In this paper we firstly present a study of the use of temporal coherence in radiosity algorithms. We underline the fact that this may be used even in static environments given that the behavior of a radiosity algorithm, when computing the form-factors of a surface, is the same as the behavior of an algorithm computing visibility for a sequence of view points corresponding to a linear movement. Secondly, we study the proposed solutions for dynamic environments. Finally, we propose an algorithm for dynamic environments which target is to reach a wide use of temporal coherence.