Analysis on the Hour-lines of Yangcheon-cheok
We studied the hour-lines of six extant Yangcheon-cheoks in Korea. To find whether Yangcheon-cheok was used in the whole area of Korea, we calculated the length of shadows of Yangcheon-cheok on the Korean Peninsula, Nanjing and Beijing as well as Hanyang (Seoul), according to 24 solar terms. Compari...
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Veröffentlicht in: | Journal of astronomy and space sciences 2017, 34(1), , pp.55-65 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | We studied the hour-lines of six extant Yangcheon-cheoks in Korea. To find
whether Yangcheon-cheok was used in the whole area of Korea, we calculated the length of
shadows of Yangcheon-cheok on the Korean Peninsula, Nanjing and Beijing as well as
Hanyang (Seoul), according to 24 solar terms. Comparing the length of shadows with
hour-lines of those relics, we could find that Yangcheon-cheok was suitable for use at
limited times (from 9:00 to 15:00) during the year. Also, this sundial is more
appropriate for use at low latitudes than high ones. Among existing relics, that of
Seoul Museum of History made with porcelain was much more suitable to use at Hanyang and
its higher latitude. Lee’s collection was also suitable to use at Nanjing. It is certain
that Yangcheon-cheok was a portable sundial which could be used from nine to fifteen of
clock all the year around except for the winter season. |
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ISSN: | 2093-5587 2093-1409 |
DOI: | 10.5140/JASS.2017.34.1.55 |