The following sections of this BookRags Literature Study Guide is offprint from Gale's For Students Series: Presenting Analysis, Context, and Criticism on Commonly Studied Works: Introduction, Author Biography, Plot Summary, Characters, Themes, Style, Historical Context, Critical Overview, Criticism and Critical Essays, Media Adaptations, Topics for Further Study, Compare & Contrast, What Do I Read Next?, For Further Study, and Sources.
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The following sections, if they exist, are offprint from Beacham's Encyclopedia of Popular Fiction: "Social Concerns", "Thematic Overview", "Techniques", "Literary Precedents", "Key Questions", "Related Titles", "Adaptations", "Related Web Sites". (c)1994-2005, by Walton Beacham.
The following sections, if they exist, are offprint from Beacham's Guide to Literature for Young Adults: "About the Author", "Overview", "Setting", "Literary Qualities", "Social Sensitivity", "Topics for Discussion", "Ideas for Reports and Papers". (c)1994-2005, by Walton Beacham.
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1231-1316
Chinese astronomer, mathematician, and hydraulic engineer best known for preparing the Shoushi calendar, which is equivalent to the modern Gregorian calendar. Kublai Khan entrusted Kuo Shou-ching with the regulation of China's irrigation and waterways in 1271. He was then instructed to reform the calendar, which he completed by 1280. His efforts involved designing an observatory and sophisticated astronomical instruments that he used to observe the Sun, the 28 xiu (lunar lodges), and many unnamed stars.