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Astronomical Instruments of the Chosfln Dynasty
Observation of Celestial Phenomena
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According ancient armillary clock armillary sphere bronze mirrors Bureau of Astronomy calendar cast celadon celestial century B.C. ch'dk ch'o Ch'oe ch'ok ch'on chdm chdng China Chinese chiriji Chong Choson Dynasty clepsydra copper culture diameter double hour early Choson Dynasty earth fifteenth century firearms geography geomancy Han'guk history of Korean Hong Ibid instruments invented iron Japan Japanese Jeon Kim Yuk King Munjong King Sejong Koguryo Korean bronze Korean science Kory6 Dynasty Korydsa Koryo kwahaksa kydng manufacturing map of Korea measurement method Ming Munhdn pigo Museum observations observatory officials P'alto Paekche Palace pektong period porcelain pottery printing produced Province rain gauge rainfall reign of King rotation Samguk sagi scholars Sejong sillok Seoul Silla Soun'gwan stars stone striking clock sundial Sung sungnam T'ang t'ien Taedong technique theory Three Kingdoms tombs Tongguk yoji traditional treatise turtle ship Unified Silla vessels world map Yuan