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The late nineteenth century also brought the systematic study of color theory, and particularly the study of how complementary colors such as red and green reinforced each other when they were placed next to each other. These studies were avidly followed by artists such as Vincent van Gogh. Describing his painting, The Night Cafe, to his brother Theo in 1888, Van Gogh wrote: "I sought to express with red and green the terrible human passions. The hall is blood red and pale yellow, with a green billiard table in the center, and four lamps of lemon yellow, with rays of orange and green. Everywhere it is a battle and antithesis of the most different reds and greens."
What year did color theory first appear?
A: unanswerable

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It was granted its Royal Charter in 1837 under King William IV. Supplemental Charters of 1887, 1909 and 1925 were replaced by a single Charter in 1971, and there have been minor amendments since then.
In what years was the Royal Institute issued supplemental charters?
A: 1887, 1909 and 1925

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Although the initial focus of the humanist scholars in the university was the discovery, exposition and insertion of ancient texts and languages into the university, and the ideas of those texts into society generally, their influence was ultimately quite progressive. The emergence of classical texts brought new ideas and led to a more creative university climate (as the notable list of scholars above attests to). A focus on knowledge coming from self, from the human, has a direct implication for new forms of scholarship and instruction, and was the foundation for what is commonly known as the humanities. This disposition toward knowledge manifested in not simply the translation and propagation of ancient texts, but also their adaptation and expansion. For instance, Vesalius was imperative for advocating the use of Galen, but he also invigorated this text with experimentation, disagreements and further research. The propagation of these texts, especially within the universities, was greatly aided by the emergence of the printing press and the beginning of the use of the vernacular, which allowed for the printing of relatively large texts at reasonable prices.
What spread the use of texts by Galen within universities?
A: the printing press

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Expansive interior light has been a feature of Gothic cathedrals since the first structure was opened. The metaphysics of light in the Middle Ages led to clerical belief in its divinity and the importance of its display in holy settings. Much of this belief was based on the writings of Pseudo-Dionysius, a sixth-century mystic whose book, The Celestial Hierarchy, was popular among monks in France. Pseudo-Dionysius held that all light, even light reflected from metals or streamed through windows, was divine. To promote such faith, the abbot in charge of the Saint-Denis church on the north edge of Paris, the Abbot Suger, encouraged architects remodeling the building to make the interior as bright as possible.
What book became popular with monks in France and had an effect on how light was used in cathedrals?
A:
The Celestial Hierarchy