the projected area of dA on a hypothetical surface perpendicular to w (where w is a unit vector).