Illumination
The illumination of a plane at a given point is the incident flux per unit surface in this plane, at the point considered. We therefore have
where \(A_{R}\) is the illuminated surface. Illuminance is expressed in \(\text{Wm}^{-2}\).
The illumination of a plane at a given point is the incident flux per unit surface in this plane, at the point considered. We therefore have
where \(A_{R}\) is the illuminated surface. Illuminance is expressed in \(\text{Wm}^{-2}\).