A Study on the Operation Mechanism of Ongnu, the Astronomical Clock in Sejong Era

Ongnu (Jade Clepsydra; also called Heumgyeonggaknu) is a water clock was made by Jang Yeong-sil in 1438. It is not only an automatic water clock that makes the sound at every hour on the hour by striking bell, drum and gong, but also an astronomical clock that shows the sun's movement over ti...

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Bibliographic Details
Main Authors: Sang Hyuk Kim, Yong Sam Lee, Min Soo Lee
Format: Article
Language:English
Published: Korean Space Science Society (KSSS) 2011-03-01
Series:Journal of Astronomy and Space Sciences
Subjects:
Online Access:http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2011/v28n1/OJOOBS_2011_v28n1_79.pdf