과학문화교육의 연구와 저술
A study on the working mechanism of astronomical clock in Sejong Era
Heumgyeonggaknu (欽敬閣漏, an alternative, namely “Ongnu”) is an astronomical clock was made by Jang Yeong-sil (蔣英實) in 1438 and it was designed to run on water-hammering method (水激式). 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 time. The structure of Heumgyeonggaknu is divided into three parts, mountain(Gasan), flatland and support.
The appearance of Heumgyeonggaknu's Gasan (假山, pasted-paper imitation mountain) is divided into the top of the mountain, the foot of the mountain and the flatland. The sun-movement device, Ongnyeos (玉女, jade female immortals; I) and Four Gods (四神, shaped of animal-like immortals) are equipped on near the top of the mountain.
Musas (武士, warriors) and Sasin (司辰, time manager) are equipped on the foot of the mountain. Twelve Gods (十二神), Ongnyeos(II) and Gwanin (官人) are equipped on flatland. In this study, we clearly and systematically understood the time-announcing mechanism of each puppet. Also we showed the inner structure based on working mechanism, shape of connector and control device of water wheel.
Keywords: Heumgyeonggaknu (Ongnu), Jang Yeong-sil, water-hammering method, water clock, astronomical clock, water wheel, time-announcing mechanism, time signal puppets
(영문의 논문 전체가 첨부에 있습니다. 편집 머슴)
김상혁(Kim, SangHyuk)1,4, 이용삼(Lee, Yong Sam)2,3,4, 이민수(Lee, Min Soo)2,3
1한국천문연구원, 2충북대학교천문학과, 3충북대학교천문연구소, 4 소남천문학사연구소