Radiation Exchange between Surfaces ·The view factor Radiosity Emissive Power (E) Radiosity.J Reflective Power (Gret) Incident Radiation G PG R2 FA=AF A fraction of the total seen by AjRadiation Exchange between Surfaces • The view factor Radiosity i J Emissive Power (E) Reflective Power (Gref) Fi, j Ai = Aj Fj,i A fraction of the total seen by Aj ρ G E G i j A A i j i i i i j i j dAdA A J A R q F i j   = = → , 2 1 cos cos π θ θ