Hi, bear with me. This is a long winded question I'm aspiring scriptwriter currently in dilema concerning one of my scenes. I have a character who has to see a rainbow at a certain time in order to initiate an exchange of dialogue concerning the various myths and legends of Rainbows. Problem is he has to know that the rainbow was going to be there, therefore it can't be a freak random occurence of the weather. I've described a fountain, the centre courtyard piece between a triangle of towering glass buildings (this fountain doesn't exist. It's purely fictional). During my research I read that rainbows can occur anywhere where cascading rain droplets intersect sunlight at the correct angle and the relation to where the observer sees it from. So my question is can a structure (ie.fountain) be created, using specifically angled mirrors, that, providing the sun is shining, can create a rainbow at a specific time of the day, depending on the sun's location. I want to have a scene where a seat is positioned in front of the fountain and that every day, At the same time on the dot, providing there's sun shine, a feint rainbow is can be seen from that seat. Not being exactly blessed in the knowledge of the physics of science I have no idea if the season/time of the year effects this in any way. Another question I have is does it matter if it's a spray or cascading waterfall fountain? Would that effect the intensity of the rainbow? Any help would be greatly appreciated.