Generally,the vitrage,or stained glass technique was used to convey an idea of other worldliness. When a person would enter the cathedral,the light would shine through the windows and illuminate the interior,causing a colourful ambient that would leave the person feeling as though they had entered another world;the world of God. The principle in the Byzantine age was the same,except it was more so to signify the god like attributes of the rulers themselves.
Diego Rodríguez de Silva y Velázquez was a Spanish painter, the leading artist in the court of King Philip IV, and one of the most important painters of the Spanish Golden Age.