A sundial is an instrument that indicates the time of day by means of the position, on a graduated plate or surface, of the shadow of the gnomon as it is cast by the sun. A gnomon is the raised part of a sundial that casts the shadow. (Definitions taken from dictionary.com)
Here’s a photo of the Angbuilgu Sundial taken at Deoksugung Palace, South Korea.
“Angbuilgu is a sundial that was used during the Joseon era. The name Angbuilgu means upward-looking kettle that catches the shadow of the sun.
The thirteen horizontal lines mark the 24 periods of seasonal change from the winter solstice to the summer solstice and allow the season of the year to be determined. The vertical lines are time lines. The device is aligned to face the North Star, and it is marked with pictures of animals, rather than letters, for the sake of the common people who could not read.
It was first made in 1434, but the present Angbuilgu was created in the latter half of the 17th century.
Size: 35.2 centimeters in diameter, 14 centimeters high.”
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