Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jass...27..161k&link_type=abstract
Journal of Astronomy and Space Sciences. Vol. 27, no. 2, 161-172
Astronomy and Astrophysics
Astronomy
Sundial, Angbu-Ilgu, Kang Family (Yun Kang, Geon Kang, Mun-Su Kang, Ik-Su Kang, Hong Kang)
Scientific paper
In this paper, we investigate the sundials made by the Kang Family of Jinju in the later period of the Joseon dynasty in terms of their characteristics, functions and the manufacturing technique. One of the characteristics of these sundials is that the value of polar height (i.e., the latitude of Seoul), the name of manufacturer, 24 seasonal subdivisions and so forth are written on the surface. In particular, polar height is expressed as 37° 39' 15'' in all 12 sundials examined in this study. To investigate the manufacturing technology in terms of astronomy, we analyze the positions of gnomon and of the lines corresponding to 24 seasonal subdivisions (season lines) and to each hour (hour lines). To verify the accuracy of the positions, we use a planar projection method. That is, we obtain 2D images of the sundials using a camera or scanner, and compare these with astronomical calculations for the positions of gnomon
Kim Sang Hyuk
Lee Kuang Wu
Lee Yong Sam
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