Journal of Astronomy and Space Sciences

The Korean Space Science Society (한국우주과학회)
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A Study for the Restoration of the Sundials in King Sejong Era

  • Lee, Yong-Sam (Department of Astronomy and Space Science, Chungbuk National University) ;
  • Kim, Sang-Hyuk (Korea Astronomy and Space Science Institute)
  • Received : 2011.05.18
  • Accepted : 2011.05.30
  • Published : 2011.06.15
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Abstract

The sundials produced in King Sejong era had the functions of accurate observation instruments and were fabricated in various forms such as Angbuilgu (hemispherical sundial). In this study, we investigated the literature, structural characteristics and principles of Hyeonjuilgu, Cheonpyeongilgu and Jeongnamilgu that were developed in Joseon to have the unique structures. Additionally, the sundials were reviewed in the perspective of technical history by comparing them with the sundials of China. For the restoration of the sundials, we identified the principle in which the light spots and shade of the sun were used, and drew the variations of the altitude and azimuth by the yearly motion of the sun on the Siban on the hemispheric and flat surfaces. Based on these results, we completed the design drawings of the three sundials and proposed the restoration models.

Keywords

Acknowledgement

Supported by : Chungbuk National University

References

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Cited by

  1. INFERENCE ON THE ARRANGEMENT AND SCALE OF THE GANUIDAE IN THE JOSEON DYNASTY vol.26, pp.3, 2011, https://doi.org/10.5303/PKAS.2011.26.3.115
  2. Scale Marking Method on the Circumference of Circle Elements for Astronomical Instruments in the Early Joseon Dynasty vol.32, pp.1, 2015, https://doi.org/10.5140/JASS.2015.32.1.63