For example, light projected through the stained glass windows of a church-turned-nightclub transforms the meaning of those windows from religious texts to disco balls. While nothing has physically changed, it is the context of the experience that transforms one’s perception of the work.
This made me laugh, but it's true. Stain class can also be a mosaic hanging in a garden and embody an entirely different significance. I also think about how lighting in general is incredibly malleable. It can be used to highlight specific spaces within a room, set the mood by using different colors, to guide people through the space, etc.