The types of theatre musicals is just like the types of movies. There is scary, comical, romance, family, action/adventure. There is a lot more too.
Amphitheatre Japanese theatre
White light is a mixture of light of different colors. Some mixing proportions trigger a response in our visual system that we call "white".
Yes. Laser light is special in that all the waves of electromagnetic energy are temporally and spacially coherent i.e. the waves are in step (or in phase) with each other and travel in a thin beam...
Musicals! Duhh (: